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Claude Sonnet 5.5 vs Magistral Medium

Claude Sonnet 5.5 leads the LLM Stats Score 58.7 to 13.1.

Anthropic · Mistral AI · Updated for 2026

Which is better?

Claude Sonnet 5.5 leads the overall LLM Stats Score 58.7 to 13.1, ranking #2 overall.

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

Choose Claude Sonnet 5.5

  • overall performance matters — it scores 58.7 and ranks #2 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 Sonnet 5.5
Anthropic
Magistral Medium
Mistral AI
Core performance indexes
LLM Stats Score
58.7
#2
13.1
#263
Reasoning
57.2
#3
13.3
#254
Coding
48.3
#2
3.4
#230
Cost, coverage & limits
Benchmark wins
—
—
Input price
$2.00 / M
— / M
Output price
$10.00 / M
— / M
Context window
1,000,000
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Claude Sonnet 5.5
Magistral Medium
Math
37.6#30
11.4#248
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

47 reported for Claude Sonnet 5.5 · 6 for Magistral Medium

No common benchmarks found

Claude Sonnet 5.5 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 Sonnet 5.5 specifies input context (1,000,000 tokens). Only Claude Sonnet 5.5 specifies output context (128,000 tokens).

Anthropic
Claude Sonnet 5.5
Input1,000,000 tokens
Output128,000 tokens
Mistral AI
Magistral Medium
Input- tokens
Output- tokens
Wed Oct 14 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Claude Sonnet 5.5 and Magistral Medium support multimodal inputs.

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

Claude Sonnet 5.5

Text
Images
Audio
Video

Magistral Medium

Text
Images
Audio
Video

License

Usage and distribution terms

Claude Sonnet 5.5 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 Sonnet 5.5

Proprietary

Closed source

Magistral Medium

Apache 2.0

Open weights

Release Timeline

When each model was launched

Claude Sonnet 5.5 was released on 2026-09-28, while Magistral Medium was released on 2025-06-10.

Claude Sonnet 5.5 is 16 months newer than Magistral Medium.

Claude Sonnet 5.5

Sep 28, 2026

2 weeks ago

1.3yr newer
Magistral Medium

Jun 10, 2025

1.3 years ago

Knowledge Cutoff

When training data ends

Claude Sonnet 5.5 has a knowledge cutoff of 2026-06-01, while Magistral Medium has a cutoff of 2025-06-01.

Claude Sonnet 5.5 has more recent training data (up to 2026-06-01), making it potentially better informed about events through that date compared to Magistral Medium (2025-06-01).

Claude Sonnet 5.5

Jun 2026

1 yr newer
Magistral Medium

Jun 2025

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Claude Sonnet 5.5 and Magistral Medium side-by-side, then vote on the output you prefer.

Claude Sonnet 5.5
✓ Preferred
Magistral Medium
Open in Playground

FAQ

Common questions about Claude Sonnet 5.5 vs Magistral Medium.

Which is better, Claude Sonnet 5.5 or Magistral Medium?

Claude Sonnet 5.5 leads the LLM Stats Score 58.7 to 13.1. Claude Sonnet 5.5 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 Sonnet 5.5 compare to Magistral Medium in benchmarks?

Claude Sonnet 5.5 scores BenchCAD (with Python tool): 96.3%, ArXivMath (with tools): 95.2%, Global-MMLU: 92.1%, MILU: 91.6%, SWE-bench Multilingual: 90.3%. 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 Sonnet 5.5 and Magistral Medium?

Claude Sonnet 5.5 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 Sonnet 5.5 and Magistral Medium?

Key differences include LLM Stats Score (58.7 vs 13.1), licensing (Proprietary vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Sonnet 5.5 and Magistral Medium?

Claude Sonnet 5.5 is developed by Anthropic and Magistral Medium is developed by Mistral AI.

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