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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. The largest study of AI answer accuracy: 3,000 responses, 18 countries, sobering numbers. ebu.ch Article · How Founders Use AI AI assistants misrepresent news content 45% of the time (EBU/BBC study) EBU / BBC
  2. A readable summary of which assistants failed worst and on what. journalism.co.uk Article · How Founders Use AI Nearly half of AI-generated answers contain an error (EBU-BBC report) Journalism.co.uk
  3. A master practitioner reframes the real risk: errors that look plausible and are never checked. simonw.substack.com Article · How Founders Use AI Hallucinations in code are the least dangerous form of LLM mistakes Simon Willison
  4. Shows the fix is process discipline, not abandoning the tools; directly transferable to founders. thomsonreuters.com Article · How Founders Use AI GenAI hallucinations are still pervasive in legal filings, but better lawyering is the cure Thomson Reuters Institute
  5. Librarians teach lateral reading, the single most useful verification technique. guides.library.vcu.edu Guide · How Founders Use AI How to Fact Check Generative AI Virginia Commonwealth University Libraries
  6. Explains why models invent perfectly formatted citations to papers that never existed. citely.ai Article · How Founders Use AI ChatGPT Gave You References? Here's How to Check If They're Real Citely
  7. A running tally of what unverified AI output costs professionals in the real world. gc.ai Article · How Founders Use AI AI Hallucination Legal Cases: A Sanctions Tracker GC AI
  8. A consultancy-grade playbook on prompting and retrieval patterns that reduce fabrication. devoteam.com Guide · How Founders Use AI Understanding and Correcting AI Hallucinations: The 2025 Guide Devoteam
  9. The most maintained hands-on comparison across all the major assistants. zapier.com Article · How Founders Use AI The best AI chatbots in 2026 Zapier
  10. A task-by-task breakdown of the two tools founders most often pay for. zapier.com Article · How Founders Use AI Claude vs. ChatGPT: Which is best? Zapier
  11. Quickly maps which alternative wins for research, writing, coding and search. zapier.com Article · How Founders Use AI The 4 best ChatGPT alternatives in 2026 Zapier
  12. An honest single-reviewer verdict with real reports you can read yourself. androidauthority.com Article · How Founders Use AI Gemini's vs ChatGPT's Deep Research: For me, the choice is clear Android Authority
  13. Puts speed, depth and citation quality of each research agent on one page. felloai.com Article · How Founders Use AI AI Search and Deep Research Tools Compared 2026 Fello AI
  14. A concise practitioner thread comparing the four research agents on one task. x.com Thread · How Founders Use AI Deep Research comparison thread (ChatGPT vs Perplexity vs Gemini vs Grok) mBaileyz
  15. A workflow-oriented comparison useful for choosing a company-wide default. gmelius.com Article · How Founders Use AI ChatGPT vs Gemini vs Copilot vs Claude vs Perplexity vs Grok: AI assistants compared Gmelius
  16. Same-prompt tests scored across reasoning, research and writing tasks. bairesdev.com Article · How Founders Use AI The Ultimate AI Test: ChatGPT vs. Gemini vs. Perplexity vs. Copilot vs. Claude BairesDev
  17. A quick reference to hand a co-founder who has not kept up with the tools. techrepublic.com Article · How Founders Use AI AI Chatbot Cheat Sheet: Comparing ChatGPT, Gemini, Copilot, and More TechRepublic
  18. When your question needs peer-reviewed evidence, these specialist tools beat the general chatbots. paperguide.ai Article · How Founders Use AI Elicit vs Consensus: Detailed Comparison Paperguide
  19. Maps the academic-grade research stack for founders in health, deeptech or regulated spaces. iatrox.com Article · How Founders Use AI Best AI tools for evidence research: Elicit, Consensus, Semantic Scholar, Perplexity, scite iatrox
  20. The free reference 3M+ people learned from, covering zero-shot to ReAct with examples. promptingguide.ai Guide · How Founders Use AI Prompt Engineering Guide (promptingguide.ai) DAIR.AI
  21. A self-paced course version if you prefer structure over docs. academy.dair.ai Course · How Founders Use AI Introduction to Prompt Engineering (DAIR Academy) DAIR.AI
  22. Google's persona-task-context-format formula with role-specific examples; effective prompts average 21 words. services.google.com Guide · How Founders Use AI Gemini for Google Workspace Prompting Guide (handbook) Google
  23. The interactive version of the handbook, organised by job and use case. workspace.google.com Guide · How Founders Use AI Google Workspace with Gemini Prompt Guide Google Workspace
  24. A two-minute read of prompting basics to share with non-technical teammates. support.google.com Guide · How Founders Use AI Tips to write prompts for Gemini Google

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The hubs

Starting Up Find an idea, validate it, build, and land your first customers. 1046 questions GTM Go-to-market, from breaking in to how the best teams do it. 352 questions D2C Building a direct-to-consumer brand, India-first. 482 questions Wealth Paying yourself, ESOPs, secondaries, and de-risking founder wealth. 154 questions How Founders Use AI How founders actually put AI to work, mapped topic by topic. 278 questions Glossary Plain-language definitions of the startup and VC terms you'll hit. 390 terms
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