AI researcher, podcast host
Everything Lex personally uses, recommends, or has created — plus things they don't recommend — sourced from their own show and appearances on other podcasts.
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"I should say, going to Perplexity here, Sebastian Raschka is a machine learning researcher and author known for several influential books."
"my search bar was literally just hooking up WhatsApp to cloud code"
"And switch to Spotify. Switch to streaming, and basically, rebuild the stash of playlists and all this kind of stuff."
"Why do I need my Eight Sleep app to control my bed when I can tell the agent to... The agent already knows where I am, so he can turn off what I don't use."
"I use basically half-and-half Cursor and Claude Code, because they're fundamentally different experiences and both are useful."
"And somebody sent a pull request for Discord support"
"As a general purpose model, Opus is the best. For OpenClaw, Opus is extremely good in terms of role play."
"And I just typed, 'Convert this and this part to Zig,' and then let Codex run off"
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All episodes →Vikings, Ragnar, Berserkers, Valhalla & the Warriors of the Viking Age | Lex Fridman Podcast #495
Rick Beato: Greatest Guitarists of All Time, History & Future of Music | Lex Fridman Podcast #492
Khabib vs Lex: Training with Khabib | FULL EXCLUSIVE FOOTAGE
OpenClaw: The Viral AI Agent that Broke the Internet - Peter Steinberger | Lex Fridman Podcast #491
State of AI in 2026: LLMs, Coding, Scaling Laws, China, Agents, GPUs, AGI | Lex Fridman Podcast #490
"On Mastodon and Bluesky, I don't... I also use it less because oftentimes I got attacked for my blog posts."
"On Mastodon and Bluesky, I don't... I also use it less because oftentimes I got attacked for my blog posts."
"If you use SwiftUI, like the latest and greatest at Apple, and took them forever to build something to show an image from the web. Now we have async image, but some images would just not show up or be very slow."
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"So going to Perplexity. Canute the Great was an early 11th century Danish ruler who became king of England, Denmark and Norway."
"I now use, I think Perplexity or Brave as providers because Google really doesn't make it easy to use Google without Google."
"I should say, going to Perplexity here, Sebastian Raschka is a machine learning researcher and author known for several influential books."
"Let me look this up on Perplexity: what are the technologies we modern humans have that the Mashco Piro do not?"
"Looking it up on Perplexity, real numbers include all the numbers that can be represented on the number line"
"So here, going to Perplexity, Django Reinhardt was, of course, a jazz guitarist and composer, active mainly in France."
"I've never used Pro Tools. I've used REAPER, I've used Studio One, that's the most recent that I've used that."
"And switch to Spotify. Switch to streaming, and basically, rebuild the stash of playlists and all this kind of stuff."
"And Pandora, I used a lot. Pandora is more prioritizing on the discovery part versus organization part. And that was really wonderful."
"This is gonna be embarrassing. Yeah. I use BIAS FX. I'm sorry."
"And for the most time I've used Ableton Live. I feel like I'm using 1% of the power of the tool."
"I've never used Pro Tools. I've used REAPER, I've used Studio One, that's the most recent that I've used that."
"I think two MacBooks are real. The main one that drives the two big screens, and there's another MacBook that I sometimes use for testing."
"I use basically half-and-half Cursor and Claude Code, because they're fundamentally different experiences and both are useful."
"like a hobby, just as cursor or perplexity"
"my search bar was literally just hooking up WhatsApp to cloud code"
"For me personally, since we're talking about coding, and you mentioned debugging... the source of enjoyment for me, more on the Cursor side than Claude Code, is that I have a friend, I have a pair programmer."
"I built some agentic browser use in there. And, I mean, it's basically Playwright with a bunch of extras to make it easier for agents."
"That was back when we had GPT-4.1, with the one million context window"
"TypeScript is really good. Sometimes the types can get really confusing and the ecosystem is a jungle. So for web stuff it's good. I wouldn't build everything in it."
"If it's something where I care about performance a lot then it's a really interesting language. And agents got so much better over the last six months from not really good to totally valid choice."
"I have this wide Dell that's anti-glare and you can just fit a lot of terminals side-by-side."
"And I just typed, 'Convert this and this part to Zig,' and then let Codex run off"
"I pulled in all the data and then just asked him questions like, 'What makes this friendship meaningful?'"
"Why do I need my Eight Sleep app to control my bed when I can tell the agent to... The agent already knows where I am, so he can turn off what I don't use."
"I was an Emacs person for a long time. Man, Emacs."
"I now use, I think Perplexity or Brave as providers because Google really doesn't make it easy to use Google without Google."
"In the last few years, many times I actually prefer Electron apps because they work and native apps often are lacking features."
"And somebody sent a pull request for Discord support"
"As a general purpose model, Opus is the best. For OpenClaw, Opus is extremely good in terms of role play."
"If you build something that does inference or goes into whole running model direction, Python, very good. But then if I build stuff in Python and I want a story where I can also deploy it on Windows, not a good choice."
"When I build simple CLIs, I like Go. I actually don't like Go. I don't like the syntax of Go. But the ecosystem is great, it works great with agents."
"On Mastodon and Bluesky, I don't... I also use it less because oftentimes I got attacked for my blog posts."
"If you use SwiftUI, like the latest and greatest at Apple, and took them forever to build something to show an image from the web. Now we have async image, but some images would just not show up or be very slow."
