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. Tackles the real risk of AI summarization: averaging away your most important outliers. qualz.ai Article · How Founders Use AI How to Analyze Open-Ended Survey Responses at Scale Without Losing the Nuance Qualz.ai
  2. A 15-minute workflow from thousands of raw reviews to formatted analysis. resources.opencraftai.com Article · How Founders Use AI How to Analyze Customer Reviews with ChatGPT OpenCraft AI
  3. Covers combining review, survey, and support data into one AI pass. ravecapture.com Article · How Founders Use AI How to Analyze Customer Feedback with AI RaveCapture
  4. Video · How Founders Use AI Use ChatGPT to Analyze Customer Feedback Content Sparks
  5. When to trust AI theming and when a human needs to review the codebook. getthematic.com Article · How Founders Use AI Analyze Open-Ended Survey Responses with AI Thematic
  6. The academic gold standard, useful for making your AI-assisted analysis defensible. atlasti.com Guide · How Founders Use AI Thematic Analysis in Surveys: Guide & Examples ATLAS.ti
  7. Video · How Founders Use AI B2B Startup Metrics (Startup School) Y Combinator
  8. The short written version to revisit each planning cycle. ycombinator.com Guide · How Founders Use AI How to choose a metric and set your KPI Y Combinator
  9. Fresh retention benchmarks including the AI-era 'smiling curve' phenomenon. a16z.com Article · How Founders Use AI Retention Is All You Need Andreessen Horowitz
  10. Still the best cohort-analysis explainer written for first-time SaaS founders. medium.com Guide · How Founders Use AI The P9 Guide to Cohort Analysis in SaaS Christoph Janz (Point Nine)
  11. Shows AI building your cohort table when spreadsheets intimidate you. saas.wtf Article · How Founders Use AI SaaS Cohort Analysis using AI SaaS.wtf
  12. A worked churn analysis with ChatGPT you can replicate on your own export. saas.wtf Article · How Founders Use AI Churn Analysis using ChatGPT SaaS.wtf
  13. Warns how AI-driven signup waves distort early retention data. userpilot.com Article · How Founders Use AI Cohort Retention Analysis: How to Separate Real Users From AI Tourists Userpilot
  14. An India-based product studio's metric list mapped to SaaS vs e-commerce. f22labs.com Article · How Founders Use AI 15 Essential Startup Growth Metrics & KPIs to Track F22 Labs
  15. Jargon-free cohort mechanics aimed at founders, not analysts. blog.mean.ceo Guide · How Founders Use AI Cohort Analysis for Retention: A Founder's Guide MEAN CEO
  16. Argues for fewer numbers, better defined, matched to your stage. blog.mean.ceo Guide · How Founders Use AI Analytics Stack for Different Startup Stages: Pre-Seed to Series MEAN CEO
  17. Turns cohort tables into concrete churn-reduction actions. baremetrics.com Article · How Founders Use AI How to Cut Churn Using Cohort Analysis (No Jargon) Baremetrics
  18. A practitioner's guide to letting AI agents monitor your metrics for you. adasight.com Article · How Founders Use AI Amplitude AI Agents: Smarter Product Decisions Adasight
  19. What to measure and build at each stage so you never over-invest early. definite.app Guide · How Founders Use AI Data Analytics for Startups: A Stage-by-Stage Framework Definite
  20. How to set up metrics infrastructure that AI tools can actually reason over. tasman.ai Guide · How Founders Use AI The Founder's Guide to an AI-Native Data Stack in 2025 Tasman Analytics
  21. OpenAI's own recipe, including keeping the original file untouched while writing a cleaned copy. learn.chatgpt.com Guide · How Founders Use AI Clean and prepare messy data (official use case) OpenAI
  22. Video · How Founders Use AI How to Clean Up Messy Data in Minutes with Claude AI (Excel) p2automation
  23. Video · How Founders Use AI How CFOs Are Cleaning Messy Excel Data with AI: 3 Methods, Zero Manual Work Christian Martinez (AI for Finance)
  24. Video · How Founders Use AI AI in Spreadsheets: How to Clean Data, Translate, Classify at Scale The GRAPH Courses

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The hubs