Model Comparison

Claude Opus 5 vs Magistral Small 2506Which is better in 2026?

Comparing Claude Opus 5 and Magistral Small 2506 across benchmarks, pricing, and capabilities.

Verdict: Claude Opus 5 vs Magistral Small 2506 — which is better?

Claude Opus 5 (by Anthropic) and Magistral Small 2506 (by Mistral 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.

Choose Claude Opus 5 if…

  • you want the most recent training data — it shipped Jul 2026

Choose Magistral Small 2506 if…

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

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

Claude Opus 5 and Magistral Small 2506don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only Claude Opus 5 specifies input context (1,000,000 tokens). Only Claude Opus 5 specifies output context (128,000 tokens).

Anthropic
Claude Opus 5
Input1,000,000 tokens
Output128,000 tokens
Mistral AI
Magistral Small 2506
Input- tokens
Output- tokens
Sun Jul 26 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Claude Opus 5 supports multimodal inputs, whereas Magistral Small 2506 does not.

Claude Opus 5 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude Opus 5

Text
Images
Audio
Video

Magistral Small 2506

Text
Images
Audio
Video

License

Usage and distribution terms

Claude Opus 5 is licensed under a proprietary license, while Magistral Small 2506 uses Apache 2.0.

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

Claude Opus 5

Proprietary

Closed source

Magistral Small 2506

Apache 2.0

Open weights

Release Timeline

When each model was launched

Claude Opus 5 was released on 2026-07-24, while Magistral Small 2506 was released on 2025-06-10.

Claude Opus 5 is 14 months newer than Magistral Small 2506.

Claude Opus 5

Jul 24, 2026

1 days ago

1.1yr newer
Magistral Small 2506

Jun 10, 2025

1.1 years ago

Knowledge Cutoff

When training data ends

Magistral Small 2506 has a documented knowledge cutoff of 2025-06-01, while Claude Opus 5's cutoff date is not specified.

We can confirm Magistral Small 2506's training data extends to 2025-06-01, but cannot make a direct comparison without Claude Opus 5's cutoff date.

Claude Opus 5

—

Magistral Small 2506

Jun 2025

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Anthropic
Larger context window (1,000,000 tokens)
Supports multimodal inputs
Mistral AI
Has open weights

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Claude Opus 5 and Magistral Small 2506 side-by-side, then vote on the output you prefer.

Claude Opus 5
✓ Preferred
Magistral Small 2506
Open in Playground
AI Model Comparison Table
Feature
Anthropic
Claude Opus 5
Mistral AI
Magistral Small 2506

FAQ

Common questions about Claude Opus 5 vs Magistral Small 2506.

Which is better, Claude Opus 5 or Magistral Small 2506?

Claude Opus 5 (Anthropic) and Magistral Small 2506 (Mistral AI) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does Claude Opus 5 compare to Magistral Small 2506 in benchmarks?

Claude Opus 5 scores BrowseComp: 90.8%, BioMysteryBench: 90.1%, OSWorld 2.0: 70.6%, DeepSWE 1.1: 68.8%, Humanity's Last Exam: 64.7%. Magistral Small 2506 scores AIME 2024: 70.7%, GPQA: 68.2%, AIME 2025: 62.8%, LiveCodeBench: 51.3%.

What are the context window sizes for Claude Opus 5 and Magistral Small 2506?

Claude Opus 5 supports 1.0M tokens and Magistral Small 2506 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 Opus 5 and Magistral Small 2506?

Key differences include multimodal support (yes vs no), licensing (Proprietary vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Opus 5 and Magistral Small 2506?

Claude Opus 5 is developed by Anthropic and Magistral Small 2506 is developed by Mistral AI.

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