# Startup Super School

> The startup world encyclopedia. Definitions, guides, frameworks, and articles for founders, operators, and builders.

## About

Startup Super School is a free, structured learning resource covering every dimension of building a startup.
It is organized into four content types (Glossary, Guides, Concepts, Articles) and six curriculum tracks
(Foundations, Product & Validation, Finance & Metrics, Fundraising, Growth & Go-to-Market, Team & Culture).

- Site: https://www.startupsuperschool.com
- Curriculum: https://www.startupsuperschool.com/curriculum
- Glossary: https://www.startupsuperschool.com/glossary (98 terms)
- Guides: https://www.startupsuperschool.com/guides (50 guides)
- Concepts: https://www.startupsuperschool.com/concepts (36 frameworks)
- Articles: https://www.startupsuperschool.com/articles (44 articles)
- RSS feed: https://www.startupsuperschool.com/rss.xml

## Guides (50)

- [AI for Customer Support](https://www.startupsuperschool.com/guides/ai-for-customer-support): How to build an AI-powered customer support system that deflects 60-80% of tickets while keeping CSAT high.
- [Claude Code for Startups](https://www.startupsuperschool.com/guides/claude-code-for-startups): How to use Claude Code to ship faster as a startup founder or small engineering team - from setup to team workflows.
- [How to Build an AI Startup](https://www.startupsuperschool.com/guides/how-to-build-ai-startup): A practical guide to building AI-native companies: from defining your AI edge to raising capital and scaling your model stack.
- [How to Build a RAG Pipeline](https://www.startupsuperschool.com/guides/how-to-build-rag-pipeline): A step-by-step guide to building a Retrieval-Augmented Generation system: chunking, embeddings, vector databases, retrieval, and evaluation.
- [How to Choose the Right AI Model](https://www.startupsuperschool.com/guides/how-to-choose-ai-model): How to pick between GPT-4o, Claude 3.5, Gemini, Llama 3, and Mistral: a decision framework covering cost, context, and task performance.
- [How to Evaluate AI Tools](https://www.startupsuperschool.com/guides/how-to-evaluate-ai-tools): A framework for selecting AI tools and APIs for your startup stack: benchmarking, cost estimation, vendor risk, and running a time-boxed POC.
- [How to Reduce AI API Costs](https://www.startupsuperschool.com/guides/how-to-reduce-ai-api-costs): Six proven strategies to cut LLM API spending without sacrificing product quality - from caching to model tiering to open-source alternatives.
- [Validate Your AI Startup Idea](https://www.startupsuperschool.com/guides/how-to-validate-ai-startup-idea): How to validate an AI startup idea before building: test AI necessity, find the pain, prototype fast, measure willingness to pay, and plan data acquisition.
- [OpenClaw for Startup Workflows](https://www.startupsuperschool.com/guides/openclaw-startup-workflows): How to use OpenClaw - the open-source local-first AI agent platform - to automate repetitive startup workflows across Slack, WhatsApp, and more.
- [How to Build a Cash Flow Forecast](https://www.startupsuperschool.com/guides/cash-flow-forecast): Build a 12-month cash flow forecast from scratch: direct method, inflows, outflows, runway management, and common mistakes to avoid.
- [How to Reduce Churn](https://www.startupsuperschool.com/guides/reduce-churn): A 6-step guide to reducing SaaS churn: identify why users leave, fix onboarding, run proactive customer success, and win back churned users.
- [SEO for Startups](https://www.startupsuperschool.com/guides/seo-for-startups): A practical 7-step SEO guide for founders: keyword research, on-page basics, technical fixes, and link building on zero budget.
- [Sprint Planning for Startups](https://www.startupsuperschool.com/guides/sprint-planning): How to run sprint planning in a small startup team—lean, fast, and without the ceremony that makes Scrum feel like a second job.
- [How to Run Performance Reviews](https://www.startupsuperschool.com/guides/startup-performance-reviews): A practical guide to running quarterly performance reviews at an early-stage startup—without the overhead that makes traditional annual reviews useless.
- [How to Build a Hiring Process](https://www.startupsuperschool.com/guides/structured-hiring-process): A step-by-step guide to building a repeatable, structured hiring process—from job spec to signed offer—that reduces bias and bad hires.
- [How to Write a PRD](https://www.startupsuperschool.com/guides/write-a-prd): Learn how to write a Product Requirements Document that drives alignment without becoming a bureaucratic burden—with a lean template and real examples.
- [How to Build a Compensation Framework](https://www.startupsuperschool.com/guides/build-compensation-framework): Learn how to create a fair, transparent compensation framework that helps you hire, retain, and build trust across your startup team.
- [How to Budget as an Early-Stage Startup](https://www.startupsuperschool.com/guides/early-stage-budgeting): Learn how to build a practical startup budget when resources are scarce, priorities shift monthly, and the business model is still evolving.
- [How to Build an Email Marketing Funnel](https://www.startupsuperschool.com/guides/email-marketing-funnel): Learn how to build an email marketing funnel from scratch: lead magnet, welcome sequence, automation, segmentation, and metrics.
- [How to Run Paid Acquisition](https://www.startupsuperschool.com/guides/paid-acquisition): A step-by-step guide to running paid acquisition for startups: choose the right channel, set a test budget, and scale what works.
- [How to Read Your Startup's P&L](https://www.startupsuperschool.com/guides/read-your-pl): A founder's guide to understanding the profit and loss statement - what each line means, how to interpret it, and what to fix.
- [How to Run Effective 1:1s](https://www.startupsuperschool.com/guides/run-effective-one-on-ones): A step-by-step guide to running 1:1 meetings that build trust, surface blockers, and help you develop every person on your team.
- [How to Write Good User Stories](https://www.startupsuperschool.com/guides/write-user-stories): Learn how to write clear, actionable user stories using the As a / I want / So that format, with acceptance criteria and real examples for product teams.
- [Build a Startup Financial Model](https://www.startupsuperschool.com/guides/build-financial-model): How to build a startup financial model from scratch - revenue assumptions, burn rate, runway, and investor-ready outputs that hold up in due diligence.
