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Atria Dawn Preview vs Kimi K2 Instruct

Atria Dawn Preview leads the LLM Stats Score 52.3 to 21.9.

Shanghai AI Laboratory · Moonshot AI · Updated for 2026

Which is better?

Atria Dawn Preview leads the overall LLM Stats Score 52.3 to 21.9, 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

Choose Kimi K2 Instruct

  • you want predictable pricing at $0.50/M input and $0.50/M output

At a glance

The differences that matter most.

Atria Dawn Preview
Shanghai AI Laboratory
Kimi K2 Instruct
Moonshot AI
Core performance indexes
LLM Stats Score
52.3
#10
21.9
#182
Reasoning
50.5
#12
22.0
#172
Coding
36.2
#22
12.4
#147
Agents
38.8
#10
-1.0
#175
Cost, coverage & limits
Benchmark wins
—
—
Input price
— / M
$0.50 / M
Output price
— / M
$0.50 / M
Context window
—
200,000

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Atria Dawn Preview
Kimi K2 Instruct
Tool use
31.1#12
6.5#146
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

12 reported for Atria Dawn Preview · 38 for Kimi K2 Instruct

No common benchmarks found

Atria Dawn Preview and Kimi K2 Instructdon'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

Model Size

Parameter count comparison

256.0B diff

Kimi K2 Instruct 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 Instruct
1.0Tparameters
744.0B
Atria Dawn Preview
1000.0B
Kimi K2 Instruct

Context Window

Maximum input and output token capacity

Only Kimi K2 Instruct specifies input context (200,000 tokens). Only Kimi K2 Instruct specifies output context (200,000 tokens).

Shanghai AI Laboratory
Atria Dawn Preview
Input- tokens
Output- tokens
Moonshot AI
Kimi K2 Instruct
Input200,000 tokens
Output200,000 tokens
Thu Sep 17 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 Instruct

MIT

Open weights

Release Timeline

When each model was launched

Atria Dawn Preview was released on 2026-09-11, while Kimi K2 Instruct was released on 2025-07-11.

Atria Dawn Preview is 14 months newer than Kimi K2 Instruct.

Atria Dawn Preview

Sep 11, 2026

5 days ago

1.2yr newer
Kimi K2 Instruct

Jul 11, 2025

1.2 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 Instruct side-by-side, then vote on the output you prefer.

Atria Dawn Preview
✓ Preferred
Kimi K2 Instruct
Open in Playground

FAQ

Common questions about Atria Dawn Preview vs Kimi K2 Instruct.

Which is better, Atria Dawn Preview or Kimi K2 Instruct?

Atria Dawn Preview leads the LLM Stats Score 52.3 to 21.9. Atria Dawn Preview is made by Shanghai AI Laboratory and Kimi K2 Instruct 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 Instruct 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 Instruct scores MATH-500: 97.4%, GSM8k: 97.3%, CBNSL: 95.6%, HumanEval: 93.3%, MMLU-Redux: 92.7%.

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

Atria Dawn Preview supports an unknown number of tokens and Kimi K2 Instruct 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 Kimi K2 Instruct?

Key differences include LLM Stats Score (52.3 vs 21.9). See the full comparison above for benchmark-by-benchmark results.

Who makes Atria Dawn Preview and Kimi K2 Instruct?

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

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