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Atria Dawn Preview vs Grok 4 Fast

Atria Dawn Preview leads the LLM Stats Score 52.3 to 31.7.

Shanghai AI Laboratory · xAI · Updated for 2026

Which is better?

Atria Dawn Preview leads the overall LLM Stats Score 52.3 to 31.7, ranking #10 overall.

In the 1 individual benchmarks reported for both models, Atria Dawn Preview wins 1; this is a narrower head-to-head signal than the composite indexes.

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 value its reported benchmark strengths — it wins 1 of 1 exact shared results
  • you want the most recent training data — it shipped Sep 2026
  • you need open weights you can self-host or fine-tune

Choose Grok 4 Fast

  • you want predictable pricing at $0.20/M input and $0.50/M output

At a glance

The differences that matter most.

Atria Dawn Preview
Shanghai AI Laboratory
Grok 4 Fast
xAI
Core performance indexes
LLM Stats Score
52.3
#10
31.7
#110
Reasoning
50.5
#12
30.7
#115
Coding
36.2
#22
18.1
#112
Agents
38.8
#10
3.0
#161
Cost, coverage & limits
Benchmark wins
1 of 1
0 of 1
Input price
— / M
$0.20 / M
Output price
— / M
$0.50 / M
Context window
—
2,000,000

Individual benchmarks

12 reported for Atria Dawn Preview · 7 for Grok 4 Fast

1 shared

Atria Dawn Preview outperforms in 1 benchmarks (BrowseComp), while Grok 4 Fast is better at 0 benchmarks.

Atria Dawn Preview significantly outperforms across most benchmarks.

Sun Sep 20 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only Grok 4 Fast specifies input context (2,000,000 tokens). Only Grok 4 Fast specifies output context (30,000 tokens).

Shanghai AI Laboratory
Atria Dawn Preview
Input- tokens
Output- tokens
xAI
Grok 4 Fast
Input2,000,000 tokens
Output30,000 tokens
Sun Sep 20 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

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

Grok 4 Fast 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 Fast

Text
Images
Audio
Video

License

Usage and distribution terms

Atria Dawn Preview is licensed under MIT, while Grok 4 Fast 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 Fast

Proprietary

Closed source

Release Timeline

When each model was launched

Atria Dawn Preview was released on 2026-09-11, while Grok 4 Fast was released on 2025-08-28.

Atria Dawn Preview is 13 months newer than Grok 4 Fast.

Atria Dawn Preview

Sep 11, 2026

1 weeks ago

1.0yr newer
Grok 4 Fast

Aug 28, 2025

1.1 years ago

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

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 Fast side-by-side, then vote on the output you prefer.

Atria Dawn Preview
✓ Preferred
Grok 4 Fast
Open in Playground

FAQ

Common questions about Atria Dawn Preview vs Grok 4 Fast.

Which is better, Atria Dawn Preview or Grok 4 Fast?

Atria Dawn Preview leads the LLM Stats Score 52.3 to 31.7. Atria Dawn Preview is made by Shanghai AI Laboratory and Grok 4 Fast 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 Fast 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 Fast scores SimpleQA: 95.0%, HMMT 2025: 93.3%, AIME 2025: 92.0%, GPQA: 85.7%, LiveCodeBench: 80.0%.

What are the context window sizes for Atria Dawn Preview and Grok 4 Fast?

Atria Dawn Preview supports an unknown number of tokens and Grok 4 Fast supports 2.0M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

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

Key differences include LLM Stats Score (52.3 vs 31.7), 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 Fast?

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

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