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Atria Dawn Preview vs Grok-4 Heavy

Atria Dawn Preview leads the LLM Stats Score 52.3 to 40.7.

Shanghai AI Laboratory · xAI · Updated for 2026

Which is better?

Atria Dawn Preview leads the overall LLM Stats Score 52.3 to 40.7, ranking #10 overall.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Atria Dawn Preview

  • overall performance matters — it scores 52.3 and ranks #10 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you need open weights you can self-host or fine-tune

Choose Grok-4 Heavy

  • you are already invested in the xAI ecosystem

At a glance

The differences that matter most.

Atria Dawn Preview
Shanghai AI Laboratory
Grok-4 Heavy
xAI
Core performance indexes
LLM Stats Score
52.3
#10
40.7
#54
Reasoning
50.5
#12
39.0
#58
Coding
36.2
#22
17.7
#115
Cost, coverage & limits
Benchmark wins
—
—
Input price
— / M
— / M
Output price
— / M
— / M
Context window
—
—

Individual benchmarks

12 reported for Atria Dawn Preview · 6 for Grok-4 Heavy

No common benchmarks found

Atria Dawn Preview and Grok-4 Heavydon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Input capabilities

Documented input modalities across available providers

Grok-4 Heavy supports multimodal inputs, whereas Atria Dawn Preview does not.

Grok-4 Heavy can handle both text and other forms of data like images, making it suitable for multimodal applications.

Atria Dawn Preview

Text
Images
Audio
Video

Grok-4 Heavy

Text
Images
Audio
Video

License

Usage and distribution terms

Atria Dawn Preview is licensed under MIT, while Grok-4 Heavy uses a proprietary license.

License differences may affect how you can use these models in commercial or open-source projects.

Atria Dawn Preview

MIT

Open weights

Grok-4 Heavy

Proprietary

Closed source

Release Timeline

When each model was launched

Atria Dawn Preview was released on 2026-09-11, while Grok-4 Heavy's release date is not specified.

We can confirm Atria Dawn Preview's release timeline, but cannot make a direct age comparison without Grok-4 Heavy's release date.

Atria Dawn Preview

Sep 11, 2026

1 weeks ago

Grok-4 Heavy

—

Knowledge Cutoff

When training data ends

Grok-4 Heavy has a documented knowledge cutoff of 2024-12-31, while Atria Dawn Preview's cutoff date is not specified.

We can confirm Grok-4 Heavy's training data extends to 2024-12-31, but cannot make a direct comparison without Atria Dawn Preview's cutoff date.

Atria Dawn Preview

—

Grok-4 Heavy

Dec 2024

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Atria Dawn Preview and Grok-4 Heavy side-by-side, then vote on the output you prefer.

Atria Dawn Preview
✓ Preferred
Grok-4 Heavy
Open in Playground

FAQ

Common questions about Atria Dawn Preview vs Grok-4 Heavy.

Which is better, Atria Dawn Preview or Grok-4 Heavy?

Atria Dawn Preview leads the LLM Stats Score 52.3 to 40.7. Atria Dawn Preview is made by Shanghai AI Laboratory and Grok-4 Heavy is made by xAI. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Atria Dawn Preview compare to Grok-4 Heavy in benchmarks?

Atria Dawn Preview scores DeepSearchQA: 96.0%, BrowseComp: 92.5%, CyberGym: 86.5%, MLE-Bench Lite: 86.2%, WideSearch: 81.9%. Grok-4 Heavy scores AIME 2025: 100.0%, HMMT25: 96.7%, GPQA: 88.4%, LiveCodeBench: 79.4%, USAMO25: 61.9%.

What are the main differences between Atria Dawn Preview and Grok-4 Heavy?

Key differences include LLM Stats Score (52.3 vs 40.7), multimodal support (no vs yes), licensing (MIT vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes Atria Dawn Preview and Grok-4 Heavy?

Atria Dawn Preview is developed by Shanghai AI Laboratory and Grok-4 Heavy is developed by xAI.

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