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Atria Dawn Preview vs GPT-5.1

Atria Dawn Preview leads the LLM Stats Score 52.3 to 36.3.

Shanghai AI Laboratory · OpenAI · Updated for 2026

Which is better?

Atria Dawn Preview leads the overall LLM Stats Score 52.3 to 36.3, 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 — it leads those capability indexes
  • you want the most recent training data — it shipped Sep 2026
  • you need open weights you can self-host or fine-tune

Choose GPT-5.1

  • you want predictable pricing at $1.25/M input and $10.00/M output

At a glance

The differences that matter most.

Atria Dawn Preview
Shanghai AI Laboratory
GPT-5.1
OpenAI
Core performance indexes
LLM Stats Score
52.3
#10
36.3
#78
Reasoning
50.5
#12
36.1
#77
Coding
36.2
#22
21.2
#89
Cost, coverage & limits
Benchmark wins
—
—
Input price
— / M
$1.25 / M
Output price
— / M
$10.00 / M
Context window
—
400,000

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Atria Dawn Preview
GPT-5.1
Tool use
31.1#12
17.0#77
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

12 reported for Atria Dawn Preview · 9 for GPT-5.1

No common benchmarks found

Atria Dawn Preview and GPT-5.1don'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

Context Window

Maximum input and output token capacity

Only GPT-5.1 specifies input context (400,000 tokens). Only GPT-5.1 specifies output context (128,000 tokens).

Shanghai AI Laboratory
Atria Dawn Preview
Input- tokens
Output- tokens
OpenAI
GPT-5.1
Input400,000 tokens
Output128,000 tokens
Sun Sep 20 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

GPT-5.1 supports multimodal inputs, whereas Atria Dawn Preview does not.

GPT-5.1 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-5.1

Text
Images
Audio
Video

License

Usage and distribution terms

Atria Dawn Preview is licensed under MIT, while GPT-5.1 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-5.1

Proprietary

Closed source

Release Timeline

When each model was launched

Atria Dawn Preview was released on 2026-09-11, while GPT-5.1 was released on 2025-11-13.

Atria Dawn Preview is 10 months newer than GPT-5.1.

Atria Dawn Preview

Sep 11, 2026

1 weeks ago

10mo newer
GPT-5.1

Nov 13, 2025

10 months ago

Knowledge Cutoff

When training data ends

GPT-5.1 has a documented knowledge cutoff of 2024-09-30, while Atria Dawn Preview's cutoff date is not specified.

We can confirm GPT-5.1's training data extends to 2024-09-30, but cannot make a direct comparison without Atria Dawn Preview's cutoff date.

Atria Dawn Preview

—

GPT-5.1

Sep 2024

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Atria Dawn Preview and GPT-5.1 side-by-side, then vote on the output you prefer.

Atria Dawn Preview
✓ Preferred
GPT-5.1
Open in Playground

FAQ

Common questions about Atria Dawn Preview vs GPT-5.1.

Which is better, Atria Dawn Preview or GPT-5.1?

Atria Dawn Preview leads the LLM Stats Score 52.3 to 36.3. Atria Dawn Preview is made by Shanghai AI Laboratory and GPT-5.1 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-5.1 in benchmarks?

Atria Dawn Preview scores DeepSearchQA: 96.0%, BrowseComp: 92.5%, CyberGym: 86.5%, MLE-Bench Lite: 86.2%, WideSearch: 81.9%. GPT-5.1 scores Tau2 Telecom: 95.6%, AIME 2025: 94.0%, BrowseComp Long Context 128k: 90.0%, GPQA: 88.1%, MMMU: 85.4%.

What are the context window sizes for Atria Dawn Preview and GPT-5.1?

Atria Dawn Preview supports an unknown number of tokens and GPT-5.1 supports 400K 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-5.1?

Key differences include LLM Stats Score (52.3 vs 36.3), 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-5.1?

Atria Dawn Preview is developed by Shanghai AI Laboratory and GPT-5.1 is developed by OpenAI.

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