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AnthropicClaude Opus 5VSMistral AIMistral Medium 3.5

Analysis by:the whichllmmodel Editorial Team|Updated: June 2026

Our Take

Standardized reasoning and coding benchmarks are currently pending verification for one or both of these models. We recommend testing Claude Opus 5 and Mistral Medium 3.5 directly in their respective provider playgrounds to see which fits your specific prompt styles best.
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Model Specs

Claude Opus 5

Benchmarks & Scores

Coding (swe-bench-pro)
79.2%

complex codebases, multi-file repositories, and architectural planning

Reasoning (gpqa-diamond)
93.7%

graduate-level science QA

Cost & Context

Cost (per 1M tokens)
$10.00Input: $5.00 | Output: $25.00
Context WindowLarger
1.05M tokens
Model Specs

Mistral Medium 3.5

Open SourceAPI Available

Benchmarks & Scores

Coding (swe-bench-pro)
N/A

complex codebases, multi-file repositories, and architectural planning

Reasoning (gpqa-diamond)
N/A

graduate-level science QA

Cost & Context

Cost (per 1M tokens)3.3x cheaper
$3.00Input: $1.50 | Output: $7.50
Context Window
262.14k tokens

Frequently Asked Questions about Claude Opus 5 vs Mistral Medium 3.5

Mistral Medium 3.5 is cheaper than Claude Opus 5. Mistral Medium 3.5 has a blended cost of $3.00/1M tokens, which is about 3.3x cheaper than Claude Opus 5 at $10.00/1M tokens.

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