- [Prepare Your Data Room](https://www.startupsuperschool.com/guides/prepare-data-room): How to build an investor data room that passes due diligence - the exact documents, folder structure, and red flags to fix before investors ask.
- [How to Set Company OKRs That Actually Work](https://www.startupsuperschool.com/guides/set-company-okrs): A practical guide to writing and running OKRs in your startup - from setting the right objectives to weekly check-ins, mid-quarter reviews, and retros.
- [How to Write an Investor One-Pager](https://www.startupsuperschool.com/guides/write-investor-one-pager): Learn how to write a startup one-pager that earns investor meetings - covering the essential sections, formatting rules, and the most common mistakes to avoid.
- [How to Write a Startup Pitch Deck](https://www.startupsuperschool.com/guides/write-a-pitch-deck): A complete guide to building a startup pitch deck - what slides to include, what investors look for, and mistakes that get decks deleted immediately.
- [How to Validate Your Startup Idea](https://www.startupsuperschool.com/guides/validate-your-idea): A practical, step-by-step guide to validating your startup idea with real people before writing a single line of code - saving months of wasted effort.
- [How to Design SaaS User Onboarding](https://www.startupsuperschool.com/guides/user-onboarding): A practical guide to designing SaaS onboarding that activates users fast, reduces churn, and maximizes the ROI of every signup you earn.
- [How to Build Your First Startup Sales Funnel](https://www.startupsuperschool.com/guides/startup-sales-funnel): A step-by-step guide to building a B2B sales funnel - stages, CRM setup, metrics, discovery calls, and when to hire your first salesperson.
- [How to Set Up Analytics for Your Startup](https://www.startupsuperschool.com/guides/set-up-startup-analytics): Set up a three-layer analytics stack for your startup - product, revenue, and marketing analytics - and avoid the data traps that waste founder time.
- [How to Run Growth Experiments at Your Startup](https://www.startupsuperschool.com/guides/run-growth-experiments): Learn how to design, prioritize, and run growth experiments at your startup using the ICE framework, experiment logs, and disciplined test design.
- [How to Read (and Negotiate) a Term Sheet](https://www.startupsuperschool.com/guides/read-a-term-sheet): A founder's guide to every clause in a VC term sheet - valuation, liquidation preference, anti-dilution, board control, and what to actually negotiate.
- [How to Raise a Seed Round](https://www.startupsuperschool.com/guides/raise-seed-round): A practical, step-by-step guide to raising a seed round: what to prepare, how to run the process, and how to close.
- [How to Price Your SaaS Product](https://www.startupsuperschool.com/guides/price-your-saas): A practical guide to SaaS pricing strategy - which model to use, how to set your tiers, and the exact research process to find your right price.
- [How to Negotiate an Equity Offer at a Startup](https://www.startupsuperschool.com/guides/negotiate-equity-offer): Understand every component of a startup equity offer - and learn exactly what to negotiate, what to ask, and how to evaluate your upside.
- [How to Manage Investor Relations](https://www.startupsuperschool.com/guides/manage-investor-relations): Build a systematic investor relations practice - from monthly update emails to board meetings - that keeps investors engaged and working for you.
- [How to Build a Go-to-Market Strategy](https://www.startupsuperschool.com/guides/go-to-market-strategy): A step-by-step guide to building a GTM strategy - ICP, channels, sales motion, pricing, and metrics that drive real revenue.
- [How to Get Your First 100 Customers](https://www.startupsuperschool.com/guides/get-first-customers): Learn the 5 most effective channels for landing your first 100 customers - with practical playbooks for outreach, communities, and partnerships.
- [How to Make Your First 5 Hires](https://www.startupsuperschool.com/guides/first-hires): A practical guide to hiring your first employees - how to define the roles, run the process, set comp, and avoid the mistakes that derail early teams.
- [How to Find a Co-Founder](https://www.startupsuperschool.com/guides/find-a-cofounder): How to find, evaluate, and lock in the right co-founder - where to look, what to test for, and the conversations you must have before signing anything.
- [How to Run Customer Discovery Interviews](https://www.startupsuperschool.com/guides/customer-discovery-interviews): A step-by-step guide to running customer discovery interviews - who to recruit, what to ask, and how to turn raw conversations into actionable insight.
- [How to Do a Competitive Analysis](https://www.startupsuperschool.com/guides/competitive-analysis): Learn to find competitors, compare them across key dimensions, and turn competitive intel into a differentiation narrative that wins deals.
- [How to Write a Cold Email to Investors](https://www.startupsuperschool.com/guides/cold-email-investors): How to write a cold email to investors that actually gets a reply - anatomy of a great VC email, subject lines, templates, and what not to do.
- [How to Close Your First Enterprise Deals](https://www.startupsuperschool.com/guides/close-enterprise-deals): A tactical guide to landing your first enterprise customers: navigating buying committees, running POCs, and closing deals that stick.
- [How to Build Your First MVP](https://www.startupsuperschool.com/guides/build-your-mvp): A practical guide to building your first MVP - how to scope it correctly, what to cut, and how to launch in a way that generates real, actionable learning.
- [How to Build a Startup Product Roadmap](https://www.startupsuperschool.com/guides/build-product-roadmap): Learn how to build a product roadmap that drives alignment without stifling adaptability - from prioritization to stakeholder communication.
- [How to Build a Content Marketing Strategy](https://www.startupsuperschool.com/guides/build-content-strategy): A practical framework for building a startup content strategy that drives compounding organic traffic, inbound leads, and category authority.
- [How to Build a Pre-Launch Waitlist](https://www.startupsuperschool.com/guides/build-a-waitlist): A step-by-step guide to building a pre-launch waitlist - the landing page, viral mechanics, traffic channels, and what to do with the list once you have it.

## Articles (44)

- [AI Startups: B2B vs B2C](https://www.startupsuperschool.com/articles/ai-b2b-vs-b2c): Should you build AI for businesses or consumers? An honest comparison of the dynamics, defensibility, and economics of B2B vs B2C AI.
