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Greg's Letter

Free startup ideas and frameworks to help you win on the internet. The weekly email written by Greg Isenberg that gets 100,000+ people's creative juices flowing.

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AI Slop Arbitrage

Lately, I've been obsessed with finding AI tools that are hidden gems. Not your classic ChatGPT or Claude. Most people haven't heard of Genspark, but they're the "super agent" company quietly doing $50M ARR. It must be working. Their platform lets you prompt multiple LLMs at once to get sharper ideas, better images, and cleaner outputs. I reached out to them to understand their best practices, got the details from their co-founder and recorded my honest review of it all going through it....

Okay, let me get this straight… You can use Sora 2 to create Hollywood level videos in seconds to build audiences of millions. You can drag-and-drop n8n or Zapier workflows and instantly plug in Lindy agents to automate outreach, reporting, research, even legal docs. You can clone your voice with ElevenLabs in under 10 seconds and layer it on HeyGen avatars to create talking head videos without ever filming. You can run open-source models like LLaMA-3 or Kimi K2 on your laptop using Ollama or...

Hey friend, I made a movie for you. It’s called The AI Gold Rush Documentary which documents this insane moment in time where with AI, anything is possible and many millionaires will be minted. You can watch it here. I'd love for you to watch it, share it with some friends. I give free value to inspire you and get your creative juices flowing. Why I made this for you: I take the internet for granted sometimes. Maybe you do too? It’s like oxygen: everywhere, invisible, easy to overlook. You...

New episode of the pod is live on YouTube, Spotify, Apple Everyone says you'll make money starting/buying a "boring" business like an HVAC, plumbing business. They're wrong. I had the Boring Marketer show us EXACTLY how to find boring local business ideas that print using AI and Google Maps automation (no one is doing this). He started a $30k/month diesel mechanic business using this workflow. And how to build products for them using AI, n8n etc. Insane episode. People charge $10k+ for this,...

Today’s Greg’s Letter is sponsored by Brex. Managing startup finances with a legacy bank is like driving cross-country on a paper map, possible, but painful. Brex is Google Maps: live, automated, and always a step ahead. Brex is my AI-powered bank. It auto-tags every expense, locks in budgets, and pipes data straight into QuickBooks, Xero, or NetSuite. I earn 4.37 % on idle cash and tap credit limits up to 20× higher than traditional banks They hooked up Greg’s Letter readers with serious...

I'm excited to announce a new feature from Ideabrowser.com called "community signals" It scans/analyzes Reddit, Facebook Groups, thousands of internet communities using AI agents to find startup ideas that have a high likelihood of success. It is the most comprehensive software to find ideas people want you to build. Instead of guessing what to build, you get a pipeline of validated problems with frustrated customers already lined up. Think of it as having 100 research assistants who never...

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Today’s Greg’s Letter is sponsored by Brex. The difference between managing startup finances with a traditional bank vs Brex is like using a Google Maps instead of a paper map. Both technically work, but one is smarter. Brex is my AI-powered bank. It automatically categorizes expenses, enforces budgets, and integrates with my accounting tools. I sleep better knowing I have actual control over company spend, earn 4.37% on cash, and get 20x higher credit limits than traditional banks. They...

I was thinking about the state of startups recently and I had a realization. Every time a platform shift hits, there's a brief, golden phase when the rules get rewritten and the tools feel unfairly good. That's exactly where we're sitting right now. (sidenote, highly recommend Ideabrowser.com for insane validated startup ideas and prompts to build your ideas) The distance between "I have an idea" and "someone is paying for it" has never been shorter, but not for the reasons most people think....

The right startup idea can change your life's trajectory. It did mine. But sometimes the best startup ideas aren't the ones you think up. They're the ones other people are already begging for. Ideabrowser.com using AI agents to find them. And me and my team hand curate the best ideas/trends so you can build your dream business. There is a free plan and launch pricing won't last forever if you want to lock it in. Steal your next idea this weekend from Ideabrowser.com Lock in launch pricing...

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Announcement: The right startup idea can change your life's trajectory. It did mine. But sometimes the best startup ideas aren't the ones you think up. They're the ones other people are already begging for. Ideabrowser.com using AI agents to find them. And me and my team hand curate the best ideas/trends so you can build your dream business. There is a free plan and launch pricing won't last forever if you want to lock it in. Steal your next idea from Ideabrowser.com Lock in launch pricing...