Lex Fridman(@lexfridman)

Here's the links for my conversation with historian Lars Brownworth all about the Vikings. YouTube:...

Lex Fridman (@lexfridman) — Thu, 09 Apr 2026 17:56:46 GMT

Here's the links for my conversation with historian Lars Brownworth all about the Vikings.

YouTube: youtube.com/watch?v=iKx3gA…

Spotify: open.spotify.com/show/2MAi0BvDc…

Podcast: lexfridman.com/podcast

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Here's my conversation with historian Lars Brownworth all about the Vikings, from the start of the V...

Lex Fridman (@lexfridman) — Thu, 09 Apr 2026 17:56:45 GMT

Here's my conversation with historian Lars Brownworth all about the Vikings, from the start of the Vikings Age to the conquest of Europe and beyond. This was an epic & mind-blowing conversation.

It's here on X in full and is up everywhere else (see comment).

Timestamps:
00 - Episode highlight
17 - Introduction
37 - The start of the Viking Age
30 - Viking military strategy, tactics & technology
13 - Ragnar Lothbrok
40 - The Great Heathen Army
23 - Rollo and Normandy
34 - Viking religion and Valhalla
01:06 - Viking explorers
06:13 - Vikings in North America
19:35 - Vikings in the East
39:14 - Byzantine Empire
47:57 - History and human nature

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This life is fucking amazing. I'm so grateful to be alive, with all of you on this miracle of a plan...

Lex Fridman (@lexfridman) — Tue, 07 Apr 2026 01:23:40 GMT

This life is fucking amazing. I'm so grateful to be alive, with all of you on this miracle of a planet. 

Oh and I'm sorry if I fuck things up sometimes. I'm a flawed human. But I promise to do whatever I can to try to add some more understanding and love to this world. 

After the world leader convos I get attacked intensely by all sides, and many disparate online communities. It has led to some really low points for me mentally. But I don't matter. I'm listening. I'll do better. And I'll try to find the strength to do more of them, always with rigor and backbone, seeking to truly understand. And despite accusations, I do extremely high amounts of research, sometimes 100+ hours for a conversation. Ask many of my previous guests. But when I come to the table, I put all that aside, and make it all about the other person. I don't ever try to sound smart. I know the vastness of my ignorance. But I'm trying. Sometimes I do fuck up and sound like a douche, or do something incredibly cringe. And I hate myself right after. But I'd rather fail and embarrass myself a million times, than not do what my heart says is right.

And besides world leaders, historians, CEOs, engineers, etc, this year I want to travel the world and talk to a lot more everyday people on and off the mic. This is something I've wanted to do for a long time.

Anyway this is written while on I'm on a 10 mile run, probably procrastinating, since to type I have to walk and not run 🤣

But I did just get stopped by a super smart and kind girl who works at a humanoid robotics company here. And she asked if she can give me a hug to thank me for being me. Sometimes the universe sends you a message that even a dumb dude like me can almost hear. I really needed that today. Thank you for the hug and the kindness  🙏  I'm just hoping she was real and I didn't just imagine that 🤣 Then again if I went full crazy might as well enjoy it!

Back to the run. I love you all! ❤️

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Same, I have a similar setup. A mix of Obsidian, Cursor (for md), and vibe-coded web terminals as fr...

Lex Fridman (@lexfridman) — Thu, 02 Apr 2026 23:06:21 GMT

Same, I have a similar setup. A mix of Obsidian, Cursor (for md), and vibe-coded web terminals as front-end.

Since I do a podcast, the number/diversity of research interests is very large. But the knowledge-base approach has been working great.

For answers, I often have it generate dynamic html (with js) that allows me to sort/filter data and to tinker with visualizations interactively.

Another useful thing is I have the system generate a temporary focused mini-knowledge-base for a particular topic that I then load into an LLM for voice-mode interaction on a long 7-10 mile run. So it becomes an interactive podcast while I run, where I ask it questions and listen to the answers to learn more.

Anyway, heading out for a run now, thanks for the write-up 👊

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Humans just launched into space, on their way to the moon (flyby around it). It'll be farthest human...

Lex Fridman (@lexfridman) — Wed, 01 Apr 2026 22:36:18 GMT

Humans just launched into space, on their way to the moon (flyby around it). It'll be farthest humans have ever traveled into deep space 🤯 Congrats to all the incredible engineers & teams involved! LFG!!!!!!!

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Here's the links for my conversation with Jensen Huang, CEO of NVIDIA: YouTube: https://t.co/cC5nUi...

Lex Fridman (@lexfridman) — Mon, 23 Mar 2026 16:50:00 GMT

Here's the links for my conversation with Jensen Huang, CEO of NVIDIA:

YouTube: youtube.com/watch?v=vif8NQ…

Spotify: open.spotify.com/show/2MAi0BvDc…

Podcast: lexfridman.com/podcast

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Here's my conversation with Jensen Huang, CEO of NVIDIA, the most valuable & one of the most influen...

