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Atria Dawn Preview vs o3-mini

Atria Dawn Preview leads the LLM Stats Score 52.3 to 21.5.

Shanghai AI Laboratory · OpenAI · Updated for 2026

Which is better?

Atria Dawn Preview leads the overall LLM Stats Score 52.3 to 21.5, 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 want the most recent training data — it shipped Sep 2026
  • you need open weights you can self-host or fine-tune

Choose o3-mini

  • you want predictable pricing at $1.10/M input and $4.40/M output

At a glance

The differences that matter most.

Atria Dawn Preview
Shanghai AI Laboratory
o3-mini
OpenAI
Core performance indexes
LLM Stats Score
52.3
#10
21.5
#187
Reasoning
50.5
#12
20.6
#186
Coding
36.2
#22
5.1
#203
Cost, coverage & limits
Benchmark wins
—
—
Input price
— / M
$1.10 / M
Output price
— / M
$4.40 / M
Context window
—
200,000

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Atria Dawn Preview
o3-mini
Tool use
31.1#12
-0.0#180
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

12 reported for Atria Dawn Preview · 25 for o3-mini

No common benchmarks found

Atria Dawn Preview and o3-minidon'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 o3-mini specifies input context (200,000 tokens). Only o3-mini specifies output context (100,000 tokens).

Shanghai AI Laboratory
Atria Dawn Preview
Input- tokens
Output- tokens
OpenAI
o3-mini
Input200,000 tokens
Output100,000 tokens
Thu Sep 17 2026 • llm-stats.com

License

Usage and distribution terms

Atria Dawn Preview is licensed under MIT, while o3-mini 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

o3-mini

Proprietary

Closed source

Release Timeline

When each model was launched

Atria Dawn Preview was released on 2026-09-11, while o3-mini was released on 2025-01-30.

Atria Dawn Preview is 20 months newer than o3-mini.

Atria Dawn Preview

Sep 11, 2026

5 days ago

1.6yr newer
o3-mini

Jan 30, 2025

1.6 years ago

Knowledge Cutoff

When training data ends

o3-mini has a documented knowledge cutoff of 2023-09-30, while Atria Dawn Preview's cutoff date is not specified.

We can confirm o3-mini's training data extends to 2023-09-30, but cannot make a direct comparison without Atria Dawn Preview's cutoff date.

Atria Dawn Preview

—

o3-mini

Sep 2023

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Atria Dawn Preview and o3-mini side-by-side, then vote on the output you prefer.

Atria Dawn Preview
✓ Preferred
o3-mini
Open in Playground

FAQ

Common questions about Atria Dawn Preview vs o3-mini.

Which is better, Atria Dawn Preview or o3-mini?

Atria Dawn Preview leads the LLM Stats Score 52.3 to 21.5. Atria Dawn Preview is made by Shanghai AI Laboratory and o3-mini 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 o3-mini in benchmarks?

Atria Dawn Preview scores DeepSearchQA: 96.0%, BrowseComp: 92.5%, CyberGym: 86.5%, MLE-Bench Lite: 86.2%, WideSearch: 81.9%. o3-mini scores COLLIE: 98.7%, MATH: 97.9%, IFEval: 93.9%, MGSM: 92.0%, AIME 2024: 87.3%.

What are the context window sizes for Atria Dawn Preview and o3-mini?

Atria Dawn Preview supports an unknown number of tokens and o3-mini supports 200K 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 o3-mini?

Key differences include LLM Stats Score (52.3 vs 21.5), licensing (MIT vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes Atria Dawn Preview and o3-mini?

Atria Dawn Preview is developed by Shanghai AI Laboratory and o3-mini is developed by OpenAI.

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