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Jul 10, 2025 21 tweets 6 min read Read on X
BREAKING: xAI announces Grok 4

"It can reason at a superhuman level!"

Here is everything you need to know: Image
Elon claims that Grok 4 is smarter than almost all grad students in all disciplines simultaneously.

100x more training than Grok 2.

10x more compute on RL than any of the models out there. Image
Performance on Humanity's Last Exam

Elon: "Grok 4 is post-grad level in everything!" Image
Scaling HLE - Training

More compute, higher intelligence.

(no tools) Image
With native tool calling, Grok 4 increases the performance significantly.

Look at those curves!

It's important to give AI the right tools. The scaling is clear. Crazy! Image
Reliable signals are key to making RL work.

There is still the challenge of data.

Elon: "Ultimate reasoning test is AI operating in reality."
Scaling test-time compute

More than 50% of the text-only subset of the HLE problems are solved!

The curves keep getting more ridiculous. Image
Grok 4 is the single-agent version.

Grok 4 Heavy is the multi-agent version.

Multi-agent systems are no joke! Image
Grok 4 is being used to predict the World Series champions for this year.

These are the interesting tasks that reasoning models need to be tested on. On actual real-world events. Image
A visualization of two black holes colliding.

Grok 4 uses all kinds of references like papers, reads PDFs, reasons about the details of the simulation, and what data to use. Image
The example shows a summary of the timeline/changes and score announcements in the HLE.

That's pretty cool! Image
Multi-modal performance

Grok 4 Heavy performance is higher than Grok 4, but needs to be improved further. It's one of the weaknesses, according to the team. Image
Performance on Reasoning benchmarks.

Perfect score on AIME25!

Leaps are crazy compared to the last best model on these tasks. Image
Where to test the models.

Available as SuperGrok Heavy tier.

$30/m for Super Grok
$300/m for SuperGrok Heavy. Image
Voice updates included, too!

Grok feels snappier and is designed to be more natural.

- 2x faster
- 5 voices
- 10x daily user seconds Image
ARC-AGI

Grok 4 on ARC-AGI v2 (private subset)

It breaks the 10% barrier (15.9%).

2x the second place, which is the Claude Opus 4 model. Image
Grok 4 on Vending Bench

Grok 4 gets the #1 spot.

Double the net worth of Claude Opus 4. Image
Grok 4 models are available via the xAI API.

256K context window.

Real-time data search. Image
Grok 4 for Gaming!

Video understanding is an area the team is improving, so it will get better. Image
What is next?

Smart and fast will be the focus.

Coding models are also a big focus.

More capable multi-modal agents are coming too.

Video generation models are also on the horizon. Image
@elonmusk and the @xai team really cooked with Grok 4. All very exciting to see focus on AI for reality, truth-seeking, and unlocking multi-modal agents next.

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Jan 2
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It doesn't get any easier than this.

Full walkthrough below with prompts, tips, and use case.
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This is insane! 🤯

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It's finally ready for you all to try!

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(bookmark it)

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Works better on Desktop.

…dair-ai-181664986325.us-west1.run.app
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If you don't have a PDF to try, just click on one of the example papers provided: Image
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