Lex Fridman (@lexfridman) — Mon, 23 Mar 2026 16:49:58 GMT

Here's my conversation with Jensen Huang, CEO of NVIDIA, the most valuable & one of the most influential companies in the history of human civilization. It is the engine powering the AI revolution.

This was a fascinating & inspiring conversation, in parts super-technical on engineering of every part of the AI stack, memory, power, supply chain (TSMC, ASML, etc), in parts about leadership & psychology, and in parts personal & philosophical about life, consciousness, mortality, and human nature.

It's here on X in full and is up everywhere else (see comment).

Timestamps:
00 - Introduction
33 - Extreme co-design and rack-scale engineering
18 - How Jensen runs NVIDIA
40 - AI scaling laws
40 - Biggest blockers to AI scaling laws
23 - Supply chain
18 - Memory
24 - Power
43 - Elon and Colossus
11 - Jensen's approach to engineering and leadership
01:37 - China
09:50 - TSMC and Taiwan
15:04 - NVIDIA's moat
20:41 - AI data centers in space
24:30 - Will NVIDIA be worth $10 trillion?
34:39 - Leadership under pressure
48:25 - Video games
55:16 - AGI timeline
57:29 - Future of programming
11:01 - Consciousness
17:22 - Mortality

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It was an honor to hang out with Jensen Huang, CEO of @nvidia, and do a long-form podcast with him. ...

Lex Fridman (@lexfridman) — Sun, 22 Mar 2026 21:39:49 GMT

It was an honor to hang out with Jensen Huang, CEO of @nvidia, and do a long-form podcast with him. Really fun & fascinating technical deep-dive conversation on & off the mic. One of the most brilliant & thoughtful human beings I've ever met. NVIDIA is the most valuable company in the world by market cap and is the engine powering the AI revolution.

Podcast probably out tomorrow (Monday) unless I get stuck in too many interesting conversations while running around in SF ;-)

PS: I haven't checked my messages in days. Sorry for slow replies 🙏 Trying to stay deeply focused at in overwhelmingly intense time & barely hanging on. Love you all ❤️

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Here's the links for my conversation with Jeff Kaplan: YouTube: https://t.co/bsaWzAvRIQ Spotify: ht...

Lex Fridman (@lexfridman) — Wed, 11 Mar 2026 21:44:28 GMT

Here's the links for my conversation with Jeff Kaplan:
YouTube: youtube.com/watch?v=H9rF1C…

Spotify: open.spotify.com/show/2MAi0BvDc…

Podcast: lexfridman.com/podcast

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Here's my conversation with Jeff Kaplan, a legendary Blizzard game designer of World of Warcraft and...

Lex Fridman (@lexfridman) — Wed, 11 Mar 2026 21:44:27 GMT

Here's my conversation with Jeff Kaplan, a legendary Blizzard game designer of World of Warcraft and Overwatch, which are two of the biggest, most influential games ever made. Jeff is one of the most genuine & awesome human beings I've ever met: kind, thoughtful, hilarious, and still & forever a gamer through and through.

This was a truly fun & inspiring conversation. We talk about it all: the lows, the highs, the memes, the details of the game design process, and the new game he's been secretely working on: The Legend of California. I got a chance to play the game with Jeff, and it's incredibly beautiful (and fun). You can wishlist it on Steam now. I can't wait to play it with all of you!

Conversation is here on X in full and is up everywhere else (see comment).

Timestamps:
00 - Episode highlight
27 - Introduction
07 - Early games: Pac-Man, Zork, Doom, Quake
33 - Writing career - 170 rejection letters
06 - EverQuest obsession
04 - Getting hired at Blizzard
02:32 - Lowest point in Jeff's life
08:37 - One of Us
12:54 - Early Blizzard culture
32:36 - Building World of Warcraft
50:20 - How WoW changed video games
07:42 - Single-player vs Multi-player
28:35 - How Blizzard made great video games
54:25 - Online toxicity
01:59 - Why Titan failed
19:09 - Overwatch in six weeks
46:07 - Best Overwatch heroes
54:37 - The challenge of matchmaking
58:01 - Rust
08:22 - Why Jeff left Blizzard
30:35 - Diablo IV
32:03 - Getting back to making video games
40:59 - The Legend of California
54:44 - Greatest video game of all time
02:51 - AI and future of video games

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My conversation with Peter Steinberger (@steipete) is now translated & dubbed into German. Huge th...

Lex Fridman (@lexfridman) — Wed, 04 Mar 2026 00:08:45 GMT

My conversation with Peter Steinberger (@steipete) is now translated & dubbed into German. 

Huge thank you to ElevenLabs (@elevenlabs) and @matiii for making it happen.

It's available here and on YouTube where you can switch audio tracks by clicking the gear icon > Audio Tracks > select German.

I have a lot of hope for this application of AI to break down barriers that language creates, and no one does it better than @elevenlabs. The whole ElevenLabs team has been really fun & inspiring to work with.

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Here's the links for my conversation with Rick Beato (@rickbeato): YouTube: https://t.co/fNnCihaYfZ...

