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. Peer-level research, not vendor content, on how vibe-coded systems degrade. arxiv.org Article · How Founders Use AI Vibe Coding in Practice: Flow, Technical Debt (research paper) arXiv researchers
  2. An honest longitudinal account of where AI-first building holds up and where it collapses. arxiv.org Article · How Founders Use AI Context Before Code: An Experience Report on Vibe Coding in Practice arXiv researchers
  3. The strongest version of the case against, worth absorbing before you disagree with it. forbes.com Article · How Founders Use AI Vibe Coding Will Break Your Company Jason Wingard (Forbes)
  4. A practical decision framework for the exact hire-or-not moment. calgaryappdeveloper.ca Article · How Founders Use AI Vibe Coded Projects: What They're Good For and When to Go Pro Calgary App Developer
  5. The person who coined the term reflects on what the year taught everyone. x.com Thread · How Founders Use AI Karpathy's one-year vibe coding retrospective Andrej Karpathy
  6. Traces how a throwaway tweet became production practice, and what got lost on the way. coderabbit.ai Article · How Founders Use AI A semantic history of vibe coding: tweet, meme and workflow CodeRabbit
  7. A working developer's argument that the label hides the discipline the practice needs. peteroome.com Article · How Founders Use AI Stop saying 'vibe coding' Pete Roome
  8. Includes the 2-4x production-hardening multiplier to budget before you start. buildthisnow.com Guide · How Founders Use AI Vibe Coding's 90-Day Reckoning: The Technical Debt Nobody Warns You About Build This Now
  9. Balanced guidance on which workloads belong with AI builders and which never will. workflowgen.com Article · How Founders Use AI Vibe Coding and the Enterprise: Opportunities, Pitfalls, and the Path Forward WorkflowGen
  10. The governance view: how bigger companies contain the blast radius of citizen-built tools. innfactory.ai Guide · How Founders Use AI Vibe Coding in the Enterprise: A Guide for IT Leaders and CIOs innFactory
  11. Breaks the real bill into subscriptions, credits, hosting, and the debugging hours nobody prices in. glideapps.com Article · How Founders Use AI The hidden cost of AI coding: how much does it cost to vibe code an application? Glide
  12. A named company's receipts: which SaaS they dropped and what they built instead. medium.com Article · How Founders Use AI How Vibe-Coded Apps Saved Us $60k in SaaS Tarek Sadi (Blinkist)
  13. The best accounting of the after-ship costs: iteration, backend fees, and engineering time. hatchworks.com Article · How Founders Use AI The Real Cost of Vibe Coding: What You Don't See Until It's Too Late HatchWorks
  14. A decision framework with actual dollar thresholds instead of vibes. mindstudio.ai Guide · How Founders Use AI Build vs Buy for AI Tools: A Framework for Business Owners Using Claude Code MindStudio
  15. Explains why the same tool costs one founder $20 and another $1,000 a month. morphllm.com Article · How Founders Use AI AI Coding Costs: Real Monthly Spend From Token Math Morph
  16. A FinOps company's plain-language breakdown of what agentic coding actually bills. finout.io Article · How Founders Use AI Claude Code Pricing 2026: Complete Plans and Cost Guide Finout
  17. Practical tactics for keeping your build tool inside a bootstrapper's budget. siteground.com Guide · How Founders Use AI Claude Code pricing in 2026: what changed and how to keep building affordably SiteGround Academy
  18. Total-cost-of-ownership math for replacing per-seat SaaS with built software. belitsoft.com Article · How Founders Use AI Enterprise Vibe Coding vs SaaS Belitsoft
  19. Documents the collapse from $50k-$250k MVPs to under $5k in tooling and tokens. ideas2it.com Guide · How Founders Use AI Custom Software Development: The Build vs. Buy Guide Ideas2IT
  20. Adds the security-cost line item most build-vs-buy spreadsheets forget. cyberunit.com Article · How Founders Use AI Vibe Coding and the SaaS Shakeup: What Business Leaders Need to Know Cyber Unit
  21. How teams keep agentic coding spend visible once several people are building. mavvrik.ai Article · How Founders Use AI Claude Code Cost Management: Attribution, Allocation and Optimization Mavvrik
  22. Community-tested moves that cut token bills 40-85% without slowing you down. buildthisnow.com Guide · How Founders Use AI Cut Claude Code Token Costs Build This Now
  23. A current cost comparison of custom AI tools against branded SaaS pricing. digitalapplied.com Article · How Founders Use AI Build vs Buy: The Case for Custom AI Tools Digital Applied
  24. Concrete budget bands ($500 to $5,000, 2 to 8 weeks) for a functional build. serenitiesai.com Guide · How Founders Use AI How to Build a SaaS with Vibe Coding (Step-by-Step Guide) Serenities AI

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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
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