- [AI Startup Fundraising](https://www.startupsuperschool.com/articles/ai-fundraising): What investors actually look for when funding AI startups in 2025-2026 - the metrics, questions, and red flags that determine who gets funded.
- [AI Regulation for Startups](https://www.startupsuperschool.com/articles/ai-regulation-for-startups): The key AI regulations founders need to know in 2025-2026 - EU AI Act, US rules, GDPR implications, and a practical compliance checklist.
- [AI Startup Defensibility](https://www.startupsuperschool.com/articles/ai-startup-defensibility): How to build sustainable competitive advantages in AI - the four real moats and how to develop them from day one.
- [AI Startup Metrics](https://www.startupsuperschool.com/articles/ai-startup-metrics): The key metrics founders should track for AI products - from AI-specific signals to standard SaaS metrics adapted for AI economics.
- [Build vs Buy AI for Startups](https://www.startupsuperschool.com/articles/build-vs-buy-ai): When to build custom AI vs buy an off-the-shelf solution - a practical framework for AI infrastructure decisions at each startup stage.
- [Claude Code vs Cursor vs Copilot](https://www.startupsuperschool.com/articles/claude-code-vs-cursor-vs-copilot): Comparing the three leading AI coding tools for startup developers - paradigm, pricing, strengths, and which to choose for your team.
- [DeepSeek for Startups](https://www.startupsuperschool.com/articles/deepseek-for-startups): How DeepSeek changes the AI cost equation - and when startups should use DeepSeek-V3 and R1 instead of OpenAI or Anthropic.
- [OpenAI vs Anthropic vs Google](https://www.startupsuperschool.com/articles/openai-vs-anthropic-vs-google): Comparing the three leading AI API providers for startup use cases - pricing, strengths, weaknesses, and when to choose each.
- [OpenClaw vs Cloud AI Agents](https://www.startupsuperschool.com/articles/openclaw-vs-cloud-ai-agents): When OpenClaw's local-first approach beats cloud AI agent platforms - a practical comparison of privacy, cost, and control tradeoffs.
- [Qwen vs GPT for Startups](https://www.startupsuperschool.com/articles/qwen-vs-gpt-for-startups): When Alibaba's Qwen is a viable alternative to GPT for your startup - performance, pricing, licensing, and use cases compared.
- [The Real Cost of an AI Startup](https://www.startupsuperschool.com/articles/real-cost-of-ai-startup): A clear-eyed breakdown of AI startup costs - infrastructure, inference, people, and what unit economics actually look like at different revenue stages.
- [Why AI Wrappers Fail](https://www.startupsuperschool.com/articles/why-ai-wrappers-fail): Most AI wrapper startups fail within 18 months. Here's the structural reason - and the few ways to build defensibility on top of a foundation model.
- [Retention vs. Acquisition](https://www.startupsuperschool.com/articles/retention-vs-acquisition): Retaining customers costs 5-7x less than acquiring new ones. Learn when to prioritize each, how to measure both, and the leaky bucket trap to avoid.
- [Equity for Early Employees Explained](https://www.startupsuperschool.com/articles/equity-for-early-employees): How to structure stock option grants for early hires - covering grant sizes, vesting, strike prices, and how to communicate equity fairly.
- [Organic vs. Paid Growth: When to Use Each](https://www.startupsuperschool.com/articles/organic-vs-paid-growth): A clear framework for choosing between organic and paid growth: when to start with SEO and content, and when to layer in paid ads.
- [Revenue, Profit, and Cash Flow Explained](https://www.startupsuperschool.com/articles/revenue-profit-cash-flow): Most founders confuse revenue, profit, and cash flow. Here is what each means, why they differ, and why getting this wrong can kill your startup.
- [The Down Round Playbook](https://www.startupsuperschool.com/articles/down-round-playbook): A down round isn't the end. Here's how to navigate a valuation cut - managing dilution, investor relations, and team morale without losing the company.
- [Startup KPIs by Stage](https://www.startupsuperschool.com/articles/startup-kpis-by-stage): The metrics that matter change as your startup grows. The KPI framework founders should use from pre-seed to Series B, with real benchmarks at each stage.
- [Startup Exit Strategies Explained](https://www.startupsuperschool.com/articles/startup-exit-strategies): A complete guide to startup exit strategies - how acquisitions, IPOs, and secondaries work, and what founders need to know before planning an exit.
- [What Is Venture Capital?](https://www.startupsuperschool.com/articles/what-is-venture-capital): How venture capital works - VC fund structure, what investors look for, fund economics, dilution, and whether VC is the right path for your startup.
- [The Stages of Startup Growth](https://www.startupsuperschool.com/articles/startup-growth-stages): The five stages of startup growth explained - from ideation to scale - with key milestones, exit criteria, and common failure modes for each phase.
- [Why Most Startups Fail and What to Do](https://www.startupsuperschool.com/articles/why-startups-fail): 90% of startups fail. The data reveals it's rarely bad luck - it's specific, avoidable mistakes most founders repeat.
- [Why Product-Market Fit Matters](https://www.startupsuperschool.com/articles/why-pmf-matters): Before scaling, only one thing matters: product-market fit. Here's why it's the central challenge of early-stage startups and what it actually takes to find it.
- [What VCs Look for in a Startup](https://www.startupsuperschool.com/articles/what-vcs-look-for): VCs say they back great teams in big markets. The reality is more specific - and more useful. Here's the actual framework seed investors use to decide.
- [What Is a Startup? A Complete Definition](https://www.startupsuperschool.com/articles/what-is-a-startup): Startups are designed to search for a repeatable, scalable business model under extreme uncertainty - they are not just small versions of large companies.
- [The Startup Fundraising Process](https://www.startupsuperschool.com/articles/the-fundraising-process): The fundraising process is opaque by design. This article maps every phase - from prep to close - so you can run it like an operator.