Lex Fridman (@lexfridman) — Sun, 01 Mar 2026 06:07:19 GMT

Here's the links for my conversation with Rick Beato (@rickbeato):

YouTube: youtube.com/watch?v=1SJiTw…

Spotify: open.spotify.com/show/2MAi0BvDc…

Podcast: lexfridman.com/podcast

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Here's my conversation with Rick Beato (@rickbeato), a musician, music educator, producer, songwrite...

Lex Fridman (@lexfridman) — Sun, 01 Mar 2026 06:07:18 GMT

Here's my conversation with Rick Beato (@rickbeato), a musician, music educator, producer, songwriter, and host of a YouTube channel that celebrates great musicians & musical ideas, and helps millions of people fall in love with great music all over again.

It's here on X in full and is up everywhere else (see comment).

Timestamps:
00 - Introduction
44 - Guitar solos
43 - Gypsy jazz and Django Reinhardt
14 - Bebop jazz
27 - Perfect pitch vs relative pitch
04 - Learning to play guitar
34 - Miles Davis
01 - Bass guitar
08 - Greatest guitar solos of all time
14:23 - 27 Club
19:04 - Elton John
22:18 - Metallica
26:48 - Tom Waits
32:39 - Greatest rock stars
36:02 - Beethoven
42:37 - Bach
45:27 - AI in music
59:18 - Sabrina Carpenter
02:49 - YouTube copyright strikes
08:26 - Spotify
19:18 - Guitars
23:40 - Advice

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It's also on YouTube: https://t.co/OlmRMw9VgV

Lex Fridman (@lexfridman) — Wed, 25 Feb 2026 23:06:09 GMT

It's also on YouTube:
youtube.com/watch?v=KGVpKP…

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Here's a video of me training with Khabib Nurmagomedov (@TeamKhabib), one of the greatest fighters o...

Lex Fridman (@lexfridman) — Wed, 25 Feb 2026 23:06:08 GMT

Here's a video of me training with Khabib Nurmagomedov (@TeamKhabib), one of the greatest fighters of all time and a great human being. This was truly an honor for me 🙏

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The power of AI agents comes from: 1. intelligence of the underlying model 2. how much access you gi...

Lex Fridman (@lexfridman) — Tue, 17 Feb 2026 01:40:18 GMT

The power of AI agents comes from:
1. intelligence of the underlying model
2. how much access you give it to all your data
3. how much freedom & power you give it to act on your behalf

I think for 2 & 3, security is the biggest problem. And very soon, if not already, security will become THE bottleneck for effectiveness and usefulness of AI agents as a whole (1-3), since intelligence is still rapidly scaling and is no-longer an obvious bottleneck for many use-cases.

The more data & control you give to the AI agent: (A) the more it can help you AND (B) the more it can hurt you.

A lot of tech-savvy folks are in yolo mode right now and optimizing for the former (A - usefulness) over the the latter (B - pain of cyber attacks, leaked data, etc).

I think solving the AI agent security problem is the big blocker for broad adoption. And of course, this is a specific near-term instance of the broader AI safety problem.

All that said, this is a super exciting time to be alive for developers. I constantly have agent loops running on programming & non-programming tasks. I'm actively using Claude Code, Codex, Cursor, and very carefully experimenting with OpenClaw. The only down-side is lack of sleep, and an anxious feeling that everyone feels of always being behind of latest state-of-the-art. But other than that, I'm walking around with a big smile on my face, loving life 🔥❤️

PS: By the way, if your intuition about any of the above is different, please lay out your thoughts on it. And if there are cool projects/approaches I should check out, let me know. I'm in full explore/experiment mode.

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It might be the caffeine speaking, but I love you all ❤️ Happy Valentine's day you sexy mf'ers. I'...

Lex Fridman (@lexfridman) — Sat, 14 Feb 2026 19:15:01 GMT

It might be the caffeine speaking, but I love you all ❤️

Happy Valentine's day you sexy mf'ers.

I'm writing this at a coffeeshop. Rain outside. A first date happening next to me, I'm hoping they make it.

I'm feeling happy & grateful for all of this, human civilization, life on Earth, a spinning rock in space. There are 100-400 billion other planets in our galaxy alone. And there are ~2 trillion galaxies in just the observable universe.

And somehow we have a chance to crack open the mysteries of the universe, to solve physics, biology, intelligence, to understand our own mind, to travel out toward the stars.

And at the same time, we often bicker about the stupidest shit. The whole thing is hilarious and beautiful.

All of this is a miracle ❤️

PS: It's definitely the caffeine speaking 🤣

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Here's the links for my conversation with Peter Steinberger (@steipete), creator of OpenClaw: YouTu...

Lex Fridman (@lexfridman) — Thu, 12 Feb 2026 03:17:20 GMT

Here's the links for my conversation with Peter Steinberger (@steipete), creator of OpenClaw:

YouTube: youtube.com/watch?v=YFjfBk…

Spotify: open.spotify.com/show/2MAi0BvDc…

Podcast: lexfridman.com/podcast

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Here's my conversation with Peter Steinberger (@steipete), creator of OpenClaw, an open-source AI ag...

