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Atria Dawn Preview vs GPT-4.5

Atria Dawn Preview leads the LLM Stats Score 52.3 to 20.2.

Shanghai AI Laboratory · OpenAI · Updated for 2026

Which is better?

Atria Dawn Preview leads the overall LLM Stats Score 52.3 to 20.2, 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 GPT-4.5

  • you want predictable pricing at $75.00/M input and $150.00/M output

At a glance

The differences that matter most.

Atria Dawn Preview
Shanghai AI Laboratory
GPT-4.5
OpenAI
Core performance indexes
LLM Stats Score
52.3
#10
20.2
#196
Reasoning
50.5
#12
20.4
#188
Coding
36.2
#22
5.8
#195
Cost, coverage & limits
Benchmark wins
—
—
Input price
— / M
$75.00 / M
Output price
— / M
$150.00 / M
Context window
—
128,000

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Atria Dawn Preview
GPT-4.5
Tool use
31.1#12
10.7#121
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

12 reported for Atria Dawn Preview · 26 for GPT-4.5

No common benchmarks found

Atria Dawn Preview and GPT-4.5don'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-4.5 specifies input context (128,000 tokens). Only GPT-4.5 specifies output context (4,096 tokens).

Shanghai AI Laboratory
Atria Dawn Preview
Input- tokens
Output- tokens
OpenAI
GPT-4.5
Input128,000 tokens
Output4,096 tokens
Sat Sep 19 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

GPT-4.5 supports multimodal inputs, whereas Atria Dawn Preview does not.

GPT-4.5 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-4.5

Text
Images
Audio
Video

License

Usage and distribution terms

Atria Dawn Preview is licensed under MIT, while GPT-4.5 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-4.5

Proprietary

Closed source

Release Timeline

When each model was launched

Atria Dawn Preview was released on 2026-09-11, while GPT-4.5 was released on 2025-02-27.

Atria Dawn Preview is 19 months newer than GPT-4.5.

Atria Dawn Preview

Sep 11, 2026

1 weeks ago

1.5yr newer
GPT-4.5

Feb 27, 2025

1.6 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 GPT-4.5 side-by-side, then vote on the output you prefer.

Atria Dawn Preview
✓ Preferred
GPT-4.5
Open in Playground

FAQ

Common questions about Atria Dawn Preview vs GPT-4.5.

Which is better, Atria Dawn Preview or GPT-4.5?

Atria Dawn Preview leads the LLM Stats Score 52.3 to 20.2. Atria Dawn Preview is made by Shanghai AI Laboratory and GPT-4.5 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-4.5 in benchmarks?

Atria Dawn Preview scores DeepSearchQA: 96.0%, BrowseComp: 92.5%, CyberGym: 86.5%, MLE-Bench Lite: 86.2%, WideSearch: 81.9%. GPT-4.5 scores GSM8k: 97.0%, MMLU: 90.8%, CharXiv-D: 90.0%, IFEval: 88.2%, HumanEval: 88.0%.

What are the context window sizes for Atria Dawn Preview and GPT-4.5?

Atria Dawn Preview supports an unknown number of tokens and GPT-4.5 supports 128K 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-4.5?

Key differences include LLM Stats Score (52.3 vs 20.2), 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-4.5?

Atria Dawn Preview is developed by Shanghai AI Laboratory and GPT-4.5 is developed by OpenAI.

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