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Claude Mythos 5.1 vs Magistral Medium

Claude Mythos 5.1 leads the LLM Stats Score 45.1 to 13.1.

Anthropic · Mistral AI · Updated for 2026

Which is better?

Claude Mythos 5.1 leads the overall LLM Stats Score 45.1 to 13.1, ranking #33 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 #33 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 Magistral Medium

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

At a glance

The differences that matter most.

Claude Mythos 5.1
Anthropic
Magistral Medium
Mistral AI
Core performance indexes
LLM Stats Score
45.1
#33
13.1
#247
Reasoning
44.2
#37
13.3
#238
Coding
37.9
#17
3.5
#216
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 · 6 for Magistral Medium

No common benchmarks found

Claude Mythos 5.1 and Magistral Mediumdon'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
Magistral Medium
Input- tokens
Output- tokens
Sun Sep 20 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Claude Mythos 5.1 and Magistral Medium support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Claude Mythos 5.1

Text
Images
Audio
Video

Magistral Medium

Text
Images
Audio
Video

License

Usage and distribution terms

Claude Mythos 5.1 is licensed under a proprietary license, while Magistral Medium uses Apache 2.0.

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

Claude Mythos 5.1

Proprietary

Closed source

Magistral Medium

Apache 2.0

Open weights

Release Timeline

When each model was launched

Claude Mythos 5.1 was released on 2026-09-01, while Magistral Medium was released on 2025-06-10.

Claude Mythos 5.1 is 15 months newer than Magistral Medium.

Claude Mythos 5.1

Sep 1, 2026

2 weeks ago

1.2yr newer
Magistral Medium

Jun 10, 2025

1.3 years ago

Knowledge Cutoff

When training data ends

Magistral Medium has a documented knowledge cutoff of 2025-06-01, while Claude Mythos 5.1's cutoff date is not specified.

We can confirm Magistral Medium's training data extends to 2025-06-01, but cannot make a direct comparison without Claude Mythos 5.1's cutoff date.

Claude Mythos 5.1

—

Magistral Medium

Jun 2025

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Claude Mythos 5.1 and Magistral Medium side-by-side, then vote on the output you prefer.

Claude Mythos 5.1
✓ Preferred
Magistral Medium
Open in Playground

FAQ

Common questions about Claude Mythos 5.1 vs Magistral Medium.

Which is better, Claude Mythos 5.1 or Magistral Medium?

Claude Mythos 5.1 leads the LLM Stats Score 45.1 to 13.1. Claude Mythos 5.1 is made by Anthropic and Magistral Medium 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 Magistral Medium in benchmarks?

Claude Mythos 5.1 scores Terminal-Bench 4.0: 60.9%. Magistral Medium scores AIME 2024: 73.6%, GPQA: 70.8%, AIME 2025: 64.9%, LiveCodeBench: 50.3%, Aider-Polyglot: 47.1%.

What are the context window sizes for Claude Mythos 5.1 and Magistral Medium?

Claude Mythos 5.1 supports 1.0M tokens and Magistral Medium 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 Magistral Medium?

Key differences include LLM Stats Score (45.1 vs 13.1), licensing (Proprietary vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Mythos 5.1 and Magistral Medium?

Claude Mythos 5.1 is developed by Anthropic and Magistral Medium is developed by Mistral AI.

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