"On Mastodon and Bluesky, I don't... I also use it less because oftentimes I got attacked for my blog posts."
"Reading Meditations is also just an insight into the mind of a man who's to himself, 'cause Meditations is not supposed to be work that's published. It's just a diary."
"You don't need a Mac Mini to install OpenClaw. There's ways. But it really does not need to be a Mac. Use the opportunity to get yourself a new MacBook or whatever computer you use and use the old one as your server instead of buying a standalone Mac Mini."
"First is Build a Large Language Model from Scratch and Build a Reasoning Model from Scratch. I truly believe in the machine learning world, the best way to learn and understand something is to build it yourself from scratch."
"First is Build a Large Language Model from Scratch and Build a Reasoning Model from Scratch. I truly believe in the machine learning world, the best way to learn and understand something is to build it yourself from scratch."
"You should follow him on Instagram, Life with Dan. He's an incredible wildlife photographer."
"He has a new book coming out in a few days titled Jungle Keeper that you should definitely go pre-order now."
"If you would like to support Paul and his team in their mission to protect the jungle, go to junglekeepers.org."
"checking out the gala that Paul is hosting in New York on January 22nd in a few days."
"And everybody, go pre-order The Jungle Keeper, the book, available everywhere."
"And now, let me leave you with some words from the Volsunga Saga, a 13th century Icelandic prose epic that tells the story of the Volsunga clan, a legendary Norse dynasty of heroes and dragon slayers."
"There's these, I would say, incredible apps like Suno, Udio. ElevenLabs Music is also great. They can generate basically text to song, full song from a text prompt."
"There's these, I would say, incredible apps like Suno, Udio. ElevenLabs Music is also great. They can generate basically text to song, full song from a text prompt."
"I'll mention to you offline, so the whole iZotope RX group of software that does a lot of the de-noising, all the removing the wind, all the, they integrate machine learning extremely effectively for working with audio in different kinds of ways."
"There's these, I would say, incredible apps like Suno, Udio. ElevenLabs Music is also great. They can generate basically text to song, full song from a text prompt."
"I mocked myself here, so just added... using GROQ to add more screens."
"talks to you through Telegram, WhatsApp, Signal, iMessage"
"You can be creative and think of the Cerebras deal and how that would translate into speed."
"you're able to talk to it using WhatsApp, Telegram, Discord"
"It felt like Factorio times infinite"
"talks to you through Telegram, WhatsApp, Signal, iMessage"
"So I checked out the header of the file and it found that it was, like, opus so I used ffmpeg to convert it"
"I wanted to change it to Rust and... I mean, I can do it"
"For most of my life I've been a Linux, Windows and WSL1, WSL2 person"
"Why do you need MyFitnessPal when the agent already knows where I am? So it can assume that I make bad decisions when I'm at Waffle House."
"Mitchell Hashimoto builds Ghostly, the terminal, and he has a really good community where there's so many other projects."
"creator of OpenClaw, formerly known as MoldBot"
"But then I found the OpenAI key and just used Curl to send the file to OpenAI to translate"
"Even Tailwind, they're used by everyone. Everyone uses Tailwind, right? And then they had to cut off 75% of the employees because they're not making money because nobody's going on the website anymore because it's all done by agents."
"Uses whatever AI model you like, including Claude Opus 4.6 and GPT 5.3 Codex"
"Not to be confused with Claude, the AI model from Anthropic, spelled with a U"
"Many people are calling this one of the biggest moments in the recent history of AI, since the launch of ChatGPT in November 2022"
"other things like, I don't know, Anthropic's Claude is locked in into their space"
"and then I wanted to use whisper but it didn't had it installed"
"Nathan is the post-training lead at the Allen Institute for AI, author of the definitive book on Reinforcement Learning from Human Feedback."
"If you look at the browser, Chrome. If I wanted to add a feature, if I wanted to have tabs as opposed to up top, I want them on the left side"
"This happened about a year ago in January 2025, when the open-weight Chinese company DeepSeek released DeepSeek R1, that I think it's fair to say surprised everyone with near-state-of-the-art performance, with allegedly much less compute for much cheaper."
"He gave me this book that he has recently written, Echoes from Eden. Signed it."
"One of your more controversial ideas in mathematics as laid out in the paper, The Set-Theoretic Multiverse, you describe that there may not be one true mathematics, but rather multiple mathematical universes."
"MathOverflow, by the way, is like StackOverflow but for research mathematicians."
"He is the number one highest rated user on MathOverflow, which I think is a legendary accomplishment. MathOverflow, by the way, is like StackOverflow but for research mathematicians."
"He is also the author of several books, including Proof and the Art of Mathematics and Lectures on the Philosophy of Mathematics."
"He is also the author of several books, including Proof and the Art of Mathematics and Lectures on the Philosophy of Mathematics."
"And he has a great blog, infinitelymore.xyz."
"LMNT is my go to zero sugar electrolyte drink and has been for many years. I bring these LMNT packets everywhere I go. It helps me replenish electrolytes I lose in training and fasting."
"LMNT, for electrolytes"
"BetterHelp, for mental health"
"Shopify, for selling stuff online"
"We've got Uplift Desk, for my favorite office desks"
"Fin, for customer service AI agents"