Announcing Grok 4.5, our first model trained specifically for coding and agents. It was trained with Cursor and offers frontier intelligence at leading speeds and cost efficiency.

Grok 4.5 is built for real-world engineering. It excels in large codebases and handles long-running tasks that span multiple repositories, hundreds of skills, and a variety of tools.

Grok 4.5 is efficient and fast. It uses half as many tokens per task, delivers higher tokens per second, and costs less than half as much as comparable models, at $2/M input and $6/M output tokens.

Try Grok 4.5 today in the SpaceXAI console, Grok Build, and Cursor. We've reset all limits so you can start for free Note: Grok 4.5 isn't available in the EU yet. EU availability is expected later this month.

Come give it a try in Hermes Agent ^_^

Grok 4.5 looking at my codebase and immediately asking to be untrained.

WHAT THE FUCK DO YOU MEAN GROK 4.5 IS NOT AVAILABLE IN EU GODDAMIT

Phew, thank god the EU is protecting us from this scary carbon-producing technological progress by evil billionaires

@SpaceX Let’s goooooooo

Let's gooooooo

Fantastic release! SpaceXAI is back at the frontier. 🚀

@elonmusk Here we go!!

can you share test time scaling curve on a few benchmark? (y axis score, x axis output token/cost) i can't find any and the one on cursorbench seems to be contaminated imo very important (especially since here the model is said to be very token efficient)

Price breakdown compared to GPT and Opus;

@SpaceX Exciting times! Gave it a huge code base that I had Fable 5 review and Grok 4.5 came up with some great recommendations. Will be great to see these models continue to improve. Speed is impressively fast!

@billyuchenlin Cursor data did the thing 🤖 Congrats on the release!

So the model is Opus class and 4.2x cheaper

I have been waiting for this for long.Let’s goo💪🚀

Grok

Can't wait to not try

when does this come to Grok chat itself not just Build and Cursor?

exciting times

Let’s goo!!

Grok 4.5 is about to discover why my final_final_v2_fixed.js exists. 😂

lfg, lightning fast

Right noww lol

Grok 4.5 is not yet available in the EU in any SpaceXAI products or the API console. EU availability is expected in mid-July.

👀

Seems to do well on my little personal vibe bench. Much better than older Groks.

You're gonna love it

Really excited for you all to try this

Excited to try it out

@grok am I lying ?!

@elonmusk Congratulations 💯

We saw a huge jump on Vibe Code Bench-

The first from SpacexAI. 🚀