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Atria Dawn Preview vs GPT-6 Astra

GPT-6 Astra leads the LLM Stats Score 59.6 to 52.3.

Shanghai AI Laboratory · OpenAI · Updated for 2026

Which is better?

GPT-6 Astra leads the overall LLM Stats Score 59.6 to 52.3, ranking #1 overall.

In the 2 individual benchmarks reported for both models, Atria Dawn Preview wins 2; 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

  • you value its reported benchmark strengths — it wins 2 of 2 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 GPT-6 Astra

  • overall performance matters — it scores 59.6 and ranks #1 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes

At a glance

The differences that matter most.

Atria Dawn Preview
Shanghai AI Laboratory
GPT-6 Astra
OpenAI
Core performance indexes
LLM Stats Score
52.3
#10
59.6
#1
Reasoning
50.5
#12
57.5
#1
Coding
36.2
#22
48.5
#1
Agents
38.8
#10
45.7
#1
Cost, coverage & limits
Benchmark wins
2 of 2
0 of 2
Input price
— / M
$10.00 / M
Output price
— / M
$50.00 / M
Context window
—
1,050,000

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Atria Dawn Preview
GPT-6 Astra
Tool use
31.1#12
35.6#1
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

12 reported for Atria Dawn Preview · 22 for GPT-6 Astra

2 shared

Atria Dawn Preview outperforms in 2 benchmarks (AutomationBench, BrowseComp), while GPT-6 Astra is better at 0 benchmarks.

Atria Dawn Preview significantly outperforms across most benchmarks.

Tue Sep 15 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only GPT-6 Astra specifies input context (1,050,000 tokens). Only GPT-6 Astra specifies output context (128,000 tokens).

Shanghai AI Laboratory
Atria Dawn Preview
Input- tokens
Output- tokens
OpenAI
GPT-6 Astra
Input1,050,000 tokens
Output128,000 tokens
Tue Sep 15 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

GPT-6 Astra supports multimodal inputs, whereas Atria Dawn Preview does not.

GPT-6 Astra can handle both text and other forms of data like images, making it suitable for multimodal applications.

Atria Dawn Preview

Text
Images
Audio
Video

GPT-6 Astra

Text
Images
Audio
Video

License

Usage and distribution terms

Atria Dawn Preview is licensed under MIT, while GPT-6 Astra 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

GPT-6 Astra

Proprietary

Closed source

Release Timeline

When each model was launched

Atria Dawn Preview was released on 2026-09-11, while GPT-6 Astra was released on 2026-09-04.

Atria Dawn Preview is 0 month newer than GPT-6 Astra.

Atria Dawn Preview

Sep 11, 2026

4 days ago

1w newer
GPT-6 Astra

Sep 4, 2026

1 weeks ago

Knowledge Cutoff

When training data ends

GPT-6 Astra has a documented knowledge cutoff of 2026-04-30, while Atria Dawn Preview's cutoff date is not specified.

We can confirm GPT-6 Astra's training data extends to 2026-04-30, but cannot make a direct comparison without Atria Dawn Preview's cutoff date.

Atria Dawn Preview

—

GPT-6 Astra

Apr 2026

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Atria Dawn Preview and GPT-6 Astra side-by-side, then vote on the output you prefer.

Atria Dawn Preview
✓ Preferred
GPT-6 Astra
Open in Playground

FAQ

Common questions about Atria Dawn Preview vs GPT-6 Astra.

Which is better, Atria Dawn Preview or GPT-6 Astra?

GPT-6 Astra leads the LLM Stats Score 59.6 to 52.3. Atria Dawn Preview is made by Shanghai AI Laboratory and GPT-6 Astra is made by OpenAI. 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 GPT-6 Astra in benchmarks?

Atria Dawn Preview scores DeepSearchQA: 96.0%, BrowseComp: 92.5%, CyberGym: 86.5%, MLE-Bench Lite: 86.2%, WideSearch: 81.9%. GPT-6 Astra scores ExploitBench: 100.0%, ARC-AGI-3: 99.9%, ARC-AGI: 98.5%, FrontierMath Tier 4 (v2): 97.6%, GPQA: 96.0%.

What are the context window sizes for Atria Dawn Preview and GPT-6 Astra?

Atria Dawn Preview supports an unknown number of tokens and GPT-6 Astra supports 1.1M 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 GPT-6 Astra?

Key differences include LLM Stats Score (52.3 vs 59.6), 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 GPT-6 Astra?

Atria Dawn Preview is developed by Shanghai AI Laboratory and GPT-6 Astra is developed by OpenAI.

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