Explore · The library

Every resource founders actually use, in one library.

The essays, videos, podcasts, books and tools behind every answer across eChai's hubs, from starting up to go-to-market, D2C, founder money and AI, each with a note on why it is here.

What founders use most, ranked by how many answers lean on it.

  1. A 3x general counsel draws the exact line between AI-safe questions and lawyer-required ones. gc.ai Article · How Founders Use AI AI Legal Advice: What It Does and Where Liability Sits GC AI (Cecilia Ziniti) In 2 answers
  2. The cautionary tale: Krafton's CEO followed ChatGPT over his own legal team and lost badly. 404media.co Article · How Founders Use AI CEO Asks ChatGPT How to Void $250 Million Contract, Ignores His Lawyers, Loses Terribly in Court 404 Media In 2 answers
  3. The bar association's plain-language taxonomy of the three ways AI fabricates law. nysba.org Article · How Founders Use AI Beyond the Mirage: Beware of Generative AI and Hallucinations New York State Bar Association In 2 answers
  4. Stanford Law faculty on who is liable when AI gets the law wrong, you or the model. law.stanford.edu Podcast · How Founders Use AI AI, Liability, and Hallucinations in a Changing Tech and Law Environment Stanford Legal podcast In 2 answers
  5. Why general LLMs lack the citation, context, and privilege protections professional legal work demands. tlpodcast.com Podcast · How Founders Use AI Beyond ChatGPT: Why In-House Counsel Need Purpose Built AI (Cecilia Ziniti) Technically Legal podcast In 2 answers
  6. What general assistants do well and badly for legal work, and how lawyers check their output. gavel.io Guide · How Founders Use AI ChatGPT and Claude for lawyers: how attorneys use AI in 2026 Gavel In 2 answers
  7. Video · How Founders Use AI Working Like a Lawyer with Claude Anthropic (Mark Pike with Freshfields' Anna Gressel) In 2 answers
  8. A practitioner's honest account of where Claude's legal outputs beat ChatGPT's. attorneyatwork.com Article · How Founders Use AI Why I Switched from ChatGPT to Claude AI for Lawyers Attorney at Work In 2 answers
  9. Fresh worked dilution examples to test your own numbers against. waveup.com Guide · How Founders Use AI What Is a SAFE Note? Mechanics, Caps and Dilution Examples Waveup In 2 answers
  10. Investor-relations platform's practical build guide with stage-appropriate scoping. visible.vc Guide · How Founders Use AI Startup Data Room: What It Is, What to Include, and How to Build One Visible.vc In 2 answers
  11. Free official prompt library covering cash-flow modeling, revenue forecasting and financial reporting, a fast way to start... academy.openai.com Guide · How Founders Use AI ChatGPT for finance, use cases and prompts OpenAI Academy In 2 answers
  12. Video · How Founders Use AI How to Use Claude to Build INSANE Financial Models (2026) Nicolas Boucher (AI Finance Club) In 2 answers
  13. Video · How Founders Use AI Master Claude for Excel in 10 Minutes: Financial Modeling Ali H. Salem In 2 answers
  14. Video · How Founders Use AI AI as Your New Strategic Thought Partner, Jeremy Utley (Stanford) Jeremy Utley on Proof of Work: Applied AI Case Studies In 2 answers
  15. The clearest judgment guide on when leaning on AI for decisions helps and when it quietly hurts, essential calibration before... oneusefulthing.org Article · How Founders Use AI 15 Times to Use AI, and 5 Not To Ethan Mollick (One Useful Thing) In 2 answers
  16. Video · How Founders Use AI "Dumbest idea I've heard" to $100M ARR: Inside the rise of Gamma | Grant Lee Lenny's Podcast In 2 answers
  17. The vulnerability stats behind the anecdotes. web.archive.org Article · How Founders Use AI Vibe coding security risks: why 53% of AI code has security holes Autonoma In 2 answers
  18. Primary source on the consistency features that make Runway usable for real brand work. runway.com Article · How Founders Use AI Runway Gen-4: AI video generation with world consistency Runway In 2 answers
  19. The strongest counter-argument: her data shows AI ads underperforming real creators. runneth.com Article · How Founders Use AI Savannah Sanchez, The Social Savannah (Motion expert profile) Motion In 2 answers
  20. An agent that reads your live app's logs, finds the cause of a failure, tests a fix and tells you what changed. blog.replit.com Article · How Founders Use AI Replit Monitoring Agent: Your very own software engineering team Replit In 2 answers
  21. Lovable's growth tools, which write a growth plan and carry it out across Google Search, YouTube, Maps, Ads, Facebook and... lovable.dev Article · How Founders Use AI From building your app to growing it: Lovable now helps you find customers Lovable In 2 answers
  22. OpenAI's docs for the managed route: it runs sessions, orchestration, context compaction and a sandbox while you supply the tools. developers.openai.com Guide · How Founders Use AI Agents API overview OpenAI In 2 answers
  23. OpenAI's endpoint for probability, choice and score answers on GPT-6 Luna, about 10x faster than the Responses API, for routing... developers.openai.com Guide · How Founders Use AI Decisions API guide OpenAI In 2 answers
  24. A clear, sceptical explainer of decision models: why answering with a choice instead of text is fast and cheap, and where... seangoedecke.com Article · How Founders Use AI Jev means structured output is interesting again Sean Goedecke In 2 answers

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The hubs

Starting Up Find an idea, validate it, build, and land your first customers. 1327 questions GTM Go-to-market, from breaking in to how the best teams do it. 379 questions D2C Building a direct-to-consumer brand, India-first. 512 questions Wealth Paying yourself, ESOPs, secondaries, and de-risking founder wealth. 165 questions How Founders Use AI How founders actually put AI to work, mapped topic by topic. 360 questions Glossary Plain-language definitions of the startup and VC terms you'll hit. 425 terms
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