Explore
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.
- The Instructor creator on why validation beats vibes for reliability. latent.space Podcast · How Founders Use AI High Agency Pydantic > VC Backed Frameworks, with Jason Liu Latent Space
- How Anthropic's own design team works when the material being designed is a model. lennysnewsletter.com Podcast · How Founders Use AI The design process is dead. Here's what's replacing it. | Jenny Wen Lenny's Podcast with Jenny Wen (Claude design lead)
- Designing AI features by prototyping against real models, not static mocks. lennysnewsletter.com Podcast · How Founders Use AI How Notion's design team uses Claude Code to prototype How I AI with Brian Lovin (Notion)
- Heller sold Casetext for $650M; he explains exactly where the defensibility lived. creators.spotify.com Podcast · How Founders Use AI Why Vertical LLM Agents Are The New $1 Billion SaaS Opportunities Y Combinator with Jake Heller (Casetext)
- When everyone has the same models, taste and product quality become the differentiator. open.spotify.com Podcast · How Founders Use AI Figma's CEO: Why AI makes design, craft, and quality the new moat Lenny's Podcast with Dylan Field
- Why speed itself is now a moat, and what that demands of a small team. a16z.com Podcast · How Founders Use AI How AI Created the Fastest Product Cycle in History a16z (Anish Acharya)
- 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)
- The founder behind the famous $0.99-per-resolution model on how it actually scaled. open.spotify.com Podcast · How Founders Use AI AI agent Fin nearing $100m revenue: Des Traynor Scaling Europe
- Last's first outside interview on the practical engineering of a reliable AI product at scale. open.spotify.com Podcast · How Founders Use AI How Notion Cofounder Simon Last Builds AI for Millions of Users AI and I (Dan Shipper, Every)
- Google's CEO pressed hard on what AI answers do to the web, straight from the incumbent's mouth. podcasts.apple.com Podcast · How Founders Use AI Google's Sundar Pichai on AI-powered search and the future of the web (Decoder) Nilay Patel, The Verge
- Isa Fulford and Josh Tobin on what the agent is actually good and bad at, from the source. sequoiacap.com Podcast · How Founders Use AI OpenAI's Deep Research on Training AI Agents End-to-End (Training Data) Sequoia Capital
- Researchers debate what the hallucination paper actually means for everyday users. ibm.com Podcast · How Founders Use AI Why language models hallucinate (Mixture of Experts) IBM Mixture of Experts
- A business-use-case shootout of the deep research modes specifically. multiplai.ai Podcast · How Founders Use AI The Ultimate Battle of Deep Research: ChatGPT vs Gemini vs Perplexity vs Grok vs You (Leveraging AI ep 171) Isar Meitis, Leveraging AI
- The foundational interviewing craft your AI synthesis is only as good as. open.spotify.com Podcast · How Founders Use AI Teresa Torres on how to interview customers (Lenny's Podcast) Lenny Rachitsky
- A running feed of screen-shared research workflows, prompts included. lennysnewsletter.com Podcast · How Founders Use AI How I AI (show hub): practical AI workflows from top operators Claire Vo / Lenny's Network
- A longer cut going deeper on Reddit strategy without spamming. open.spotify.com Podcast · How Founders Use AI The ultimate guide to AEO (Director's Cut) on Masters of Search Masters of Search
- Indig unpacks the behavior shift behind all the AEO tactics. marketingspeak.com Podcast · How Founders Use AI The Future of Search Isn't Search (with Kevin Indig) Marketing Speak
- The build story with the team, full of hints about using it well. latent.space Podcast · How Founders Use AI How NotebookLM Was Made Latent Space
- The creators explain grounding and why it hallucinates less. podcasts.apple.com Podcast · How Founders Use AI Inside NotebookLM with Raiza Martin and Steven Johnson Google DeepMind Podcast (Hannah Fry)
- A strategic conversation on source-grounded AI as a research paradigm. exponentialview.co Podcast · How Founders Use AI How NotebookLM was created and where it's going (live with Steven Johnson) Azeem Azhar, Exponential View
- A business-user walkthrough of the current feature set. youreverydayai.com Podcast · How Founders Use AI NotebookLM: New features, what's next and complete walkthrough (Everyday AI ep 627) Everyday AI (Jordan Wilson)
- The builders on what the agent is genuinely good for versus demo-ware. sequoiacap.com Podcast · How Founders Use AI OpenAI Just Released Its Powerful New ChatGPT Agent (Training Data) Sequoia Capital
- Concrete business workflows, including competitor and market monitoring. youreverydayai.com Podcast · How Founders Use AI 5 Business Use-Cases for Comet, Perplexity's agentic browser (EP 614) Everyday AI (Jordan Wilson)
- Patel presses Google's CEO on Google Zero directly; hear the incumbent's answer. open.spotify.com Podcast · How Founders Use AI How Sundar Pichai is rethinking Google for the AI era (Decoder) Nilay Patel, The Verge
The hubs
Starting Up
Find an idea, validate it, build, and land your first customers.
GTM
Go-to-market, from breaking in to how the best teams do it.
D2C
Building a direct-to-consumer brand, India-first.
Wealth
Paying yourself, ESOPs, secondaries, and de-risking founder wealth.
How Founders Use AI
How founders actually put AI to work, mapped topic by topic.
Glossary
Plain-language definitions of the startup and VC terms you'll hit.
eChai Partner Brands
The partnership →