
Andy Cook
9.2K posts

Andy Cook
@AndyGCook
Co-founder of @Tettra. Formerly at HubSpot via Rentabilities (acquired Oct 2013) - I tweet mostly about SaaS and startups.


I'm going to call this right now. We are going to have a large population with absolutely no critical thinking skills if they blindly trust AI for everything. We have all already seen it. They don't validate outputs. They don't really understand anything. They just ask questions, it looks good, and they go with it. There are going to be huge issues in every company as this continues over the years. The amount of technical debt and knowledge gaps are going to be insane. So much opportunity if you actually know what you're doing.


Today I'm releasing my entire newsletter archive (350+ posts) and all podcast transcripts (300+ episodes) as AI-friendly Markdown files. Plus an MCP server and GitHub repo. A few months ago I shared my podcast transcripts on a whim, and y'all built the most amazing things—an RPG game, a parenting wisdom site, infographics, a Twitter bot, and 50+ other projects. Let's see what happens when I give you even more data. Grab the data here: LennysData.com. Paid subscribers get all of the data (some 350 posts and 300 transcripts). Free subscribers get a subset. I don’t think anyone’s ever done anything like this before, and I’m excited to give you this excuse to play with that AI tool you've been meaning to try. Here’s my challenge to you: build something, and let me know about it. I’ll pick my favorite and give you a free 1-year subscription to the newsletter. Just post a link to your project in the comments here: lennysnewsletter.com/p/how-i-built-…. If you’ve already built something, slurp in this new data and submit it, too. I’ll pick a winner on April 15th. Check out today's newsletter post for inspiration on what you could to build: lennysnewsletter.com/p/how-i-built-… LFG.

My first 6 years as a startup founder: - Started by building AI mobile apps at 20yo - Failed with 4+ startups - Ran out of money multiple times - Was rejected by Y Combinator 8 times - Had a $15k credit card debt - Got 200+ rejections from investors My last year as a startup founder: - Moved to SF - Launch Rork, AI mobile app builder, to make my year 1 self happy - Got into a16z speedrun and raised $3M+ - Scaled Rork to millions in ARR in under a year - Became the #1 AI mobile app builder in the world The average journey to a $1B company takes 10 years. I’m on year 7. Keep building.










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