- [Startup vs. Small Business: Key Differences](https://www.startupsuperschool.com/articles/startup-vs-small-business): A startup and a small business are fundamentally different organizations with different goals, capital, and exit logic. Here's the real difference.
- [How to Think About Pricing as a Startup Founder](https://www.startupsuperschool.com/articles/startup-pricing): Pricing is the fastest revenue lever in your business - no new customers required. Here's how to research, set, and raise prices with confidence.
- [Startup Legal Basics for Founders](https://www.startupsuperschool.com/articles/startup-legal-basics): Four legal decisions - incorporation, co-founder equity, IP assignment, and the 83(b) election - can make or break your company. Get them right early.
- [Startup Equity Explained](https://www.startupsuperschool.com/articles/startup-equity-explained): Equity is ownership - but most founders and employees can't do the math. Here's exactly how startup equity works, dilutes, and pays out.
- [How Startup Culture Gets Built](https://www.startupsuperschool.com/articles/startup-culture): Culture isn't ping-pong tables - it's what behaviors get rewarded and punished. Here's how founders actually build it.
- [The 10 SaaS Metrics Every Founder Should Track](https://www.startupsuperschool.com/articles/saas-metrics-founders): Most founders track vanity metrics. Here are the 10 SaaS metrics that actually predict growth, retention, and unit economics - with benchmarks.
- [The Rise of Micro-SaaS](https://www.startupsuperschool.com/articles/rise-of-micro-saas): Micro-SaaS proves you don't need to raise millions or hire a team to build a valuable software business. Here's why the model works.
- [How to Build and Run a Remote Startup Team](https://www.startupsuperschool.com/articles/remote-startup-team): Remote is the default for software startups in 2025. Here's how to build culture, hire globally, and run operations across time zones.
- [No-Code and Low-Code Tools for Founders in 2025](https://www.startupsuperschool.com/articles/no-code-tools-for-founders): In 2025, you can build a real MVP without hiring an engineer. Here's the honest guide to no-code tools, their real limits, and when to stop.
- [From Idea to Product-Market Fit](https://www.startupsuperschool.com/articles/idea-to-pmf): Everyone says 'find PMF' - almost no one explains how. This is the five-stage roadmap from idea to genuine product-market fit, with signals at each step.
- [The Founder Mental Health Crisis](https://www.startupsuperschool.com/articles/founder-mental-health): 50% of founders experience mental health conditions. Here's why founder burnout is structural - and the specific tools that actually help.
- [Content Marketing for Startups](https://www.startupsuperschool.com/articles/content-marketing-startups): How startups can use content marketing to build authority, drive organic traffic, and generate inbound leads without a large marketing budget.
- [Building in Public: A Growth Strategy](https://www.startupsuperschool.com/articles/building-in-public): Building in public turns your startup journey into a distribution channel. Here's how founders use radical transparency to build audience, trust, and revenue.
- [Bootstrapping vs. VC Funding](https://www.startupsuperschool.com/articles/bootstrap-vs-vc): VC or bootstrap? The answer depends on your market, your ambitions, and what you're willing to trade. Here's how to decide.
- [B2B vs. B2C: Choosing the Right Model](https://www.startupsuperschool.com/articles/b2b-vs-b2c-startup): B2B and B2C startups play completely different games. Here's how to choose the model that fits your market, your skills, and your capital plan.
- [The Anatomy of a Series A Round](https://www.startupsuperschool.com/articles/anatomy-of-series-a): What a Series A actually requires in 2024–25: the metrics, the process, the timeline, and what investors are really evaluating.
- [How AI Is Reshaping the Startup Landscape](https://www.startupsuperschool.com/articles/ai-and-startups): AI investment hit $100B+ in 2024. But the real shift isn't the money - it's what AI does to startup economics, moats, and team size.

## Glossary (98)

- [409A Valuation](https://www.startupsuperschool.com/glossary/409a-valuation): A 409A is an independent appraisal of a private company's common stock fair market value, required by U.S. tax law before issuing stock options to employees.
- [A/B Testing](https://www.startupsuperschool.com/glossary/ab-testing): A/B testing splits traffic between two variants to measure which performs better. A guide to running valid experiments with statistical significance.
- [Accounts Receivable and Payable](https://www.startupsuperschool.com/glossary/accounts-receivable): Accounts receivable is money owed to your company by customers. Accounts payable is money your company owes to vendors and suppliers.
- [Acqui-hire](https://www.startupsuperschool.com/glossary/acqui-hire): An acqui-hire is an acquisition where the buyer's primary goal is to hire the target company's team, not acquire its product.
- [Activation Rate](https://www.startupsuperschool.com/glossary/activation-rate): The % of new users who reach your product's core value moment within a defined window. The most predictive early-stage metric for long-term retention.
- [Agentic Workflow](https://www.startupsuperschool.com/glossary/agentic-workflow): A multi-step AI process where a model autonomously plans, uses tools, and executes tasks without human input at each step.
- [AI Agent](https://www.startupsuperschool.com/glossary/ai-agent): An AI agent is a system that uses an LLM to autonomously plan, make decisions, use tools, and take actions to complete a goal.
- [AI Alignment](https://www.startupsuperschool.com/glossary/ai-alignment): The challenge of ensuring AI systems behave in ways that match human intentions, values, and goals.
- [AI Hallucination](https://www.startupsuperschool.com/glossary/ai-hallucination): When an AI model generates confident-sounding but factually incorrect or fabricated information.
- [AI Wrapper](https://www.startupsuperschool.com/glossary/ai-wrapper): An AI wrapper is a product built on top of a foundation model API with a custom UI, workflow, or niche focus, rather than novel AI model development.
- [Angel Investor](https://www.startupsuperschool.com/glossary/angel-investor): An angel investor funds early-stage startups with personal capital for equity, typically before VCs participate. Many are former founders or operators.
- [Annual Contract Value (ACV)](https://www.startupsuperschool.com/glossary/acv): ACV is the average annualized revenue per customer contract, excluding one-time fees. A core B2B SaaS metric for measuring deal size and forecasting revenue.
