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. The founder-flavoured argument against reaching for the harder, smarter-sounding option. buildmvpfast.com Article · How Founders Use AI AI Workflows vs Agents: Why Workflows Win BuildMVPFast
  2. Video · How Founders Use AI Everything Gets Rebuilt: The New AI Agent Stack Harrison Chase (LangChain)
  3. The Sierra founder on where agents genuinely outperform, from thousands of deployments. open.spotify.com Podcast · How Founders Use AI Transforming Customer Service through Company Agents, with Bret Taylor No Priors (Sarah Guo and Elad Gil)
  4. The next interaction pattern: agents that act on events, with humans approving at checkpoints. inferencebysequoia.substack.com Article · How Founders Use AI Ambient Agents and the New Agent Inbox Sequoia Capital
  5. The developer-facing detail on what is stored, for how long, and how to reduce it. developers.openai.com Guide · How Founders Use AI Data controls in the OpenAI platform OpenAI
  6. The policy to quote when a customer asks whether their data trains the model. openai.com Guide · How Founders Use AI How your data is used to improve model performance OpenAI
  7. Anthropic's own account of what its API keeps: your prompts and Claude's outputs are not retained by default, with zero data... platform.claude.com Guide · How Founders Use AI API and data retention (Claude docs) Anthropic
  8. Where to pull compliance artifacts when an enterprise customer sends a security questionnaire. anthropic.com Guide · How Founders Use AI Anthropic's Transparency Hub Anthropic
  9. The ten security risks unique to LLM apps, with prompt injection at number one. aembit.io Article · How Founders Use AI OWASP Top 10 for LLM Applications, explained Aembit
  10. Concrete examples of each attack and the layered defences OWASP recommends. oligo.security Guide · How Founders Use AI OWASP Top 10 LLM: Examples and Mitigation Strategies Oligo Security
  11. Automatically probe your own app for injection and PII leaks before attackers do. promptfoo.dev Tool · How Founders Use AI OWASP LLM Top 10 red-teaming with Promptfoo Promptfoo
  12. A practitioner's walkthrough of how injections actually happen in RAG and agent apps. paulmduvall.com Article · How Founders Use AI Deep Dive into OWASP LLM Top 10 and Prompt Injection Paul Duvall
  13. One of India's top tech law firms translating DPDP obligations for AI builders specifically. ikigailaw.com Guide · How Founders Use AI DPDP Handbook for AI Developers Ikigai Law (India)
  14. The 2025 final rules applied to AI products, including the significant data fiduciary trap. protecto.ai Article · How Founders Use AI How To Comply With Final DPDP Rules For Agentic AI Protecto
  15. A global law firm's view for founders serving both Indian and international customers. reedsmith.com Article · How Founders Use AI India in focus: Data protection and AI in India Reed Smith
  16. Covers the hard problem: deleting a user whose data is baked into model weights. khuranaandkhurana.com Article · How Founders Use AI AI Training Data under India's DPDP Regime Khurana and Khurana (India)
  17. An independent plain-English summary to cross-check the official policies. meetily.ai Article · How Founders Use AI OpenAI Data Retention Policy: Does OpenAI Train on Your API Data? Meetily
  18. Compares training and retention defaults across providers in one table. spartner.software Article · How Founders Use AI LLM and data privacy: are they training on your data? Spartner
  19. The fast version of the OWASP list for a founder who needs the gist today. mend.io Article · How Founders Use AI OWASP Top 10 for LLM Applications: A Quick Guide Mend.io
  20. The most complete framework for choosing between seat, usage, and outcome models. bvp.com Guide · How Founders Use AI The AI pricing and monetization playbook Bessemer Venture Partners
  21. Real pricing pages of 40 AI startups decoded; pattern-match instead of guessing. growthunhinged.com Article · How Founders Use AI The state of AI pricing at 40 leading startups Kyle Poyar (Growth Unhinged)
  22. The trend data: 2 in 5 software companies now run hybrid subscription-plus-credits pricing. growthunhinged.com Article · How Founders Use AI What's changing with AI monetization Kyle Poyar (Growth Unhinged)
  23. Proof that nobody's pricing is final: 3.6 changes per company among the top 500. substack.com Thread · How Founders Use AI 1,800 pricing changes in 2025 Kyle Poyar
  24. Walks each pricing model with named examples and when each fits. getmonetizely.com Article · How Founders Use AI How to Price AI Services: Models, Examples, and Strategy Monetizely

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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