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 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
  2. 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
  3. 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
  4. 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
  5. 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
  6. 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
  7. 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
  8. 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
  9. 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
  10. 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
  11. 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
  12. 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
  13. 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
  14. OpenAI's own explanation of Work, the agent in ChatGPT for longer, multi-step research that ends in a finished deliverable. help.openai.com Guide · How Founders Use AI ChatGPT Work and Codex OpenAI Help Center In 2 answers
  15. What Suno v6 is, the licensed Warner and BMG recordings behind it, and what each plan allows. musicradar.com Article · How Founders Use AI Suno has rebuilt its AI music models from scratch with licensed music MusicRadar In 2 answers
  16. The suit against Suno v6, which matters before you put an AI track in a paid ad. musicradar.com Article · How Founders Use AI “Suno’s v6 is not a fresh start; it is the fruit of the same poisoned tree”: Universal and Sony sue AI firm over continued copyright infringement in its new model MusicRadar In 2 answers
  17. The maker's launch post: describe a screen, get a clickable prototype on your brand, then hand it to Claude Code or Canva. anthropic.com Article · How Founders Use AI Introducing Claude Design by Anthropic Labs Anthropic In 2 answers
  18. Google's own guide to Build mode: describe an app, get a web or native Android app, deploy to Cloud Run or sync to GitHub. ai.google.dev Guide · How Founders Use AI Build apps in Google AI Studio Google In 2 answers
  19. Google's own report of how often your pages appear in AI Overviews and AI Mode, by page, country and date. Free, and open to... developers.google.com Article · How Founders Use AI Introducing Search Generative AI performance reports in Search Console Google Search Central In 2 answers
  20. Google's own post on AI Max leaving beta and legacy Search features upgrading to it, updated June 2026 with the revised timeline. blog.google Article · How Founders Use AI We're upgrading Dynamic Search Ads to AI Max Google (Brandon Ervin) In 2 answers
  21. OpenAI's own post: $1 billion run rate, self-serve Ads Manager opening across India, Europe, the Middle East and North Africa,... openai.com Article · How Founders Use AI A milestone in expanding access to AI OpenAI In 2 answers
  22. ChatGPT ads arriving in India on the Free and Go tiers, with a ₹725 daily minimum for self-serve campaigns. techcrunch.com Article · How Founders Use AI OpenAI to start showing ads on ChatGPT's free and Go tiers in India TechCrunch (Ivan Mehta) In 2 answers
  23. Anthropic's data team on automating its own business questions with Claude: why accuracy is a context and definitions problem,... claude.com Article · How Founders Use AI How Anthropic enables self-service data analytics with Claude Anthropic In 2 answers
  24. Google's note that each cell Gemini fills from the web now shows its source, so you can check the values before using them. workspaceupdates.googleblog.com Article · How Founders Use AI Fill with Gemini now provides cell-level citations for web sources and supports larger requests Google Workspace Updates In 2 answers

Show the next 24

The hubs

eChai Partner Brands The partnership →