Lex Fridman (@lexfridman) — Thu, 12 Feb 2026 03:17:18 GMT

Here's my conversation with Peter Steinberger (@steipete), creator of OpenClaw, an open-source AI agent that has taken the Internet by storm, with now over 180,000 stars on GitHub.

This was a truly mind-blowing, inspiring, and fun conversation!

It's here on X in full and is up everywhere else (see comment).

Timestamps:
00 - Episode highlight
30 - Introduction
36 - OpenClaw origin story
55 - Mind-blowing moment
22 - Why OpenClaw went viral
19 - Self-modifying AI agent
04 - Name-change drama
15 - Moltbook saga
34 - OpenClaw security concerns
01:14 - How to code with AI agents
32:09 - Programming setup
38:52 - GPT Codex 5.3 vs Claude Opus 4.6
47:59 - Best AI agent for programming
09:59 - Life story and career advice
13:56 - Money and happiness
17:49 - Acquisition offers from OpenAI and Meta
34:58 - How OpenClaw works
46:17 - AI slop
52:20 - AI agents will replace 80% of apps
00:57 - Will AI replace programmers?
12:57 - Future of OpenClaw community

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Programming is now 10x more fun with AI.

Lex Fridman (@lexfridman) — Tue, 10 Feb 2026 19:28:15 GMT

Programming is now 10x more fun with AI.

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Also, I really need help with podcast team/hiring 😰 For example, I'm currently editing, translating...

Lex Fridman (@lexfridman) — Thu, 05 Feb 2026 20:25:31 GMT

Also, I really need help with podcast team/hiring 😰 For example, I'm currently editing, translating the Khabib podcast & training footage, and jungle video with Paul.

I've been terribly slow on hiring, allocating no time to it. My resolution for 2026 is to actually make time to look through applications & interview people.

So if you're a great editor, videographer, translator, or someone who can help make sure stuff runs on time as team manager/assistant please apply:lexfridman.com/hiring/R

Some context: We have a tiny team, and I do all the prep, guest comms, production myself. I'm fine doing all that (it's more raw & human that way), but the post-production I can definitely use help with. Among other things, it's just more fun to work on creative projects with a team.

Also, outside of hiring, if you just want to hang out, have guest suggestions, or questions, go to:lexfridman.com/contactL

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Claude Opus 4.6 & GPT Codex 5.3 out today, and OpenClaw recently. And I'm sure xAI/Grok & Google/Gem...

Lex Fridman (@lexfridman) — Thu, 05 Feb 2026 20:25:26 GMT

Claude Opus 4.6 & GPT Codex 5.3 out today, and OpenClaw recently. And I'm sure xAI/Grok & Google/Gemini will soon be out with more. What an exciting time to build stuff!

I'm walking around with a smile, happy & sleep-deprived 🤣

Next week, I'll come to SF/Bay Area for a few days/weeks/months to hang out & build some stuff ;-)

Looking to focus on programming, and contribute to good engineering teams. But occasionally socialize, in as much as my introvert brain allows.

2026 is going to be fun (and wild), LFG!

PS: I'm doing a deep-dive podcast on OpenClaw with its creator (@steipete) soon. Let me know if you have questions.

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I'm thinking of going to SF/Bay Area for 1-2 months, to work among a bunch of very productive folks ...

Lex Fridman (@lexfridman) — Mon, 02 Feb 2026 03:50:34 GMT

I'm thinking of going to SF/Bay Area for 1-2 months, to work among a bunch of very productive folks (in AI/programming).

Should I? If yes, what's the best SF/Bay Area neighborhood to stay in? No agenda, I just like to be around people who are super-hyped to build stuff.

Downside is it's a bit distracting, too much going on. I'm in danger of getting pulled into too many fascinating conversation. I like socializing a bit, but to spend 95%+ of my time focusing deeply on work (single task) for long periods of time, and I have a lot of stuff on my to-do list to get done. So that's the tension.

I'll probably delete this in a bit, just posting this while running to help me brainstorm with myself. Thanks, happy Sunday runday ❤️

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Here's the links for my conversation all about AI with Nathan (@natolambert) and Sebastian (@rasbt):...

Lex Fridman (@lexfridman) — Sat, 31 Jan 2026 23:03:56 GMT

Here's the links for my conversation all about AI with Nathan (@natolambert) and Sebastian (@rasbt):

YouTube: youtube.com/watch?v=EV7WhV…

Spotify: open.spotify.com/show/2MAi0BvDc…

Podcast: lexfridman.com/podcast

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Here's my conversation all about AI in 2026, including technical breakthroughs, scaling laws, closed...

