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. Video · How Founders Use AI how to validate startup ideas in 24 hours w/o code YouTube creator (no-code)
  2. Video · How Founders Use AI Rapidly test and validate any startup idea with the 2-day Foundation Sprint Jake Knapp & John Zeratsky
  3. Video · How Founders Use AI How to Validate Your Startup Idea for $50 (Same Method That Built a $100M Brand) YouTube creator (DTC founder)
  4. Video · How Founders Use AI How to Validate Your Startup Idea Using AI Tools YouTube creator (startup tools)
  5. YC's idea evaluation lens keeps AI-generated validation honest about what actually predicts success. ycombinator.com Guide · How Founders Use AI How to Get Startup Ideas Y Combinator (Jared Friedman)
  6. A widely shared operator's thread on pairing AI with community signals to validate before building. x.com Thread · How Founders Use AI How to generate and validate startup ideas in 2024 (with AI) Greg Isenberg
  7. Copy-paste prompts covering idea stress-testing, customer definition, and early market checks. liveplan.com Guide · How Founders Use AI 17 ChatGPT Prompts for Starting a Business LivePlan
  8. Short, credible prompt set for generating and pressure-testing ideas before deeper validation. forbes.com Article · How Founders Use AI 5 ChatGPT Prompts To Help You Come Up With Startup Business Ideas Forbes (AllBusiness)
  9. Prompts engineered to make the model argue against your idea, the fastest antidote to AI flattery. ideafloat.com Guide · How Founders Use AI Validate Any Business Idea With ChatGPT: 12 Prompts That Don't Suck IdeaFloat
  10. A current end-to-end workflow: assumptions, search signals, complaints, landing page, outreach, in two days. spectrumailab.com Guide · How Founders Use AI How to Validate a Startup Idea With AI Before You Build Anything Spectrum AI Lab
  11. Includes ready templates so the 48-hour test starts immediately instead of with a blank page. digitalapplied.com Guide · How Founders Use AI AI Business Validation: Test Any Idea in 48 Hours Digital Applied
  12. Seven pre-build validation methods you can execute with AI assistance in days, not weeks. lemonpage.ai Article · How Founders Use AI 7 Ways to Validate a Product Idea Without Building an MVP LemonPage AI
  13. Explains when a smoke test is the right instrument and how to read its results without fooling yourself. painonsocial.com Guide · How Founders Use AI Smoke Tests: A Complete Guide for Startup Founders PainOnSocial
  14. Video · How Founders Use AI How to use AI to do quick competitive analysis YouTube creator (product marketing)
  15. Video · How Founders Use AI How to use AI for Competitor Analysis in Product Marketing (in 5 mins) YouTube creator (product marketing)
  16. Video · How Founders Use AI Create a McKinsey-Level Competitive Analysis with AI! YouTube creator (AI for business)
  17. Video · How Founders Use AI Build an AI Competitor Analysis Agent (No-Code Tutorial) YouTube creator (automation)
  18. Video · How Founders Use AI Build an AI Competitor Analysis Tool with Lovable AI & Firecrawl | Full Tutorial YouTube creator (dev tutorials)
  19. Video · How Founders Use AI AI Competitors Analysis: The Only AI Workflow I Trust YouTube creator (marketing ops)
  20. Video · How Founders Use AI Miro Flows Tutorial: Automate Competitor Analysis with AI Miro
  21. A dense long-form interview on positioning fundamentals your AI research must plug into. fs.blog Podcast · How Founders Use AI April Dunford: Product Positioning (The Knowledge Project Ep. 201) Farnam Street / Shane Parrish
  22. Head-to-head benchmark so you pick the right model for landscape work. panoramata.co Article · How Founders Use AI Which AI Tool Wins for Competitive Analysis? ChatGPT, Claude, and Gemini Compared Panoramata
  23. Gemini-specific prompts and workflow for competitor mapping with live web grounding. panoramata.co Article · How Founders Use AI How to Use Google Gemini for Competitor Analysis Panoramata
  24. An agent-based playbook showing what a full market scan looks like when AI does the legwork. manus.im Guide · How Founders Use AI AI Competitor Analysis Tool: Research Any Market Fast Manus

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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