🇺🇸 SpaceX just flew an engine so advanced, only 2 other organizations in history ever built one.
The Soviet Union tried, the US barely demoed it, but SpaceX actually flew it.
Raptor 3 hits 350 bar chamber pressure, a world record, and shaved 10+ tons by eliminating heat shields, fire suppression systems, and basically anything that wasn't absolutely necessary.
Pure confidence in engineering.
"Raptor 3 is engineering art."
Definitely.
Source: AstroMind Hub YT, @elonmusk, @SpaceX
Big Balls explains what working with Elon Musk taught him.
"You've gotta do what you think is right. That's the biggest thing about Elon."
"I think if I was to distill the Elon mindset into one thing, it would be truthmaxxing."
Just uploaded my Apple Watch data straight into Grok… and it was insanely good
Grok gave me a full, detailed analysis of everything - heart rate trends, sleep stages, activity patterns, recovery scores, the works
It analyzed everything deeply and confirmed no red flags. Even explained my lower heart rate during sleep as completely normal given my workout routine
Grok gave me one of the most detailed and reassuring health analyses I’ve ever seen
This is legitimately one of the most useful AI experiences I’ve had
Highly recommend you try it..
Today we’re announcing the full rebuild of our advertising platform, the most ambitious in X’s 20-year history. This is classic X and xAI: bold, fast, and built for advertisers. I’m incredibly proud of our engineering team and everyone at X who made this happen. We designed the new ad stack from the ground up for rapid innovation - expect continuous improvements, powerful new features, greater flexibility and better performance. We look forward to working closely with our partners as we roll out this next-generation platform!
The migration in numbers:
- Team of 16 engineers worked over 6 weeks.
- We reduced our footprint from 6M CPU cores, to just 10k cores.
- We are now using the same Grok-based transformer models that power your home timeline.
- Eliminated 15 years of tech debt - replaced 1M LOC of Scala with just 50k LOC of Rust and Python
Today @xai just rearranged our leaderboards… Grok 4.3 jumped 25 points to take #1 on CaseLaw v2 and climbed 21 spots to lead CorpFin at 68.5%.
Congrats @xai@elonmusk 🚀