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Atria Dawn Preview vs Kimi K2.5

Atria Dawn Preview leads the LLM Stats Score 52.3 to 38.8.

Shanghai AI Laboratory · Moonshot AI · Updated for 2026

Which is better?

Atria Dawn Preview leads the overall LLM Stats Score 52.3 to 38.8, ranking #10 overall.

In the 5 individual benchmarks reported for both models, Atria Dawn Preview wins 5; 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 5 of 5 exact shared results
  • you want the most recent training data — it shipped Sep 2026

Choose Kimi K2.5

  • you want predictable pricing at $0.60/M input and $3.00/M output

At a glance

The differences that matter most.

Atria Dawn Preview
Shanghai AI Laboratory
Kimi K2.5
Moonshot AI
Core performance indexes
LLM Stats Score
52.3
#10
38.8
#62
Reasoning
50.5
#12
38.7
#60
Coding
36.2
#22
25.2
#70
Agents
38.8
#10
18.3
#69
Cost, coverage & limits
Benchmark wins
5 of 5
0 of 5
Input price
— / M
$0.60 / M
Output price
— / M
$3.00 / M
Context window
—
262,100

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Atria Dawn Preview
Kimi K2.5
Research
36.1#1
22.3#20
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

12 reported for Atria Dawn Preview · 40 for Kimi K2.5

5 shared

Atria Dawn Preview outperforms in 5 benchmarks (BrowseComp, CyberGym, DeepSearchQA, SWE-Bench Pro, WideSearch), while Kimi K2.5 is better at 0 benchmarks.

Atria Dawn Preview significantly outperforms across most benchmarks.

Wed Sep 16 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Model Size

Parameter count comparison

256.0B diff

Kimi K2.5 has 256.0B more parameters than Atria Dawn Preview, making it 34.4% larger.

Shanghai AI Laboratory
Atria Dawn Preview
744.0Bparameters
Moonshot AI
Kimi K2.5
1.0Tparameters
744.0B
Atria Dawn Preview
1000.0B
Kimi K2.5

Context Window

Maximum input and output token capacity

Only Kimi K2.5 specifies input context (262,100 tokens). Only Kimi K2.5 specifies output context (262,100 tokens).

Shanghai AI Laboratory
Atria Dawn Preview
Input- tokens
Output- tokens
Moonshot AI
Kimi K2.5
Input262,100 tokens
Output262,100 tokens
Wed Sep 16 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Kimi K2.5 supports multimodal inputs, whereas Atria Dawn Preview does not.

Kimi K2.5 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Atria Dawn Preview

Text
Images
Audio
Video

Kimi K2.5

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under MIT.

Both models share the same licensing terms, providing consistent usage rights.

Atria Dawn Preview

MIT

Open weights

Kimi K2.5

MIT

Open weights

Release Timeline

When each model was launched

Atria Dawn Preview was released on 2026-09-11, while Kimi K2.5 was released on 2026-01-27.

Atria Dawn Preview is 8 months newer than Kimi K2.5.

Atria Dawn Preview

Sep 11, 2026

5 days ago

7mo newer
Kimi K2.5

Jan 27, 2026

7 months 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 Kimi K2.5 side-by-side, then vote on the output you prefer.

Atria Dawn Preview
✓ Preferred
Kimi K2.5
Open in Playground

FAQ

Common questions about Atria Dawn Preview vs Kimi K2.5.

Which is better, Atria Dawn Preview or Kimi K2.5?

Atria Dawn Preview leads the LLM Stats Score 52.3 to 38.8. Atria Dawn Preview is made by Shanghai AI Laboratory and Kimi K2.5 is made by Moonshot AI. 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 Kimi K2.5 in benchmarks?

Atria Dawn Preview scores DeepSearchQA: 96.0%, BrowseComp: 92.5%, CyberGym: 86.5%, MLE-Bench Lite: 86.2%, WideSearch: 81.9%. Kimi K2.5 scores AIME 2025: 96.1%, HMMT 2025: 95.4%, InfoVQAtest: 92.6%, OCRBench: 92.3%, MathVista-Mini: 90.1%.

What are the context window sizes for Atria Dawn Preview and Kimi K2.5?

Atria Dawn Preview supports an unknown number of tokens and Kimi K2.5 supports 262K 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 Kimi K2.5?

Key differences include LLM Stats Score (52.3 vs 38.8), multimodal support (no vs yes). See the full comparison above for benchmark-by-benchmark results.

Who makes Atria Dawn Preview and Kimi K2.5?

Atria Dawn Preview is developed by Shanghai AI Laboratory and Kimi K2.5 is developed by Moonshot AI.

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