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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. Translates opaque credit systems into clips-per-month you can budget against. magichour.ai Article · How Founders Use AI AI Video Generator Pricing: What 10 Tools Actually Cost (And What You Get) Magic Hour
  2. The one decision that swings your bill 10x: subscription seats vs metered API. rangy.ai Article · How Founders Use AI AI Video Pricing Explained: APIs vs Subscriptions Rangy
  3. Free-tier to $200-a-month tiers mapped against actual output volume. blog.laozhang.ai Article · How Founders Use AI How Much Does an AI Video Generator Cost? (Complete Pricing Guide) LaoZhang AI
  4. A named stack, Veo 3.1, Nano Banana, ElevenLabs, Figma, CapCut, with the prompts included. kieranflanagan.io Guide · How Founders Use AI Kieran Flanagan's Substack (AI Video Ad Stack guide + prompts) Kieran Flanagan (HubSpot CMO)
  5. The audio companion to the stack guide: what each tool in the chain is for. open.spotify.com Podcast · How Founders Use AI How to Make the Most Realistic AI Videos (Step-by-Step Tutorial) Marketing Against The Grain
  6. The real cost anatomy of a broadcast-quality AI ad, including the wasted generations. marktechpost.com Article · How Founders Use AI AI-Generated Ad Created with Veo 3 Airs During NBA Finals, Slashing Costs by 95% MarkTechPost
  7. Concise cost-and-workflow summary you can forward to a cofounder. therundown.ai Article · How Founders Use AI AI ads hit primetime with Kalshi's Veo 3 commercial The Rundown AI
  8. The rupee version: lakhs-per-month production budgets cut to a third with AI-assisted flow. atomcomm.in Article · How Founders Use AI AI Ad Creation vs Traditional Production: Cost & ROI Comparison Atom Communications (India)
  9. The official anatomy of a Veo prompt: subject, action, scene, camera, style, audio. deepmind.google Guide · How Founders Use AI How to create effective prompts with Veo 3 Google DeepMind
  10. Google's own worked examples for the current model version. cloud.google.com Guide · How Founders Use AI Ultimate prompting guide for Veo 3.1 Google Cloud
  11. The reference-doc version, useful when you need exact parameter behaviour. docs.cloud.google.com Guide · How Founders Use AI Video generation prompt guide (Gemini Enterprise docs) Google Cloud Documentation
  12. Practitioner-tested Veo patterns from a platform that watches thousands of generations. replicate.com Guide · How Founders Use AI How to prompt Veo 3 for the best results Replicate
  13. Video · How Founders Use AI How To Use Google VEO 3 JSON Prompting To Create Ad Videos Like a PRO YouTube tutorial
  14. Video · How Founders Use AI How To Use Google VEO 3 JSON Prompting To Create $100k AI Ads YouTube tutorial
  15. Good example gallery for calibrating how much detail a video prompt needs. leonardo.ai Guide · How Founders Use AI Veo 3 Prompt Guide: Tips & Examples Leonardo.Ai
  16. Beginner-safe walkthrough with before/after prompt rewrites. dreamhost.com Guide · How Founders Use AI The Ultimate Veo 3.1 Prompt Guide DreamHost
  17. A filmmaking platform's take, strong on camera language and shot grammar. ltx.io Guide · How Founders Use AI Veo 3.1 Prompt Guide: Best Veo 3.1 Prompts LTX Studio
  18. Templates and structure for prompting Veo programmatically. piapi.ai Guide · How Founders Use AI Veo 3 API: Writing Good Prompts, Best Practices PiAPI
  19. Free official course on the describe-generate-revise loop, camera moves, and references. academy.runwayml.com Course · How Founders Use AI Runway Academy Runway
  20. Aggregates the official guidance into one structured cheat sheet. ulazai.com Guide · How Founders Use AI Google Veo 3 Prompting Best Practices: Official Guide, Structure and Examples UlazAI
  21. Ad-specific prompt recipes: hooks, product shots, and CTA scenes. syllaby.io Guide · How Founders Use AI How to Create Ads in Google Veo 3: A Complete Guide Syllaby
  22. How to capture a visual vibe once and apply it to everything, with style weights. docs.midjourney.com Guide · How Founders Use AI Style Reference (Midjourney docs) Midjourney
  23. Reference-image sets, character locks, and template reuse from a major video model team. kling.ai Guide · How Founders Use AI The Ultimate Guide to Keeping Your Character Consistent in AI Kling AI
  24. Covers Flow's ingredients and editing features that hold scenes together across shots. blog.google Article · How Founders Use AI Bringing new Veo 3.1 updates into Flow to edit AI video Google

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The hubs

Starting Up Find an idea, validate it, build, and land your first customers. 1046 questions GTM Go-to-market, from breaking in to how the best teams do it. 352 questions D2C Building a direct-to-consumer brand, India-first. 482 questions Wealth Paying yourself, ESOPs, secondaries, and de-risking founder wealth. 154 questions How Founders Use AI How founders actually put AI to work, mapped topic by topic. 278 questions Glossary Plain-language definitions of the startup and VC terms you'll hit. 390 terms
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