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Atria Dawn Preview vs Kimi K2-Thinking-0905

Atria Dawn Preview leads the LLM Stats Score 52.3 to 36.0.

Shanghai AI Laboratory · Moonshot AI · Updated for 2026

Which is better?

Atria Dawn Preview leads the overall LLM Stats Score 52.3 to 36.0, ranking #10 overall.

In the 1 individual benchmarks reported for both models, Atria Dawn Preview wins 1; 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 1 of 1 exact shared results
  • you want the most recent training data — it shipped Sep 2026

Choose Kimi K2-Thinking-0905

  • you want predictable pricing at $0.47/M input and $2.00/M output

At a glance

The differences that matter most.

Atria Dawn Preview
Shanghai AI Laboratory
Kimi K2-Thinking-0905
Moonshot AI
Core performance indexes
LLM Stats Score
52.3
#10
36.0
#81
Reasoning
50.5
#12
36.2
#74
Coding
36.2
#22
21.0
#91
Agents
38.8
#10
16.0
#80
Cost, coverage & limits
Benchmark wins
1 of 1
0 of 1
Input price
— / M
$0.47 / M
Output price
— / M
$2.00 / M
Context window
—
262,144

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Atria Dawn Preview
Kimi K2-Thinking-0905
Research
36.1#1
16.1#38
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

12 reported for Atria Dawn Preview · 21 for Kimi K2-Thinking-0905

1 shared

Atria Dawn Preview outperforms in 1 benchmarks (BrowseComp), while Kimi K2-Thinking-0905 is better at 0 benchmarks.

Atria Dawn Preview significantly outperforms across most benchmarks.

Sun Sep 20 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-Thinking-0905 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-Thinking-0905
1.0Tparameters
744.0B
Atria Dawn Preview
1000.0B
Kimi K2-Thinking-0905

Context Window

Maximum input and output token capacity

Only Kimi K2-Thinking-0905 specifies input context (262,144 tokens). Only Kimi K2-Thinking-0905 specifies output context (262,144 tokens).

Shanghai AI Laboratory
Atria Dawn Preview
Input- tokens
Output- tokens
Moonshot AI
Kimi K2-Thinking-0905
Input262,144 tokens
Output262,144 tokens
Sun Sep 20 2026 • llm-stats.com

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-Thinking-0905

MIT

Open weights

Release Timeline

When each model was launched

Atria Dawn Preview was released on 2026-09-11, while Kimi K2-Thinking-0905 was released on 2025-09-05.

Atria Dawn Preview is 12 months newer than Kimi K2-Thinking-0905.

Atria Dawn Preview

Sep 11, 2026

1 weeks ago

1.0yr newer
Kimi K2-Thinking-0905

Sep 5, 2025

1.0 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 Kimi K2-Thinking-0905 side-by-side, then vote on the output you prefer.

Atria Dawn Preview
✓ Preferred
Kimi K2-Thinking-0905
Open in Playground

FAQ

Common questions about Atria Dawn Preview vs Kimi K2-Thinking-0905.

Which is better, Atria Dawn Preview or Kimi K2-Thinking-0905?

Atria Dawn Preview leads the LLM Stats Score 52.3 to 36.0. Atria Dawn Preview is made by Shanghai AI Laboratory and Kimi K2-Thinking-0905 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-Thinking-0905 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-Thinking-0905 scores AIME 2025: 100.0%, HMMT 2025: 97.5%, MMLU-Redux: 94.4%, FRAMES: 87.0%, MMLU-Pro: 84.6%.

What are the context window sizes for Atria Dawn Preview and Kimi K2-Thinking-0905?

Atria Dawn Preview supports an unknown number of tokens and Kimi K2-Thinking-0905 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-Thinking-0905?

Key differences include LLM Stats Score (52.3 vs 36.0). See the full comparison above for benchmark-by-benchmark results.

Who makes Atria Dawn Preview and Kimi K2-Thinking-0905?

Atria Dawn Preview is developed by Shanghai AI Laboratory and Kimi K2-Thinking-0905 is developed by Moonshot AI.

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