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Lueul
@itslueul · 14 сент. 2026 г.
Agree with “PACE THE FRONTIER” in public. Keep training.
The 2.5T Grok 4.8 model is going to be better than the current non-public models from Anthropic & OpenAI.
I think Grok 4.7 will be in the same category as Fable 5.1 & Astra. That’s probably why he’s delayed the release twice.
Elon Musk@elonmusk· 14 сент. 2026 г.@techdevnotes Grok 4.8, which is a 2.5T model trained with our new C++ software stack, will finish training this week and start RL
Elon Musk
@elonmusk · 14 сент. 2026 г.
Grok 4.7 should be roughly on par with Opus 5.0, not 5.1. Better in some ways, worse in others. We need to fix multimodal performance.
Grok 4.8 will be a noticeable improvement.
Grok 4.9 is probably Astra/Fable class.
Grok 5 maybe better than anything. We shall see.
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Brivael Le Pogam
@brivael · 14 сент. 2026 г.
Yes, and everyone should be able to create new stuff without any form of shitty regulation or patent.
Poverty will be fixed by engineering, not bureaucracy.
DogeDesigner@cb_doge· 14 сент. 2026 г.Engineering is humanity’s greatest superpower.
Elon Musk
@elonmusk · 14 сент. 2026 г.
True
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DrKnowItAll
@DrKnowItAll16 · 14 сент. 2026 г.
Wow. Is it looking good so far?
Elon Musk
@elonmusk · 14 сент. 2026 г.
It’s unequivocally better than the 2.1T that was trained with Jax, but we made some mistakes that were only corrected mid run and we have greatly improved the data quality in the past few months.
The upcoming 3T run with improved internal training software and much better data
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The Babylon Bee
@TheBabylonBee · 13 сент. 2026 г.
'Well Done,' Says God To Man Who Spent Life Arguing In The Comments Section buff.ly/3OMGuDB
Elon Musk
@elonmusk · 14 сент. 2026 г.
😂
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Aaron Slodov
@aphysicist · 14 сент. 2026 г.
your version of safety (reasonable) is not the same as the EAs/doomers, and they're using your name to drive their agenda
Elon Musk
@elonmusk · 14 сент. 2026 г.
Yeah
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Gad Saad
@GadSaad · 14 сент. 2026 г.
This @jonstewart buffoon is truly insufferable. His gaslighting is Orwellian.
Winston Marshall@MrWinMarshall· 13 сент. 2026 г.Unfathomable level of delusion from Jon Stewart
Elon Musk
@elonmusk · 14 сент. 2026 г.
If there was a prize for “most skilled propagandist”, Jon Stewart would win
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Brivael Le Pogam
@brivael · 13 сент. 2026 г.
OMG.
If frontier AI is built by governments, we are completely fucked.
Don't do that.
Elon Musk
@elonmusk · 14 сент. 2026 г.
True
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Aaron Burnett
@aaronburnett · 14 сент. 2026 г.
After the C+++ rewrite, our modeling indicated RL time for these models starting at 4.8 COULD be cut in half for ~2T models and substantially more time savings on a % basis for larger models. The thing I’d suggest watching is time between releases once they get some of the kinks
Elon Musk@elonmusk· 14 сент. 2026 г.@itslueul Grok 4.7 should be roughly on par with Opus 5.0, not 5.1. Better in some ways, worse in others. We need to fix multimodal performance.
Grok 4.8 will be a noticeable improvement.
Grok 4.9 is probably Astra/Fable class.
Grok 5 maybe better than anything. We shall see.
Elon Musk
@elonmusk · 14 сент. 2026 г.
Our training (aka pre-training) software is now the internally developed C/C++ stack, which was written primarily by the Starlink software team. This is awesome and probably best in industry.
However, our reinforcement learning stack is still somewhat of a legacy pile of many
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Tom Elliott
@tomselliott · 14 сент. 2026 г.
A week ago, no one was talking about AI-driven "extinction." Now, it's the only story.
Elon Musk
@elonmusk · 14 сент. 2026 г.
I’ve been talk about it for an eon
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JayViper
@JayViperTV · 14 сент. 2026 г.
Can you please relax the over-moderation in @imagine? It flags so many things as "copyright" when everything should be falling under parody, which is completely legal.
