Astrohacker

@AstrohackerLabs · 28. Juni 2026

hey @elonmusk - @beffjezos and i would like to try grok 4.5. can we get privileged early access?

Elon Musk

@elonmusk · 28. Juni 2026

I think we can probably give you early access on Tuesday night. Bear in mind, there is still a lot of polish to be done, but you will immediately notice the intelligence difference.

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Blake Scholl 🛫

@bscholl · 28. Juni 2026

Happy birthday @elonmusk. Make a good wish.

Elon Musk

@elonmusk · 28. Juni 2026

I wished for a bright future for all mankind

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Adeo Ressi

@adeoressi · 28. Juni 2026

Happy Birthday, Elon!

Elon Musk

@elonmusk · 28. Juni 2026

Thanks Adeo ❤️

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Dan

@KettlebellDan · 28. Juni 2026

maximum truth-seeking or bust

Elon Musk@elonmusk· 28. Juni 2026

Grok 4.5, based on our 1.5T V9 foundation model, with Cursor data added in supplemental training, is now in private beta at SpaceX & Tesla. Early evals show performance close to, perhaps exceeding Opus. RL is continuing to significantly improve the model, and the Grok Build

Elon Musk

@elonmusk · 28. Juni 2026

Yes

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Matteo Salvini

@matteosalvinimi · 28. Juni 2026

Tanti auguri @elonmusk! Da Neuralink per aiutare le persone con malattie neurodegenerative, a Starlink messo a disposizione dei paesi colpiti da catastrofi naturali, ai razzi riutilizzabili impiegati per la ricerca scientifica. E ancora il suo impegno per l’Occidente, per la

Elon Musk

@elonmusk · 28. Juni 2026

❤️

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Stephen Miller

@StephenM · 28. Juni 2026

This may shock the media to hear but for 99.999% of its history there was not a Haitian TPS diaspora in Springfield, Ohio. The Democrats illegally airlifted the Haitian migrants to Springfield in the months before President Trump took office.

Elon Musk

@elonmusk · 28. Juni 2026

🤨

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Trump War Room

@TrumpWarRoom · 28. Juni 2026

Happy birthday @elonmusk!

Elon Musk

@elonmusk · 28. Juni 2026

❤️🇺🇸

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Haozhu Wang

@haozhu_wang · 28. Juni 2026

It’s a good model, sir

Elon Musk@elonmusk· 28. Juni 2026

Grok 4.5, based on our 1.5T V9 foundation model, with Cursor data added in supplemental training, is now in private beta at SpaceX & Tesla. Early evals show performance close to, perhaps exceeding Opus. RL is continuing to significantly improve the model, and the Grok Build

Elon Musk

@elonmusk · 28. Juni 2026

It is 🫡

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Arthur MacWaters

@ArthurMacwaters · 28. Juni 2026

Logically, since she didn’t personally fund USAID in the gap, she is responsible for the deaths of 10 million children

Pubity@pubity· 27. Juni 2026

Jeff Bezos' ex-wife MacKenzie Scott has given over $26,300,000,000 to charity, making her one of the biggest individual donors in history. She wants to spend the majority of her Bezos fortune on helping others and making the world a better place.

Elon Musk

@elonmusk · 28. Juni 2026

That is logical!

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akshey

@aksheyd · 28. Juni 2026

It’s got a bit of zing to it sir

Elon Musk@elonmusk· 28. Juni 2026

Grok 4.5, based on our 1.5T V9 foundation model, with Cursor data added in supplemental training, is now in private beta at SpaceX & Tesla. Early evals show performance close to, perhaps exceeding Opus. RL is continuing to significantly improve the model, and the Grok Build

Elon Musk

@elonmusk · 28. Juni 2026

😂💯

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Elon Musk

@elonmusk · 28. Juni 2026

, I’m not saying the Grok v9 foundation model will be mind-blowingly better than anything, but it will be a solid workhorse in the same league as Opus. And the SpaceXAI cadence of model and harness improvement is speeding up tremendously, particularly due to a few dozen of t

Elon Musk

@elonmusk · 28. Juni 2026

In addition to their excellent and unique training data, the Cursor team is also making major engineering contributions to v9 SFT & RL. It’s an honor and a pleasure to work with them. For this 1.5T run, Cursor data was added in supplemental training, which is not quite as good as having it in initial training. The 2T run that started a few weeks ago has greatly improved data in scope & scale in almost every arena, and many upgrades/fixes to the training recipe. That will finish in late July for August release.