Lex Fridman (@lexfridman) — Sat, 31 Jan 2026 23:03:55 GMT

Here's my conversation all about AI in 2026, including technical breakthroughs, scaling laws, closed & open LLMs, programming & dev tooling (Claude Code, Cursor, etc), China vs US competition, training pipeline details (pre-, mid-, post-training), rapid evolution of LLMs, work culture, diffusion, robotics, tool use, compute (GPUs, TPUs, clusters), continual learning, long context, AGI timelines (including how stuff might go wrong), advice for beginners, education, a LOT of discussion about the future, and other topics.

It's a great honor and pleasure for me to be able to do this kind of episode with two of my favorite people in the AI community:
Sebastian Raschka (@rasbt)
Nathan Lambert (@natolambert)

They are both widely-respected machine learning researchers & engineers who also happen to be great communicators, educators, writers, and X posters.

This was a whirlwind conversation: everything from the super-technical to the super-fun.

It's here on X in full and is up everywhere else (see comment).

Timestamps:
00 - Introduction
57 - China vs US: Who wins the AI race?
38 - ChatGPT vs Claude vs Gemini vs Grok: Who is winning?
38 - Best AI for coding
29 - Open Source vs Closed Source LLMs
08 - Transformers: Evolution of LLMs since 2019
05 - AI Scaling Laws: Are they dead or still holding?
04:12 - How AI is trained: Pre-training, Mid-training, and Post-training
37:18 - Post-training explained: Exciting new research directions in LLMs
58:11 - Advice for beginners on how to get into AI development & research
21:03 - Work culture in AI (72+ hour weeks)
24:49 - Silicon Valley bubble
28:46 - Text diffusion models and other new research directions
34:28 - Tool use
38:44 - Continual learning
44:06 - Long context
50:21 - Robotics
59:31 - Timeline to AGI
06:47 - Will AI replace programmers?
25:18 - Is the dream of AGI dying?
32:07 - How AI will make money?
36:29 - Big acquisitions in 2026
41:01 - Future of OpenAI, Anthropic, Google DeepMind, xAI, Meta
53:35 - Manhattan Project for AI
00:10 - Future of NVIDIA, GPUs, and AI compute clusters
08:15 - Future of human civilization

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I got to train with Khabib Nurmagomedov (@TeamKhabib) yesterday. This was an honor of a lifetime for...

Lex Fridman (@lexfridman) — Thu, 22 Jan 2026 17:55:58 GMT

I got to train with Khabib Nurmagomedov (@TeamKhabib) yesterday. This was an honor of a lifetime for me. He's a great fighter & leader and a great human being.

From a grappling perspective, I don't think I've ever experienced this much top pressure in my life.

I'll post the footage of the training in a few days. And also we'll do a long podcast (and dub it in multiple languages).

In general, it was an incredible experience to train with the team and get to know many of the fighters from Dagestan. All are great people.

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"We are all in the gutter, but some of us are looking at the stars." - Oscar Wilde

Lex Fridman (@lexfridman) — Sun, 18 Jan 2026 21:35:15 GMT

"We are all in the gutter, but some of us are looking at the stars." - Oscar Wilde

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Here's my conversation with Paul Rosolie, his 3rd time on the podcast, about his intense recent expe...

Lex Fridman (@lexfridman) — Tue, 13 Jan 2026 20:42:58 GMT

Here's my conversation with Paul Rosolie, his 3rd time on the podcast, about his intense recent experience in the Amazon Jungle of a full-on encounter with the warriors of an uncontacted tribe. We show never-before-seen footage of this encounter. It's one of the most incredible things I've ever seen, and the whole story is fascinating.

Long-form video upload on X doesn't seem to be working at the moment, so only YouTube, Spotify, RSS for now:

YouTube: youtube.com/watch?v=Z-FRe5…

Spotify: open.spotify.com/show/2MAi0BvDc…

Podcast: lexfridman.com/podcast

Timestamps:
00 - Episode highlight
08 - Introduction
59 - Uncontacted tribes in the Amazon Jungle
45 - Intense recent encounter
51 - Never-before-seen footage of tribe warriors
07 - The mysteries of the jungle
02:42 - Tribe's diet: Monkeys, turtles, and turtle eggs
12:18 - Jane Goodall
18:30 - Advice for young people
27:44 - Cartel, Narco-traffickers & assassination attempts
49:44 - Climbing the giant tree
00:42 - Giant anaconda
18:00 - Rescuing a spider monkey
24:04 - Dangerous animal encounters
34:12 - Writing, journaling, and great writer inspirations

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I stand with the people of Iran 👊❤️ I have a lot of Iranian friends, including my childhood best f...

Lex Fridman (@lexfridman) — Sat, 10 Jan 2026 23:09:50 GMT

I stand with the people of Iran 👊❤️

I have a lot of Iranian friends, including my childhood best friend. Amazing people.

It's one of the great cultures and peoples in the history of the world.

Stay strong ❤️

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Doing a long, super-technical podcast on the state-of-the-art in AI. Let me know if you have questio...

Lex Fridman (@lexfridman) — Sat, 03 Jan 2026 18:26:11 GMT

Doing a long, super-technical podcast on the state-of-the-art in AI. Let me know if you have question, topic suggestions. Everything from details of LLM training pipeline & architectures, to coding, robotics, scaling, compute, business, geopolitics, etc. 