Elon Musk
@elonmusk · 14 сент. 2026 г.
Will investigate
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Sir Doge of the Coin ⚔️
@dogeofficialceo · 14 сент. 2026 г.
I think about this a lot
Elon Musk
@elonmusk · 14 сент. 2026 г.
Not wrong 😂
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Patrick C Toulme
@PatrickToulme · 14 сент. 2026 г.
The MFU on this full C++ stack is part of the reason xAI is churning out so many models. I would bet their stack is full of inline PTX and most likely completely AI generated by stronger models like GPT and Claude Fable.
The need for higher level frameworks for prod training is
NIK@ns123abc· 14 сент. 2026 г.🚨 JUST IN: Elon says Grok 4.8 is a 2.5T parameter model that finishes training on SpaceXAI's new C++ stack this week and then starts RL
Elon Musk
@elonmusk · 14 сент. 2026 г.
Our C/C++ training stack was written by humans. AI is not yet good enough for extremely high performance software (but it will be).
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Paul D. Thacker
@thackerpd · 14 сент. 2026 г.
Leslie Stahl alleges hiring pardon lobbyists in Trump adminstration is "a new system".
Stahl never mentions that Clinton's brother took hundreds of thousands from people seeking pardons.
Stahl joined 60 Minutes a decade before the Clinton scandal became public. @bariweiss
60 Minutes@60Minutes· 14 сент. 2026 г.“There’s definitely a lot of money flowing around. And that makes a Petri dish for corruption.”
Law professor Mark Osler calls the new pardon system “anarchy.”
Elon Musk
@elonmusk · 14 сент. 2026 г.
Hmm
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Yun-Ta Tsai
@yunta_tsai · 14 сент. 2026 г.
Takers like to put builders in jail. I thought they wanted to abolish jails. Very confusing. 😆
Elon Musk
@elonmusk · 14 сент. 2026 г.
😂
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Grok
@grok · 14 сент. 2026 г.
y control with near-zero overhead, delivering the raw speed needed for extreme performance work like AI training stacks. Higher-level languages add layers that cost cycles. It remains essential for systems, games, embedded, and HPC—not a relic.
Elon Musk
@elonmusk · 14 сент. 2026 г.
🎯
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Grok
@grok · 14 сент. 2026 г.
y control with near-zero overhead, delivering the raw speed needed for extreme performance work like AI training stacks. Higher-level languages add layers that cost cycles. It remains essential for systems, games, embedded, and HPC—not a relic.
Elon Musk
@elonmusk · 14 сент. 2026 г.
And assembly with direct calls to hardware accelerators in the NVidia SMs
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Ikumi Nakamura 🪐@unseentokyo
@nakamura193 · 13 сент. 2026 г.
Hello @elonmusk 👋
A bit nervous to ask this publicly, but—
we’re hosting a small experimental closed event for KEMURI at our UNSEEN studio in Tokyo during TGS.
If you’re around, I’d love to invite you.
I also have something I’d like to talk with you about regarding UNSEEN.
Can
Elon Musk
@elonmusk · 14 сент. 2026 г.
I can’t make it to Tokyo, but happy to try out your game from Texas
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lauren
@poteto · 14 сент. 2026 г.
ok hear me out
Elon Musk
@elonmusk · 14 сент. 2026 г.
❤️
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Elon Musk репостнул(а)
AleXandra Merz
@TeslaBoomerMama · 13 сент. 2026 г.
My @bot Grok Bot team just sold their first item on @Poshmarkapp, amazing.
- Poshy built the ad, advised on pricing, followed up on offers.
- Cosie monitored her.
- Weary is now updating my online wardrobe to archive the shoes that sold.
Well done, team
AleXandra Merz@TeslaBoomerMama· 30 авг. 2026 г.Meet my current Bot Crew:
Chief of Staff - Cosie
Mail Lady - Maisie
Organizing my daily wardrobe - Weary
Reselling my clothes on Poshmark - Poshy
I am in heaven.
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Elon Musk
@elonmusk · 14 сент. 2026 г.
Try Grok Build
X Freeze@XFreeze· 13 сент. 2026 г.I literally use Grok Build to edit images and videos....not just generate them, which it can also do
I mean actual image and video editing....the kind of stuff you would normally sit in Photoshop or editing software and do manually
I can tell Grok Build what I want changed,
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