- [ARR - Annual Recurring Revenue](https://www.startupsuperschool.com/glossary/arr): ARR is the annualized value of all active subscriptions. It is the primary top-line metric for SaaS companies and a key signal for fundraising readiness.
- [Bootstrapping](https://www.startupsuperschool.com/glossary/bootstrapping): Bootstrapping means building a startup using personal savings and revenue, without external investors. Founders retain full ownership and control.
- [Bridge Round](https://www.startupsuperschool.com/glossary/bridge-round): A bridge round is a small financing to extend a startup's runway until a larger funding round or key milestone is reached.
- [Burn Rate](https://www.startupsuperschool.com/glossary/burn-rate): Burn rate is the monthly rate at which a startup spends cash. It determines how much runway remains before the company must raise more money or turn profitable.
- [CAC - Customer Acquisition Cost](https://www.startupsuperschool.com/glossary/cac): CAC is the total cost to acquire a new customer, including all sales and marketing spend. A core unit economics metric for evaluating business viability.
- [Cap Table](https://www.startupsuperschool.com/glossary/cap-table): A cap table tracks who owns what in a startup - founders, investors, and employees - and how ownership changes across funding rounds.
- [Churn Rate](https://www.startupsuperschool.com/glossary/churn-rate): Churn rate is the percentage of customers or revenue a business loses over a given period. The most important retention metric for any subscription business.
- [Claude Code](https://www.startupsuperschool.com/glossary/claude-code): Anthropic's agentic CLI tool that gives Claude full access to your codebase, enabling multi-file edits, terminal commands, and autonomous coding tasks.
- [Cohort Analysis](https://www.startupsuperschool.com/glossary/cohort-analysis): A method of grouping users by a shared trait—typically signup date—and tracking their behavior over time to reveal retention trends.
- [Competitive Moat](https://www.startupsuperschool.com/glossary/moat): A competitive moat is a durable advantage that protects a startup's market position from competitors. Network effects and switching costs are the strongest.
- [Context Window](https://www.startupsuperschool.com/glossary/context-window): The maximum amount of text an LLM can process in a single interaction - inputs plus outputs combined.
- [Conversion Rate Optimization](https://www.startupsuperschool.com/glossary/conversion-rate-optimization): CRO is the practice of increasing the percentage of visitors who complete a desired action on your site, using testing and data.
- [Convertible Note](https://www.startupsuperschool.com/glossary/convertible-note): A convertible note is short-term startup debt with interest and a maturity date that converts into equity when a future priced round closes.
- [DeepSeek](https://www.startupsuperschool.com/glossary/deepseek): A Chinese AI lab and open-source model family that trained frontier-level LLMs at a fraction of Western competitors' reported costs.
- [Default Alive](https://www.startupsuperschool.com/glossary/default-alive): A startup is default alive if its revenue growth will reach profitability before cash runs out. Coined by Paul Graham in 2015.
- [Down Round](https://www.startupsuperschool.com/glossary/down-round): A down round occurs when a startup raises capital at a lower valuation than its previous round, triggering dilution and anti-dilution.
- [Due Diligence](https://www.startupsuperschool.com/glossary/due-diligence): The structured investigation an investor conducts before closing a deal, covering financials, legal, product, team, and market validity.
- [EBITDA](https://www.startupsuperschool.com/glossary/ebitda): EBITDA measures a company's operating profitability before interest, taxes, depreciation, and amortization - a proxy for core business cash generation.
- [Embedding](https://www.startupsuperschool.com/glossary/embedding): A numerical vector that represents the meaning of text, enabling AI to compare and retrieve semantically similar content.
- [Equity Dilution](https://www.startupsuperschool.com/glossary/equity-dilution): Equity dilution occurs when a startup issues new shares, reducing existing shareholders' ownership percentage. It happens at every funding round.
- [ESOP - Employee Stock Option Pool](https://www.startupsuperschool.com/glossary/esop): An ESOP is a reserved pool of equity set aside to grant stock options to employees, advisors, and early hires as non-cash compensation.
- [Expansion MRR](https://www.startupsuperschool.com/glossary/expansion-mrr): Expansion MRR is additional monthly recurring revenue from existing customers via upgrades or seat additions - the engine behind net negative churn in SaaS.
- [Feature Flag](https://www.startupsuperschool.com/glossary/feature-flag): A feature flag is a code switch that enables or disables a feature at runtime without deploying new code, enabling safer releases and gradual rollouts.
- [Fine-Tuning](https://www.startupsuperschool.com/glossary/fine-tuning): Fine-tuning adapts a pre-trained LLM to a specific task or domain by continuing training on a curated dataset of examples.
- [Foundation Model](https://www.startupsuperschool.com/glossary/foundation-model): A foundation model is a large AI model trained on broad data at scale, designed to be adapted to many downstream tasks rather than one specific use case.
- [Freemium](https://www.startupsuperschool.com/glossary/freemium): A model offering a permanent free tier alongside paid plans. Works when the marginal cost per free user is low and the upgrade trigger is clear and natural.
- [Good Leaver / Bad Leaver](https://www.startupsuperschool.com/glossary/good-leaver-bad-leaver): Good leaver and bad leaver clauses define how a departing employee's unvested and vested equity is treated based on why they left.
- [Gross Margin](https://www.startupsuperschool.com/glossary/gross-margin): Revenue minus Cost of Goods Sold, divided by revenue. The foundational profitability metric that drives SaaS valuation multiples and unit economics.
- [Growth Hacking](https://www.startupsuperschool.com/glossary/growth-hacking): A discipline of rapid, low-cost experimentation across product and marketing channels to find scalable, repeatable growth levers.
- [Hockey Stick Growth](https://www.startupsuperschool.com/glossary/hockey-stick): The growth curve every investor wants to see - flat for a long time, then a sudden exponential rise that resembles a hockey stick.
- [Inference](https://www.startupsuperschool.com/glossary/inference): Inference is the process of running a trained AI model on new inputs to generate predictions or outputs, as opposed to training the model on data.