Besides topics & questions... add papers, blogs, posts, rants, perspectives that you'd like to see covered.

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Here's the links for my conversation with Joel David Hamkins (@JDHamkins): YouTube: https://t.co/VY...

Lex Fridman (@lexfridman) — Wed, 31 Dec 2025 21:41:23 GMT

Here's the links for my conversation with Joel David Hamkins (@JDHamkins):

YouTube: youtube.com/watch?v=14OPT6…

Spotify: open.spotify.com/show/2MAi0BvDc…

Podcast: lexfridman.com/podcast

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First, Happy New Year everyone! It's been a wild ride. I can't wait for 2026, LFG! I love you all! ...

Lex Fridman (@lexfridman) — Wed, 31 Dec 2025 21:41:22 GMT

First, Happy New Year everyone! It's been a wild ride. I can't wait for 2026, LFG! I love you all! ❤️

Second, here's my conversation with Joel David Hamkins (@JDHamkins), mathematician and philosopher specializing in set theory, the foundations of mathematics, and the nature of infinity. We talk about paradoxes that challenged some of the greatest mathematicians of the 20th century, Gödel Incompleteness theorems, the mathematical multiverse, the nature of truth, computation, and much more.

By the way, Joel is the #1 highest-rated user on MathOverflow, and writes a great blog called "Infinitely More".

It's here on X in full and is up everywhere else (see comment).

Timestamps:
00 - Introduction
17 - Infinity & paradoxes
27 - Russell's paradox
02:35 - Gödel's incompleteness theorems
20:06 - Truth vs proof
31:30 - The Halting Problem
47:23 - Does infinity exist?
04:57 - MathOverflow
08:49 - The Continuum Hypothesis
18:36 - Hardest problems in mathematics
28:03 - Mathematical multiverse
46:55 - Surreal numbers
57:33 - Conway's Game of Life
59:49 - Computability theory
09:41 - P vs NP
12:58 - Greatest mathematicians in history
26:43 - Infinite chess
45:01 - Most beautiful idea in mathematics

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Merry Christmas! Love you all ❤️

Lex Fridman (@lexfridman) — Thu, 25 Dec 2025 19:45:50 GMT

Merry Christmas! Love you all ❤️

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Long hike in LA hills with @hubermanlab, one of my favorite humans (& best friends) on Earth. I enj...

Lex Fridman (@lexfridman) — Tue, 16 Dec 2025 18:26:02 GMT

Long hike in LA hills with @hubermanlab, one of my favorite humans (& best friends) on Earth.

I enjoy hikes where you can be in nature and still, at some high-elevation points, see the city in the distance below. In those moments, it all seems so surreal. How did we clever humans build all of that? We went from hunter-gatherers to a civilization that can space travel and has a chance to colonize other planets and reach out toward the stars 🤯

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Also, here's a Neurips pic for the memes, with Dylan and Nathan. Both are super-interesting voices i...

Lex Fridman (@lexfridman) — Sun, 14 Dec 2025 19:11:04 GMT

Also, here's a Neurips pic for the memes, with Dylan and Nathan. Both are super-interesting voices in the AI world whose writing everyone should follow. We did a great AI-focused podcast episode last year, and will probably do many more.
Nathan Lambert: @natolambert (@interconnectsai)
Dylan Patel: @dylan522p (@SemiAnalysis_)
Podcast: youtube.com/watch?v=_1f-o0…

Other people's writing & tweets I recommend:
@rasbt@cwolferesearch@dwarkesh_sp@swyx@simonw

There's many more I'm forgetting! Please give suggestions of technical folks I should follow & read.

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I spent last week at Neurips (the big ML/AI conference) and had hundreds of amazing technical conver...

Lex Fridman (@lexfridman) — Sun, 14 Dec 2025 19:11:03 GMT

I spent last week at Neurips (the big ML/AI conference) and had hundreds of amazing technical conversations with old friends and new. Beyond the technical, I'm deeply grateful for the love from all the folks who stopped me in the hallways and in the street to say kind words and share their research & life stories with me. Once again, I felt like the luckiest kid in the world.

I took a lot of notes at the conference, and will try to write up my takeaways, here on X and on a new Substack (see links below).

Additionally, I will likely do lecture(s) on the state-of-the-art in AI as I've done in the past. If this is interesting, please indicate your interest in the "topics & suggestions" form below (see links in reply).

I'm trying to get back to occasionally publishing in conferences & journals (because it's fun & makes me happy). As I said previously, grounding myself in engineering tasks many hours a day, humbles me to the reality of the world. For me, this is important to do regularly. I'm collaborating with a few incredible people at MIT and Caltech on human-robot interaction research, with humanoid and quadruped robots. It's a bit of an experiment to see if I can find the time to both do deep prep for each podcast episode (sometimes 100+ hours) and also do the serious research grind required to publish interesting papers. Like everything in life, when max effort is applied, even short-term "failure" leads to growth & lessons-learned, which is a win. So really, the only way to fail is to not try with max effort.

