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 team behind Audio Overviews explains why the format landed, useful for content strategy. sequoiacap.com Podcast · How Founders Use AI NotebookLM's Raiza Martin and Jason Spielman on delightful AI podcast hosts Sequoia Training Data
  2. A podcast-tools company honestly tests where NotebookLM audio is and isn't good enough. descript.com Article · How Founders Use AI Notebook LM: Turn Documents into Your Own Podcasts Descript
  3. Primary source on the image model that made real-product editing mainstream. blog.google Article · How Founders Use AI Nano Banana Pro: Gemini 3 Pro Image model Google DeepMind
  4. The launch of accurate in-image text, the feature that unlocked AI marketing graphics. openai.com Article · How Founders Use AI Introducing 4o Image Generation OpenAI
  5. Structured hands-on intro to prompt-based image editing with your own photos. codecademy.com Guide · How Founders Use AI How to use Gemini 2.5 Flash Image (Nano Banana) Codecademy
  6. Concrete ecommerce transformations, pack shot to lifestyle scene, you can copy directly. marketing4ecommerce.net Article · How Founders Use AI 10 wild examples of how to use Nano Banana Marketing4eCommerce
  7. A PPC agency's prompt patterns for ad-ready product imagery. jumpfly.com Guide · How Founders Use AI How to Write High-Performance Image Prompts for Nano Banana JumpFly
  8. Video · How Founders Use AI 5 steps to generate consistent brand images with Midjourney Jamey Gannon
  9. Video · How Founders Use AI MidJourney AI Branding Tutorial for Client Images Mark de Grasse (AI Brand Academy)
  10. A professional logo designer shows where AI concepts help and where they stop. ebaqdesign.com Guide · How Founders Use AI How to Use Ideogram for Logo Design Ebaq Design (Arek Dvornechuck)
  11. Prompt-level detail for marketing collateral, mockups, and A/B variants. learnprompting.org Guide · How Founders Use AI GPT-4o Image Generation: A Complete Guide + 12 Prompt Examples Learn Prompting
  12. The company powering millions of seller product photos explains what quality actually takes. tech.eu Article · How Founders Use AI Photoroom CEO: We have spent millions on AI training data Tech.eu
  13. The keep-the-product, generate-the-scene workflow spelled out. claid.ai Guide · How Founders Use AI Midjourney product photography: AI backgrounds for your products Claid.ai
  14. A practical two-tool pipeline: Midjourney scenes plus compositing your real product in. scene4.ai Guide · How Founders Use AI How to Use MidJourney for Product Photography (Guide + No-Prompt Workflow) SCENE4
  15. How to get exact typography out of Ideogram, the thing other models still fumble. pixeldojo.ai Guide · How Founders Use AI Ideogram 4 Prompting Guide: Best-in-Class Text Rendering PixelDojo
  16. Tactical fixes, brand colors, negative prompts, style codes, for common off-brand failures. godofprompt.ai Guide · How Founders Use AI 12 Midjourney Prompt Tricks for Perfect Brand Imagery God of Prompt
  17. A maintained per-second price table across every major model, updated monthly. buildmvpfast.com Guide · How Founders Use AI AI Video Generation API Pricing: Veo 3.1, Kling 3.0, Seedance, Runway BuildMVPFast
  18. 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
  19. 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
  20. 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
  21. A named stack (Veo 3.1, Nano Banana, ElevenLabs, Figma) with the prompts included; its editor, CapCut, is banned in India, so... kieranflanagan.io Guide · How Founders Use AI Kieran Flanagan's Substack (AI Video Ad Stack guide + prompts) Kieran Flanagan (HubSpot CMO)
  22. 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
  23. 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
  24. 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

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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