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Claude Mythos 5.1 vs Codestral-22B

Claude Mythos 5.1 leads the LLM Stats Score 45.1 to 0.1.

Anthropic · Mistral AI · Updated for 2026

Which is better?

Claude Mythos 5.1 leads the overall LLM Stats Score 45.1 to 0.1, ranking #31 overall.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Claude Mythos 5.1

  • overall performance matters — it scores 45.1 and ranks #31 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 Codestral-22B

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

At a glance

The differences that matter most.

Claude Mythos 5.1
Anthropic
Codestral-22B
Mistral AI
Core performance indexes
LLM Stats Score
45.1
#31
0.1
#324
Reasoning
44.4
#34
-0.1
#316
Coding
37.5
#17
2.5
#223
Cost, coverage & limits
Benchmark wins
—
—
Input price
$10.00 / M
— / M
Output price
$50.00 / M
— / M
Context window
1,000,000
—

Individual benchmarks

1 reported for Claude Mythos 5.1 · 7 for Codestral-22B

No common benchmarks found

Claude Mythos 5.1 and Codestral-22Bdon'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 Claude Mythos 5.1 specifies input context (1,000,000 tokens). Only Claude Mythos 5.1 specifies output context (128,000 tokens).

Anthropic
Claude Mythos 5.1
Input1,000,000 tokens
Output128,000 tokens
Mistral AI
Codestral-22B
Input- tokens
Output- tokens
Wed Sep 09 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Claude Mythos 5.1 supports multimodal inputs, whereas Codestral-22B does not.

Claude Mythos 5.1 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude Mythos 5.1

Text
Images
Audio
Video

Codestral-22B

Text
Images
Audio
Video

License

Usage and distribution terms

Claude Mythos 5.1 is licensed under a proprietary license, while Codestral-22B uses MNPL-0.1.

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

Claude Mythos 5.1

Proprietary

Closed source

Codestral-22B

MNPL-0.1

Open weights

Release Timeline

When each model was launched

Claude Mythos 5.1 was released on 2026-09-01, while Codestral-22B was released on 2024-05-29.

Claude Mythos 5.1 is 28 months newer than Codestral-22B.

Claude Mythos 5.1

Sep 1, 2026

1 weeks ago

2.3yr newer
Codestral-22B

May 29, 2024

2.3 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 Claude Mythos 5.1 and Codestral-22B side-by-side, then vote on the output you prefer.

Claude Mythos 5.1
✓ Preferred
Codestral-22B
Open in Playground

FAQ

Common questions about Claude Mythos 5.1 vs Codestral-22B.

Which is better, Claude Mythos 5.1 or Codestral-22B?

Claude Mythos 5.1 leads the LLM Stats Score 45.1 to 0.1. Claude Mythos 5.1 is made by Anthropic and Codestral-22B is made by Mistral AI. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Claude Mythos 5.1 compare to Codestral-22B in benchmarks?

Claude Mythos 5.1 scores Terminal-Bench 4.0: 60.9%. Codestral-22B scores HumanEvalFIM-Average: 91.6%, HumanEval: 81.1%, MBPP: 78.2%, Spider: 63.5%, HumanEval-Average: 61.5%.

What are the context window sizes for Claude Mythos 5.1 and Codestral-22B?

Claude Mythos 5.1 supports 1.0M tokens and Codestral-22B supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Claude Mythos 5.1 and Codestral-22B?

Key differences include LLM Stats Score (45.1 vs 0.1), multimodal support (yes vs no), licensing (Proprietary vs MNPL-0.1). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Mythos 5.1 and Codestral-22B?

Claude Mythos 5.1 is developed by Anthropic and Codestral-22B is developed by Mistral AI.

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