- [IPO - Initial Public Offering](https://www.startupsuperschool.com/glossary/ipo): An IPO is when a private company first sells shares to the public on a stock exchange, providing liquidity and access to large capital pools.
- [J-Curve](https://www.startupsuperschool.com/glossary/j-curve): The pattern of initial losses or decline before growth - common in VC fund returns, startup unit economics, and post-investment metrics.
- [KPI](https://www.startupsuperschool.com/glossary/kpi): Key Performance Indicator - a measurable value that shows how effectively a company is achieving its key business objectives.
- [Large Language Model (LLM)](https://www.startupsuperschool.com/glossary/llm): An LLM is a deep learning model trained on massive text datasets to generate, summarize, translate, and reason with human language.
- [Letter of Intent (LOI)](https://www.startupsuperschool.com/glossary/letter-of-intent): A Letter of Intent is a non-binding document expressing intent to enter an agreement, used in B2B sales and M&A transactions.
- [Liquidation Preference](https://www.startupsuperschool.com/glossary/liquidation-preference): The right of preferred investors to be paid back before common shareholders in a liquidation or sale event, protecting downside.
- [LTV - Lifetime Value](https://www.startupsuperschool.com/glossary/ltv): LTV is the total revenue a business expects from a customer over their lifetime. The key metric for justifying acquisition spend and evaluating unit economics.
- [LTV:CAC Ratio](https://www.startupsuperschool.com/glossary/ltv-cac-ratio): The LTV:CAC ratio measures how much lifetime value you earn per dollar spent acquiring a customer. A 3:1 ratio is the SaaS benchmark.
- [MRR - Monthly Recurring Revenue](https://www.startupsuperschool.com/glossary/mrr): MRR is the total recurring subscription revenue a SaaS company earns each month. It is the operational heartbeat metric for tracking short-term growth.
- [Multimodal AI](https://www.startupsuperschool.com/glossary/multimodal-ai): AI models that can process and generate multiple types of data - text, images, audio, and video - within a single system.
- [MVP - Minimum Viable Product](https://www.startupsuperschool.com/glossary/mvp): An MVP is the simplest version of a product that allows a startup to test its core value hypothesis with real users and gather validated learning.
- [Net Promoter Score (NPS)](https://www.startupsuperschool.com/glossary/net-promoter-score): NPS measures customer loyalty on a 0–10 scale, producing a score from -100 to +100. A leading indicator of retention and referral growth for startups.
- [North Star Metric](https://www.startupsuperschool.com/glossary/north-star-metric): The North Star Metric is the single number that best captures the core value a product delivers to customers and predicts long-term sustainable growth.
- [NRR - Net Revenue Retention](https://www.startupsuperschool.com/glossary/nrr): NRR measures how much recurring revenue is retained and grown from existing customers. Above 100% means the company grows revenue without any new customers.
- [Open Source AI](https://www.startupsuperschool.com/glossary/open-source-ai): AI models whose weights, architecture, and training details are publicly released - enabling free use, modification, and self-hosting.
- [OpenClaw](https://www.startupsuperschool.com/glossary/openclaw): An open-source, local-first AI agent platform that integrates with 20+ messaging apps and runs entirely on your own devices.
- [Payback Period](https://www.startupsuperschool.com/glossary/payback-period): Months to recover the cost of acquiring a customer from that customer's gross profit contribution. Best-in-class SaaS is under 12 months.
- [Performance Improvement Plan (PIP)](https://www.startupsuperschool.com/glossary/performance-improvement-plan): A PIP is a formal document that outlines an employee's performance gaps and sets a time-bound plan to correct them before termination.
- [Pivot](https://www.startupsuperschool.com/glossary/pivot): A structured course correction that changes a startup's strategy while preserving validated learning from prior experiments.
- [Pre-Money and Post-Money Valuation](https://www.startupsuperschool.com/glossary/pre-money-valuation): Pre-money valuation is a company's value before investment. Post-money adds the investment amount. Both determine investor ownership.
- [Pre-Seed Round](https://www.startupsuperschool.com/glossary/pre-seed): A pre-seed round is the earliest startup funding stage, covering idea to prototype. Check sizes range from $100K to $1M from angels and micro-VCs.
- [Pro-Rata Rights](https://www.startupsuperschool.com/glossary/pro-rata-rights): The right of an investor to participate in future funding rounds to maintain their ownership percentage in the company.
- [Product-Led Growth (PLG)](https://www.startupsuperschool.com/glossary/product-led-growth): Product-led growth is a go-to-market strategy where the product itself drives user acquisition, conversion, and retention without a traditional sales team.
- [Product-Market Fit](https://www.startupsuperschool.com/glossary/product-market-fit): Product-market fit is the degree to which a product satisfies strong market demand - when a startup finds an audience that genuinely needs what it has built.
- [Prompt Engineering](https://www.startupsuperschool.com/glossary/prompt-engineering): Prompt engineering is the practice of crafting LLM inputs to reliably produce accurate, useful, and correctly formatted outputs for a given task.
- [Qwen](https://www.startupsuperschool.com/glossary/qwen): Alibaba's open-source large language model family - multilingual, high-performing, and available in sizes from 0.5B to 72B parameters.
- [Referral Program](https://www.startupsuperschool.com/glossary/referral-program): A referral program rewards existing users for bringing in new customers. Learn how double-sided incentives, viral coefficients, and real examples work.
- [Retrieval-Augmented Generation (RAG)](https://www.startupsuperschool.com/glossary/rag): RAG is an AI architecture that combines a retrieval system with an LLM, giving the model access to external knowledge at query time.
- [Revenue-Based Financing](https://www.startupsuperschool.com/glossary/revenue-based-financing): Revenue-based financing gives startups capital in exchange for a percentage of future revenue, with no equity dilution and no fixed monthly payments.
- [Rule of 40](https://www.startupsuperschool.com/glossary/rule-of-40): Growth rate % plus EBITDA margin % must equal or exceed 40. The single metric VCs use to balance SaaS growth against profitability efficiency.