What a crazy life this is… Truly, I'm a lucky dude. I love you all ❤️

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Here are the links mentioned: New substack that I'll start posting on. Subscribe if you want occasi...

Lex Fridman (@lexfridman) — Sun, 14 Dec 2025 19:11:03 GMT

Here are the links mentioned:

New substack that I'll start posting on. Subscribe if you want occasional longer-form writing from me:
substack.com/@lexfridman

Form for updates, topics, suggestions, or to just send me a note:
lexfridman.com/updates-topics…

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Here's the links for my conversation with Irving Finkel: YouTube: https://t.co/4J9F3IL2tQ Spotify:...

Lex Fridman (@lexfridman) — Fri, 12 Dec 2025 21:25:59 GMT

Here's the links for my conversation with Irving Finkel:

YouTube: youtube.com/watch?v=_bBRVN…

Spotify: open.spotify.com/show/2MAi0BvDc…

Podcast: lexfridman.com/podcast

Substack: substack.com/@lexfridman
(will start publishing my thoughts on each episodes here soon)

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Here's my conversation with Irving Finkel, a scholar of ancient languages and Mesopotamian history. ...

Lex Fridman (@lexfridman) — Fri, 12 Dec 2025 21:25:58 GMT

Here's my conversation with Irving Finkel, a scholar of ancient languages and Mesopotamian history. He specializes in deciphering cuneiform tablets from Sumerian, Akkadian, Babylonian, and Assyrian contexts. He became widely known for studying a tablet with a Mesopotamian flood story that predates the biblical Noah narrative.

We talk about ancient writing & language, controversial theories about ancient civilizations, Noah's Ark, flood myths, Göbekli Tepe, and much more.

It's here on X in full and is up everywhere else (see comment).

Timestamps:
00 - Introduction
58 - Origins of human language
04 - Cuneiform
17 - Controversial theory about Göbekli Tepe
29 - How to write and speak Cuneiform
48 - Primitive human language
31 - Development of writing systems
25 - Decipherment of Cuneiform
57 - Limits of language
56 - Art of translation
06 - Gods
01:31 - Ghosts
11:19 - Ancient flood stories
21:26 - Noah's Ark
32:49 - The Royal Game of Ur
45:48 - British Museum
53:13 - Evolution of human civilization

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Here's the links for my conversation with Michael Levin (@drmichaellevin): YouTube: https://t.co/9i...

Lex Fridman (@lexfridman) — Sun, 30 Nov 2025 19:37:37 GMT

Here's the links for my conversation with Michael Levin (@drmichaellevin):

YouTube: youtube.com/watch?v=Qp0rCU…

Spotify: open.spotify.com/show/2MAi0BvDc…

Podcast: lexfridman.com/podcast

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Here's my conversation with Michael Levin (@drmichaellevin) about the nature of intelligence in biol...

Lex Fridman (@lexfridman) — Sun, 30 Nov 2025 19:37:36 GMT

Here's my conversation with Michael Levin (@drmichaellevin) about the nature of intelligence in biological systems, including unconventional & alien intelligence, agency, memory, consciousness, and life in all its forms here on Earth and beyond.

It's here on X in full and is up everywhere else (see comment).

Timestamps:
00 - Introduction
44 - Biological intelligence
17 - Living vs non-living organisms
30 - Origin of life
15 - The search for alien life (on Earth)
19 - Creating life in the lab - Xenobots and Anthrobots
04:21 - Memories and ideas are living organisms
18:02 - Reality is an illusion: The brain is an interface to a hidden reality
03:48 - Unexpected intelligence of sorting algorithms
29:26 - Can aging be reversed?
33:17 - Mind uploading
51:57 - Alien intelligence
06:52 - Advice for young people
13:21 - Questions for AGI

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View of Earth from 900 million miles away, with Saturn's rings in the image, taken by Cassini spacec...

Lex Fridman (@lexfridman) — Thu, 27 Nov 2025 18:32:31 GMT

View of Earth from 900 million miles away, with Saturn's rings in the image, taken by Cassini spacecraft.

That dot is us, all 8 billion of us. It's all an insanely lucky miracle.

I'm grateful for all of it & all of you. Love you all! ❤️

PS: Now, I'm off to partake in the great American Thanksgiving tradition of over-eating while getting into a heated philosophical argument with family 🤣

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Here's the links for my conversation with David Kirtley (@dekirtley): YouTube: https://t.co/eoU2Th3...

Lex Fridman (@lexfridman) — Mon, 17 Nov 2025 22:14:45 GMT

Here's the links for my conversation with David Kirtley (@dekirtley):

YouTube: youtube.com/watch?v=m_CFCy…

Spotify: open.spotify.com/show/2MAi0BvDc…

Podcast: lexfridman.com/podcast

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Here's my conversation with David Kirtley (@dekirtley), a nuclear fusion engineer, all about the phy...