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Whole Mars Catalog

@wholemars · 28. Juni 2026

I thought it only cost $6 billion to solve world hunger. Why didn’t she do that?

Pubity@pubity· 27. Juni 2026

Jeff Bezos' ex-wife MacKenzie Scott has given over $26,300,000,000 to charity, making her one of the biggest individual donors in history. She wants to spend the majority of her Bezos fortune on helping others and making the world a better place.

Elon Musk

@elonmusk · 28. Juni 2026

Maybe she didn’t feel like it 🤷‍♂️

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Beff (e/acc)

@beffjezos · 28. Juni 2026

Looks like Grok is back on the menu

Elon Musk@elonmusk· 28. Juni 2026

Grok 4.5, based on our 1.5T V9 foundation model, with Cursor data added in supplemental training, is now in private beta at SpaceX & Tesla. Early evals show performance close to, perhaps exceeding Opus. RL is continuing to significantly improve the model, and the Grok Build

Elon Musk

@elonmusk · 28. Juni 2026

To be clear, I’m not saying the Grok v9 foundation model will be mind-blowingly better than anything, but it will be a solid workhorse in the same league as Opus. And the SpaceXAI cadence of model and harness improvement is speeding up tremendously, particularly due to a few dozen of the top Starlink/Starship engineers shifting a much of their time to AI. Worth noting that the v8 foundation (Grok 4.3) model is a 0.5T model that finished training all the way back in December and has many fundamental flaws, so Grok 4.5 will feel like a gigantic upgrade!

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Paul Graham

@paulg · 28. Juni 2026

Nearly all those who say the US should only admit the most talented immigrants would not themselves clear the bar they're proposing. They're effectively saying "Immigration is ok so long as you keep out people like me."

Elon Musk

@elonmusk · 28. Juni 2026

Immigration to a country should follow the same principles as successful companies follow with recruiting

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Nicki Minaj

@NICKIMINAJ · 28. Juni 2026

Thank you for saving free speech, Elon. Happy Birthday 🎉🎉🎉 Love always 🫶🏽 From Gag City & the Barbz! 🩷🎀

Elon Musk

@elonmusk · 28. Juni 2026

❤️

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Yishan

@yishan · 27. Juni 2026

A big problem with research studies on AI models is that given how long the peer review process is, the results are always out-of-date by the time the paper is published. This time, we have something better! The typical reaction to research results like this roughly goes

Eric Topol@EricTopol· 26. Juni 2026

We stress tested many frontier AI models for multimodal medical reasoning (including GPT-5, Claude 3.5, Gemini 2.5 Pro). They’re not ready. Faulty reasoning, use of inappropriate shortcuts, hallucinations. Published today @NatureMedicine

Elon Musk

@elonmusk · 28. Juni 2026

They should just post it here

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Elon Musk

@elonmusk · 28. Juni 2026

Antwort an @RealJamesWoods

Pretty much. It’s not promoted in any other countries …

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Officer Frenly (High IQ)

@FrenlyOfficer · 27. Juni 2026

Unfortunately, she’s spending it making the world a worse place

Pubity@pubity· 27. Juni 2026

Jeff Bezos' ex-wife MacKenzie Scott has given over $26,300,000,000 to charity, making her one of the biggest individual donors in history. She wants to spend the majority of her Bezos fortune on helping others and making the world a better place.

Elon Musk

@elonmusk · 28. Juni 2026

Sadly, yes

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Fox News

@FoxNews · 28. Juni 2026

Happy Birthday to Elon Musk. From helping build Tesla into the world's leading EV company to making reusable rockets a reality at SpaceX, Musk has spent decades pushing the boundaries of innovation. His influence has also expanded into politics and public policy, making him one

Elon Musk

@elonmusk · 28. Juni 2026

Thanks :)

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Matt Bracken

@Matt_Bracken48 · 27. Juni 2026

No point in bailing the boat while traitors are still busy chopping holes in the bottom.

Elon Musk

@elonmusk · 28. Juni 2026

Yes

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