- [Runway](https://www.startupsuperschool.com/glossary/runway): Runway is how many months a startup can operate before running out of cash. It defines the time to reach the next milestone or close the next funding round.
- [SAFE - Simple Agreement for Future Equity](https://www.startupsuperschool.com/glossary/safe): A SAFE lets investors fund startups in exchange for future equity, with no interest rate or maturity date. Created by Y Combinator in 2013.
- [Sales-Led Growth (SLG)](https://www.startupsuperschool.com/glossary/sales-led-growth): A growth model where the sales team drives acquisition and conversion - the dominant motion for high-ACV B2B products and complex enterprise deals.
- [Seed Round](https://www.startupsuperschool.com/glossary/seed-round): A seed round is a startup's first institutional funding, used to validate the product, build the core team, and reach the traction needed for a Series A.
- [Series A](https://www.startupsuperschool.com/glossary/series-a): A Series A is the first major priced VC round, raised after a startup shows product-market fit and consistent growth. It funds scaling the go-to-market engine.
- [Series B Round](https://www.startupsuperschool.com/glossary/series-b): Series B is a growth-stage VC round that funds scaling a proven business. Typically requires $8–15M ARR, 80%+ YoY growth, and NRR above 110%.
- [Series C](https://www.startupsuperschool.com/glossary/series-c): A Series C is a later-stage funding round for startups with proven revenue, used to scale into new markets, acquire competitors, or prepare for an IPO.
- [Stock Options](https://www.startupsuperschool.com/glossary/stock-options): Stock options give employees the right to buy company shares at a fixed strike price. ISOs and NSOs are the two main types used by startups.
- [Synthetic Data](https://www.startupsuperschool.com/glossary/synthetic-data): Artificially generated data that mimics real data - used to train, test, and fine-tune AI models when real data is scarce or private.
- [TAM, SAM, and SOM](https://www.startupsuperschool.com/glossary/tam-sam-som): TAM, SAM, and SOM are the three market sizing metrics founders use to quantify opportunity and show investors the realistic scale of their startup.
- [Technical Debt](https://www.startupsuperschool.com/glossary/technical-debt): The implied cost of future rework created when a team chooses a faster, easier solution today instead of a better long-term approach.
- [Term Sheet](https://www.startupsuperschool.com/glossary/term-sheet): A term sheet is a non-binding document outlining the key terms of a VC investment deal before formal legal agreements are drafted.
- [Token (AI)](https://www.startupsuperschool.com/glossary/token): A token is the basic unit of text an LLM processes - roughly 3–4 characters or 0.75 words - used to measure input length, output length, and API cost.
- [Traction](https://www.startupsuperschool.com/glossary/traction): Traction is quantifiable evidence that a startup is gaining real customers and momentum - the key signal investors use to gauge product-market fit.
- [Unicorn](https://www.startupsuperschool.com/glossary/unicorn): A unicorn is a privately held startup valued at $1 billion or more. The term was coined by VC Aileen Lee in 2013 to describe this rare class of company.
- [Unit Economics](https://www.startupsuperschool.com/glossary/unit-economics): The direct revenues and costs associated with a single unit of a business, used to determine per-unit profitability and scalability.
- [Vector Database](https://www.startupsuperschool.com/glossary/vector-database): A database optimized for storing and searching vector embeddings - the backbone of AI-powered search and RAG systems.
- [Vertical AI](https://www.startupsuperschool.com/glossary/vertical-ai): Vertical AI is an AI product built for a specific industry or workflow, combining foundation model capabilities with deep domain expertise and proprietary data.
- [Vesting](https://www.startupsuperschool.com/glossary/vesting): Equity vesting is how founders and employees earn their shares over time, ensuring long-term alignment between the team and the company's success.
- [Vesting Cliff](https://www.startupsuperschool.com/glossary/vesting-cliff): A vesting cliff is a threshold period - typically one year - before which no equity vests, protecting companies from early team departures.
- [Viral Coefficient](https://www.startupsuperschool.com/glossary/viral-coefficient): Also called K-factor: the average number of new users each existing user generates. K above 1 means exponential viral growth; below 1 is partial amplification.
- [Working Capital](https://www.startupsuperschool.com/glossary/working-capital): Working capital = current assets minus current liabilities. It measures a company's short-term liquidity and ability to fund day-to-day operations.
- [XaaS](https://www.startupsuperschool.com/glossary/xaas): Everything as a Service - the delivery model where any product or capability is offered via subscription over the internet instead of as a one-time purchase.
- [Y Combinator](https://www.startupsuperschool.com/glossary/y-combinator): The world's most influential startup accelerator - launched Airbnb, Stripe, Dropbox, and 4,000+ companies since 2005. Known as YC.
- [Zero-Shot Learning](https://www.startupsuperschool.com/glossary/zero-shot-learning): An AI model's ability to perform a task it was never explicitly trained on, guided only by a natural language description.

## Concepts & Frameworks (36)

- [Agile Development for Startups](https://www.startupsuperschool.com/concepts/agile-for-startups): An iterative software development approach built on the 2001 Agile Manifesto, favoring working software over rigid planning.
- [AI Go-to-Market Strategy](https://www.startupsuperschool.com/concepts/ai-go-to-market): How AI startups should approach distribution, pricing, and sales - and why AI GTM differs fundamentally from traditional SaaS.
- [AI Moat](https://www.startupsuperschool.com/concepts/ai-moat): The competitive advantages that make an AI startup defensible - and why model access alone is never one of them.
- [AI Product-Market Fit](https://www.startupsuperschool.com/concepts/ai-product-market-fit): How product-market fit signals differ for AI products - and why the awe of early demos often masks the absence of real retention.
- [AI-First Product Design](https://www.startupsuperschool.com/concepts/ai-first-product): A design philosophy that puts AI at the center of the product experience - and the principles that make AI-first products trustworthy and reliable.
- [AI-Native Startup](https://www.startupsuperschool.com/concepts/ai-native-startup): A startup built from the ground up with AI as the core product architecture - not a traditional product with AI features added on top.
