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. An India-first agent that books rides and pays bills in 13 languages. analyticsindiamag.com Article · How Founders Use AI What Makes Kruti India's First Agentic AI Assistant? Analytics India Magazine
  2. The top five agents to build and use for product work, step by step. news.aakashg.com Guide · How Founders Use AI AI Agents for Product Managers: The Ultimate Guide Aakash Gupta and Vikash Rungta
  3. Zapier's step-by-step: write instructions, connect the apps it finds, set a trigger and test; notes that Agents are moving to... help.zapier.com Guide · How Founders Use AI Build an agent in Zapier Agents Zapier
  4. The market leader maps the whole landscape, including its competitors. langchain.com Article · How Founders Use AI The best AI agent frameworks in 2026 LangChain
  5. A builder-team's practical ranking of open-source options you can self-host. firecrawl.dev Article · How Founders Use AI The best open source frameworks for building AI agents Firecrawl
  6. A decision-tree comparison instead of a feature dump. codebridge.tech Article · How Founders Use AI LangGraph vs CrewAI vs Microsoft Agent Framework vs OpenAI Agents SDK Codebridge
  7. Current production-readiness notes on each major framework's latest release. openagents.org Article · How Founders Use AI CrewAI vs LangGraph vs AutoGen vs OpenAgents Compared OpenAgents
  8. Benchmarks the same task across three frameworks so you see real differences. techsy.io Article · How Founders Use AI LangGraph vs CrewAI vs OpenAI Agents SDK Techsy
  9. The pattern catalogue (routing, orchestrator, evaluator) that outlives any framework. resources.anthropic.com Guide · How Founders Use AI Building Effective AI Agents: Architecture Patterns and Implementation Frameworks Anthropic
  10. A free short course on the most minimal serious agent framework. deeplearning.ai Course · How Founders Use AI Building Code Agents with Hugging Face smolagents DeepLearning.AI + Hugging Face
  11. The no-code side of the decision, compared honestly on price and power. digidop.com Article · How Founders Use AI n8n vs Make vs Zapier: which automation tool? Digidop
  12. A rival platform's surprisingly fair breakdown of the two power-user tools. zapier.com Article · How Founders Use AI n8n vs. Make: which is best? Zapier
  13. Helps you pick by team skill level rather than feature checklists. flowmondo.com Article · How Founders Use AI n8n vs Zapier vs Make: which is right for you Flowmondo
  14. Condenses Anthropic's build guidance into checklist form. maryammiradi.com Article · How Founders Use AI Build AI Agents: 40 Key Lessons from Anthropic's Masterclass Maryam Miradi
  15. An India-based roundup of free certified learning paths per framework. analyticsvidhya.com Article · How Founders Use AI 15 Free Courses on AI Agents with Certificates Analytics Vidhya
  16. A quick no-code vs code triage before you commit a weekend. easyclaw.com Article · How Founders Use AI How to Build AI Agents: 5 Best Platforms EasyClaw
  17. Names the paradox every founder hits: cheaper tokens, bigger bills. navyaai.com Article · How Founders Use AI AI Token Cost Over Time: Down 99.7%, Bills Up 3x NavyaAI
  18. Explains the quadratic context growth that quietly multiplies agent costs. leanopstech.com Article · How Founders Use AI AI Agents Burn 50x More Tokens Than Chats LeanOps
  19. How large buyers model agent economics, useful when selling to them. ey.com Article · How Founders Use AI Agentic AI Enterprise Token Cost EY
  20. Concrete per-task cost ranges from cheap chatbot turns to $5+ agent runs. cowork.ink Article · How Founders Use AI AI Agent Cost: Token Economics & Optimization Guide Cowork
  21. Walks through the exact math of an agent whose unit economics collapse. medium.com Article · How Founders Use AI Token Cost Trap: Why Your AI Agent's ROI Breaks at Scale Klaus Hofenbitzer
  22. One page comparing how each provider's caching discount actually works. prompthub.us Guide · How Founders Use AI Prompt Caching with OpenAI, Anthropic, and Google Models PromptHub
  23. Shows 72% of production cost sits outside the model invoice. optimumpartners.com Article · How Founders Use AI AI Token Costs: Why Enterprise AI Bills Keep Rising Optimum Partners
  24. A hands-on implementation guide with before-and-after cost numbers. digitalocean.com Guide · How Founders Use AI Prompt Caching for Anthropic and OpenAI Models DigitalOcean

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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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