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. Clear explanation of AI Max for Search versus Performance Max, plus feed prep. channable.com Article · How Founders Use AI Google AI Max: What It Is, How It Works, How to Prepare Channable
  2. Includes the finding that under half of AI Max's 'new' queries were actually new. groas.com Article · How Founders Use AI Google AI Max Explained: Complete Guide for Search Campaigns Groas
  3. Covers the shift from black-box auto mode to per-module automation control. segwise.ai Article · How Founders Use AI TikTok Smart+ Upgrade: New Controls, Creative & Budgeting Segwise
  4. A $300M-spend practitioner on why creative and offer now decide outcomes, not targeting. entrepreneur.com Article · How Founders Use AI The Future of Advertising: Ben Heath's Insights on Innovation, AI and Consumer Behaviour Entrepreneur (feat. Ben Heath)
  5. Independent reporting on the efficiency gains and the rising CPM tax that comes with them. marketingdive.com Article · How Founders Use AI Meta's AI bets supercharge marketing efficiency, and costs Marketing Dive
  6. An India-lens view of what advertisers give up when the platform runs everything. exchange4media.com Article · How Founders Use AI Behind Meta's AI ad push lies a bigger shift in platform power Exchange4Media
  7. A week-by-week AI-powered competitive research system you can copy directly. toffu.ai Article · How Founders Use AI Meta Ad Library Competitor Research with AI Toffu AI
  8. Covers the new impression-range data that reveals which creatives competitors scale. adlibrary.com Guide · How Founders Use AI How to Use Meta Ad Library for Competitor Research AdLibrary.com
  9. Practical tricks for extracting far more signal than casual Ad Library browsing. brandsearch.co Article · How Founders Use AI Meta Ad Library Competitor Analysis: How to Get 10x the Data Brandsearch
  10. Agency-grade five-dimension analysis framework: creative, angle, format, duration, refresh. midsummer.agency Article · How Founders Use AI How to Use Meta Ads Library to Analyze Competitors and Find Winning Creatives Midsummer Agency
  11. Beginner-friendly walkthrough with the run-duration heuristic for spotting winners. simplified.com Article · How Founders Use AI Meta Ad Library: How to Use It to Spy on Competitors Simplified
  12. Always-on competitor tracking with creative velocity and transcription built in. foreplay.co Guide · How Founders Use AI How to Use Spyder in Foreplay Foreplay
  13. What changed when ad spying went from screenshots to structured AI insights. foreplay.co Article · How Founders Use AI Spyder 2.0: Your Creative-First Ad Spy & Insights Platform Foreplay
  14. A current tools-plus-strategy map across Meta, Google, and TikTok libraries. get-ryze.ai Guide · How Founders Use AI How to Spy on Competitors' Ads (Tools & Strategy Guide) Ryze AI
  15. Step-by-step on Google's transparency tools for video ad research. adlibrary.com Guide · How Founders Use AI YouTube Ad Library: How to Search Competitor Video Ads AdLibrary.com
  16. A repeatable framework for translating competitor patterns into your own briefs. trendtrack.io Article · How Founders Use AI How to Spy on Competitor Ads: Complete Framework Trendtrack
  17. Category map of spy tools with what each layer adds beyond the free libraries. bestever.ai Article · How Founders Use AI 11 Top Tools to Spy on Competitor Ads Bestever
  18. The 3-5x CPA per concept and 60-30-10 allocation rules, spelled out with numbers. admanage.ai Guide · How Founders Use AI Creative Testing Budget: 2026 Guide (Meta + TikTok) AdManage
  19. Ties weekly variant volume to daily spend so you test at the right scale. admanage.ai Article · How Founders Use AI How Many Ad Creatives to Test? (The Real Answer) AdManage
  20. A simple calculator-style method for founders setting their first test budget. flighted.co Article · How Founders Use AI How to Calculate Your Meta Ads Creative Testing Budget Flighted
  21. A full testing framework covering structure, budgets, and decision rules. topgrowthmarketing.com Guide · How Founders Use AI Meta Ads Creative Testing Framework for DTC Brands Top Growth Marketing
  22. Tactics for raising testing velocity without blowing up your CPA. adgpt.com Article · How Founders Use AI Meta Ads Creative: How to Test More and Find Winners Fast AdGPT
  23. A concrete recovery story when testing structure broke under the new engine. 1clickreport.com Article · How Founders Use AI Meta Andromeda Update: 5 Settings That Recovered Our ROAS in 14 Days 1ClickReport
  24. Why 10-20 genuinely distinct concepts became the testing baseline. adscale.com Article · How Founders Use AI Meta Andromeda Update: New Creative Strategy for Facebook and Instagram Ads AdScale

Show the next 24

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
eChai Partner Brands The partnership →