- [Ansoff Matrix](https://www.startupsuperschool.com/concepts/ansoff-matrix): The Ansoff Matrix is a strategic framework that maps four growth strategies based on whether you sell existing or new products to existing or new markets.
- [Blue Ocean Strategy](https://www.startupsuperschool.com/concepts/blue-ocean-strategy): Blue Ocean Strategy is a framework for creating uncontested market space by making competition irrelevant through value innovation rather than beating rivals.
- [Business Model Canvas](https://www.startupsuperschool.com/concepts/business-model-canvas): A one-page visual template that maps how a company creates, delivers, and captures value across nine building blocks.
- [Category Creation](https://www.startupsuperschool.com/concepts/category-creation): A go-to-market strategy where a company deliberately defines and names a new market category rather than competing inside an existing one.
- [Community-Led Growth](https://www.startupsuperschool.com/concepts/community-led-growth): Community-led growth uses an engaged user community as the primary acquisition and retention flywheel. Learn the CLG model and when it works.
- [Crossing the Chasm](https://www.startupsuperschool.com/concepts/crossing-the-chasm): Crossing the Chasm explains why most tech startups stall between early adopters and mainstream customers, and how to bridge that gap strategically.
- [Customer Development](https://www.startupsuperschool.com/concepts/customer-development): Steve Blank's framework for validating startup assumptions through direct customer contact before and during product development.
- [Design Thinking](https://www.startupsuperschool.com/concepts/design-thinking): A human-centered, iterative problem-solving process with five stages: Empathize, Define, Ideate, Prototype, and Test.
- [Disruptive Innovation](https://www.startupsuperschool.com/concepts/disruptive-innovation): Disruptive innovation explains how smaller companies unseat incumbents by targeting overlooked segments with simpler products, then improving to dominate.
- [Dual-Track Agile](https://www.startupsuperschool.com/concepts/dual-track-agile): Dual-Track Agile runs product discovery and delivery in parallel, ensuring teams validate ideas before building and never run out of high-confidence work.
- [First Principles Thinking](https://www.startupsuperschool.com/concepts/first-principles-thinking): A reasoning method that breaks problems down to fundamental truths and rebuilds from scratch - avoiding assumptions inherited from analogy.
- [Growth Loops](https://www.startupsuperschool.com/concepts/growth-loops): Growth loops are self-reinforcing systems where each cycle's output becomes the next cycle's input, generating compounding rather than linear growth.
- [Human-in-the-Loop](https://www.startupsuperschool.com/concepts/human-in-the-loop): A design pattern where humans review or approve AI decisions at critical points - balancing automation benefits with accuracy and accountability.
- [Innovation Accounting](https://www.startupsuperschool.com/concepts/innovation-accounting): Eric Ries' framework for measuring startup progress using leading indicators when traditional revenue metrics are too early to be meaningful.
- [Jobs to Be Done](https://www.startupsuperschool.com/concepts/jobs-to-be-done): Jobs to Be Done (JTBD) explains why people choose products. Customers don't buy features - they hire products to make progress in a specific circumstance.
- [Kano Model](https://www.startupsuperschool.com/concepts/kano-model): A framework for categorizing product features by how they affect customer satisfaction - from basic must-haves to unexpected delighters.
- [Minimum Loveable Product (MLP)](https://www.startupsuperschool.com/concepts/minimum-loveable-product): An MLP is the minimum version of a product a user could genuinely love - not just tolerate - balancing learning speed with first impressions.
- [Network Effects](https://www.startupsuperschool.com/concepts/network-effects): Network effects occur when a product becomes more valuable as more people use it, creating compounding growth and a defensible competitive moat.
- [OKRs - Objectives and Key Results](https://www.startupsuperschool.com/concepts/okrs): OKRs (Objectives and Key Results) are a goal-setting framework that aligns teams around ambitious, measurable outcomes on a quarterly or annual cycle.
- [Pirate Metrics (AARRR Framework)](https://www.startupsuperschool.com/concepts/pirate-metrics): The AARRR framework breaks startup growth into five measurable stages: Acquisition, Activation, Retention, Revenue, and Referral.
- [Porter's Five Forces](https://www.startupsuperschool.com/concepts/porter-five-forces): Porter's Five Forces is a framework for analyzing competitive intensity in any industry across five structural forces that shape profitability.
- [Radical Candor](https://www.startupsuperschool.com/concepts/radical-candor): Radical Candor is Kim Scott's management framework that combines caring personally for people with challenging them directly and honestly.
- [RICE Framework](https://www.startupsuperschool.com/concepts/rice-framework): A scoring model for product prioritization using four variables: Reach, Impact, Confidence, and Effort.
- [Situational Leadership](https://www.startupsuperschool.com/concepts/situational-leadership): Situational Leadership teaches managers to adapt their style - directing, coaching, supporting, or delegating - based on each employee's needs.
- [Technology Adoption Lifecycle](https://www.startupsuperschool.com/concepts/technology-adoption-lifecycle): The Technology Adoption Lifecycle describes how new technologies spread through a market across five adopter segments, from innovators to laggards.
- [The AI Stack](https://www.startupsuperschool.com/concepts/the-ai-stack): The layered architecture of modern AI systems - from compute and foundation models to applications - and where startups should focus.
- [The Flywheel Effect](https://www.startupsuperschool.com/concepts/flywheel-effect): The flywheel effect describes how consistent momentum across linked business activities creates compounding growth with no single breakthrough moment.
- [The Lean Startup](https://www.startupsuperschool.com/concepts/lean-startup): The Lean Startup is a methodology for building products under extreme uncertainty, centered on validated learning and the Build-Measure-Learn feedback loop.
- [Two-Sided Marketplace](https://www.startupsuperschool.com/concepts/two-sided-marketplace): A two-sided marketplace connects two distinct user groups who each provide value to the other, powered by cross-side network effects.
- [Value Proposition Canvas](https://www.startupsuperschool.com/concepts/value-proposition-canvas): A two-sided tool that maps your product's features to real customer jobs, pains, and gains - ensuring you build what customers actually need.