heiner
@HeinrichKuttler
Pretraining @xAI. Previously: @InflectionAI, @AIatMeta, @DeepMind, @Google, @LMU_Muenchen, PhD math-ph. Opinions my own. (Can be yours for a small fee.)
(No reason for a random engineer like myself to opine on this or for you to read it, but here on X we are:) I literally chatted up my wife in a bar. Best day of my life. The more reluctant other guys are the more successful cold approaches will be. It's Econ 101 all the way.
Why are so few young men approaching girls now? Massive shift underway where you have 8-9s yearning to be chatted up. They get dressed up to go out, but all for nothing.
Finally a high score we can be proud of.
LLMs acing math olympiads? Cute. But BALROG is where agents fight dragons (and actual Balrogs)🐉😈 And today, Grok-4 (@grok) takes the gold 🥇 Welcome to the podium, champion!
This sounds like propaganda but it's actually just true.
In Europe, thousands are being convicted for the crime of criticizing their own governments. This Orwellian message won't fool the United States. Censorship is not freedom.
Some of us flew to Memphis last year over the weekend, and fired up our first H100s on Colossus at 4:20AM. Exactly one year later, we're still expanding and now got our first batch of 550K GB200s - x.com/elonmusk/statu…. Proud to be part of a cracked team.
230k GPUs, including 30k GB200s, are operational for training Grok @xAI in a single supercluster called Colossus 1 (inference is done by our cloud providers). At Colossus 2, the first batch of 550k GB200s & GB300s, also for training, start going online in a few weeks. As Jensen…
This day 10 years ago I moved to the UK and started my tech career. (@BSchweinsteiger moved there shortly before me.) What a fun ride it has been, and the best is yet to come.

Men will literally build a data center the size of Manhattan instead of finally reading the scaling law literature.
That's.... MASSIVE CAN YOU FEEL THE ACCELERATION
We apologize for the recent drop in birth rates sparked by the release of Ani. To reverse this we've decided to add matchmaking capabilities to Grok. Please use this feature responsibly.
Hey @grok, scan through all my mutuals and find me a girlfriend, thanks
I unironically wish this one was longer.
New episode with Stephen Kotkin, Stalin biographer and historian. No other individual had more of a profound impact on the 20th century than Stalin. He held the power of life and death over every single person across 11 time zones, and he killed tens of millions of people,…
it never fails to astonish me how much a small group of talented people working with extreme focus and intensity can achieve in a very short time
Sadly, the US immigration system is still giving some talented AI researchers and their families a hard time. That's bad because the US must win.