Lex Fridman (@lexfridman) — Mon, 17 Nov 2025 22:14:43 GMT

Here's my conversation with David Kirtley (@dekirtley), a nuclear fusion engineer, all about the physics and engineering of nuclear fission, fusion, and the future of energy.

David is leading a team that's working to build the world's first commercial fusion power plant by 2028. This was a super technical conversation and a fascinating one, for both the near-term and the long-term future of human civilization.

It's here on X in full, and is up on YouTube, Spotify, and everywhere else. Links in comment.

Timestamps:
00 - Introduction
14 - Nuclear fission vs fusion
14 - Physics of E=mc^2
28 - Is nuclear fusion safe?
50 - Chernobyl
17 - Geopolitics
12 - Extreme scenarios
07 - How nuclear fusion works
11:59 - Extreme temperatures
17:00 - Fusion control and simulation
28:54 - Electricity from fusion
02:59 - First fusion power plant in 2028
09:52 - Energy needs of GPU clusters
20:16 - Kardashev scale
28:12 - Fermi Paradox

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@ThePrimeagen ❤️ Kinesis for life 👊

Lex Fridman (@lexfridman) — Sun, 09 Nov 2025 00:52:23 GMT

@ThePrimeagen ❤️ Kinesis for life 👊

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Links to contact me... Coffee form: https://t.co/KkuezrmjEa Guest suggestion form: https://t.co/DQ...

Lex Fridman (@lexfridman) — Wed, 05 Nov 2025 22:33:11 GMT

Links to contact me...

Coffee form:
lexfridman.com/coffee

Guest suggestion form:
lexfridman.com/guest-suggesti…

Contact for other reasons:
lexfridman.com/contact

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Over the past several weeks, I've been back in the lab working crazy hours like old times, and lovin...

Lex Fridman (@lexfridman) — Wed, 05 Nov 2025 22:33:11 GMT

Over the past several weeks, I've been back in the lab working crazy hours like old times, and loving life. This was much needed. I'm happy ;-)

If I'm not programming, hands-on with robots/hardware for many hours a day, I feel a bit lost and less able to think clearly about the world. It's just how my brain is built. I think it's because engineering humbles me to the reality of the world.

I need both literature & engineering in my life 🤣 I love both, and both are a source of truth.

I'm still doing the podcast, just adding much more engineering back into the mix ;-) The podcast gives me an opportunity to celebrate great scientists, engineers, and builders. This is one of the things I love doing most.

In the coming months, I'll continue splitting time between MIT and Caltech (Boston & LA) working with some brilliant people. The focus of the work is human-robot interaction with quadrupeds and humanoid robots.

I'll also likely be at NeurIPS in San Diego this year.

If you want to chat over coffee in Boston, LA, or San Diego for NeurIPS or have guest suggestions in those places, please fill out the coffee or guest forms respectively (see link in comment). For NeurIPS, please choose the "NeurIPS 2025" option for special event in the form.

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Here's the links for my conversation with Dan Houser: YouTube: https://t.co/4UbIsrDHV3 Spotify: ht...

Lex Fridman (@lexfridman) — Fri, 31 Oct 2025 21:35:47 GMT

Here's the links for my conversation with Dan Houser:

YouTube: youtube.com/watch?v=o3gbXD…

Spotify: open.spotify.com/show/2MAi0BvDc…

Podcast: lexfridman.com/podcast

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Here's my conversation with Dan Houser, co-founder of Rockstar Games and legendary creative mind beh...

Lex Fridman (@lexfridman) — Fri, 31 Oct 2025 21:35:46 GMT

Here's my conversation with Dan Houser, co-founder of Rockstar Games and legendary creative mind behind Grand Theft Auto (GTA) and Red Dead Redemption series of video games.

I have spent hundreds of hours in worlds that Dan helped create. So, this was an incredible honor and pleasure for me.

It's here on X in full and is up everywhere else (see comment).

Timestamps:
00 - Episode highlight
17 - Introduction
03 - Greatest films of all time
16 - Making video games
07 - GTA 3
26 - Open world video games
13 - Character creation
40 - Superintelligent AI in A Better Paradise
52 - Can LLMs write video games?
12 - Creating GTA 4 and GTA 5
47 - Hard work and Rockstar's culture of excellence
27 - GTA 6
13:17 - Red Dead Redemption 2
53:10 - DLCs for GTA and Red Dead Redemption
59:29 - Leaving Rockstar Games
08:53 - Greatest game of all time
13:41 - Life lessons from father
15:59 - Mortality
33:18 - Advice for young people
39:20 - Future of video games

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Here's the links for my conversation with Julia Shaw: YouTube: https://t.co/ulV38rGoEJ Spotify: ht...

Lex Fridman (@lexfridman) — Tue, 14 Oct 2025 18:44:26 GMT

Here's the links for my conversation with Julia Shaw:

YouTube: youtube.com/watch?v=7OLVwZ…

Spotify: open.spotify.com/show/2MAi0BvDc…

Podcast: lexfridman.com/podcast

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