Model Comparison

Codestral-22B vs Kimi K2 0905Which is better in 2026?

Kimi K2 0905 significantly outperforms across most benchmarks.

Verdict: Codestral-22B vs Kimi K2 0905 — which is better?

Codestral-22B (by Mistral AI) and Kimi K2 0905 (by Moonshot AI) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

Codestral-22B outperforms in 0 benchmarks, while Kimi K2 0905 is better at 1 benchmark (HumanEval). Kimi K2 0905 significantly outperforms across most benchmarks.

Choose Codestral-22B if…

  • you need open weights you can self-host or fine-tune

Choose Kimi K2 0905 if…

  • you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
  • you want the most recent training data — it shipped Sep 2025

Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

Codestral-22B outperforms in 0 benchmarks, while Kimi K2 0905 is better at 1 benchmark (HumanEval).

Kimi K2 0905 significantly outperforms across most benchmarks.

Sat Jul 18 2026 • llm-stats.com

Arena Performance

Human preference votes

Model Size

Parameter count comparison

977.8B diff

Kimi K2 0905 has 977.8B more parameters than Codestral-22B, making it 4404.5% larger.

Mistral AI
Codestral-22B
22.2Bparameters
Moonshot AI
Kimi K2 0905
1.0Tparameters
22.2B
Codestral-22B
1000.0B
Kimi K2 0905

Context Window

Maximum input and output token capacity

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

Mistral AI
Codestral-22B
Input- tokens
Output- tokens
Moonshot AI
Kimi K2 0905
Input262,144 tokens
Output262,144 tokens
Sat Jul 18 2026 • llm-stats.com

License

Usage and distribution terms

Codestral-22B is licensed under MNPL-0.1, while Kimi K2 0905 uses a proprietary license.

License differences may affect how you can use these models in commercial or open-source projects.

Codestral-22B

MNPL-0.1

Open weights

Kimi K2 0905

Proprietary

Closed source

Release Timeline

When each model was launched

Codestral-22B was released on 2024-05-29, while Kimi K2 0905 was released on 2025-09-05.

Kimi K2 0905 is 15 months newer than Codestral-22B.

Codestral-22B

May 29, 2024

2.1 years ago

Kimi K2 0905

Sep 5, 2025

10 months ago

1.3yr newer

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→

Key Takeaways

Mistral AI
Has open weights
Moonshot AI
Larger context window (262,144 tokens)
Higher HumanEval score (94.5% vs 81.1%)

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Codestral-22B and Kimi K2 0905 side-by-side, then vote on the output you prefer.

Codestral-22B
✓ Preferred
Kimi K2 0905
Open in Playground
AI Model Comparison Table
Feature
Mistral AI
Codestral-22B
Moonshot AI
Kimi K2 0905

FAQ

Common questions about Codestral-22B vs Kimi K2 0905.

Which is better, Codestral-22B or Kimi K2 0905?

Kimi K2 0905 significantly outperforms across most benchmarks. Codestral-22B is made by Mistral AI and Kimi K2 0905 is made by Moonshot AI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Codestral-22B compare to Kimi K2 0905 in benchmarks?

Codestral-22B scores HumanEvalFIM-Average: 91.6%, HumanEval: 81.1%, MBPP: 78.2%, Spider: 63.5%, HumanEval-Average: 61.5%. Kimi K2 0905 scores HumanEval: 94.5%, MMLU: 90.2%, MATH: 89.1%, MMLU-Pro: 82.5%, GPQA: 75.8%.

What are the context window sizes for Codestral-22B and Kimi K2 0905?

Codestral-22B supports an unknown number of tokens and Kimi K2 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 Codestral-22B and Kimi K2 0905?

Key differences include licensing (MNPL-0.1 vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes Codestral-22B and Kimi K2 0905?

Codestral-22B is developed by Mistral AI and Kimi K2 0905 is developed by Moonshot AI.

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