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 Perplexity CEO explains RAG: Retrieval-Augmented Generation Lex Fridman
  2. Video · How Founders Use AI Nikhil Kamath ft. Perplexity CEO Aravind Srinivas | WTF Online Ep 1 Nikhil Kamath (WTF)
  3. The Wharton professor's definitive framing of the shift from searching for links to delegating research. oneusefulthing.org Article · How Founders Use AI The End of Search, The Beginning of Research Ethan Mollick
  4. The primary source on how ChatGPT blends live web results with a conversational interface. openai.com Article · How Founders Use AI Introducing ChatGPT search OpenAI
  5. Google's CEO pressed hard on what AI answers do to the web, straight from the incumbent's mouth. podcasts.apple.com Podcast · How Founders Use AI Google's Sundar Pichai on AI-powered search and the future of the web (Decoder) Nilay Patel, The Verge
  6. A hands-on, regularly updated comparison of the two tools founders reach for first. zapier.com Article · How Founders Use AI Perplexity vs. ChatGPT: Which AI tool is better? Zapier
  7. Side-by-side query tests that show concretely when AI search saves time and when Google still wins. felloai.com Article · How Founders Use AI Google Search vs. Perplexity: The Best Search Tool for Daily Use in 2025 Fello AI
  8. A structured teardown of how the answer-engine experience differs from the link-list experience. llmrefs.com Article · How Founders Use AI Perplexity vs Google: A Head-to-Head SEO and UX Analysis LLMrefs
  9. The official quick-start covering Search, Research and Labs modes so you use the right one per task. perplexity.ai Guide · How Founders Use AI Getting Started with Perplexity Perplexity
  10. Video · How Founders Use AI How To Use Perplexity AI For Research - Terrifyingly SMART! AI educator (YouTube)
  11. Video · How Founders Use AI How to Use Perplexity AI 2025 (Step by Step Tutorial for Beginners) YouTube tutorial
  12. The India moment for AI search: Perplexity Pro bundled free for Airtel users, worth checking if you qualify. airtel.in Article · How Founders Use AI Airtel partners with Perplexity: Pro for 360mn customers Airtel
  13. Why web-grounded Claude changed the calculus for founders who prefer Claude's reasoning. venturebeat.com Article · How Founders Use AI Anthropic just gave Claude a superpower: real-time web search VentureBeat
  14. OpenAI's own India-focused session on replacing search with ChatGPT's research stack. academy.openai.com Video · How Founders Use AI ChatGPT for Research: Web Search, Deep Research & Code (OpenAI Academy India) OpenAI Academy India
  15. Video · How Founders Use AI Introduction to Deep Research (launch demo from Tokyo) OpenAI
  16. Video · How Founders Use AI OpenAI's Deep Research Agent in 8 Minutes YouTube explainer
  17. The official how-to including query limits per plan, so you spend your monthly runs wisely. help.openai.com Guide · How Founders Use AI Deep research in ChatGPT (Help Center) OpenAI
  18. Google's launch post explaining the plan-approve-refine flow Gemini pioneered. blog.google Article · How Founders Use AI Try Deep Research and our new experimental model in Gemini Google
  19. Short official playbook on editing the research plan and asking for report revisions. blog.google Guide · How Founders Use AI How to use Google's Deep Research: official tips Google
  20. Video · How Founders Use AI No Priors Ep. 112: OpenAI Deep Research with Isa Fulford No Priors (Sarah Guo, Elad Gil)
  21. Isa Fulford and Josh Tobin on what the agent is actually good and bad at, from the source. sequoiacap.com Podcast · How Founders Use AI OpenAI's Deep Research on Training AI Agents End-to-End (Training Data) Sequoia Capital
  22. A widely shared operator thread: use a strong model to write your deep research prompt first. x.com Thread · How Founders Use AI How I'm using Deep Research (prompting walkthrough) BuccoCapital Bloke
  23. A fill-in-the-blanks system that reliably turns vague questions into report-grade briefs. ahmadosman.com Guide · How Founders Use AI My Ultimate DeepResearch Prompt Builder Template Ahmad Osman
  24. A living library of proven deep research prompts across OpenAI, Gemini and Qwen. github.com Tool · How Founders Use AI awesome-deep-research-prompts (GitHub) LangGPT community

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The hubs