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Claude Sonnet 4.5 vs Mistral Large 3

A detailed comparison of Claude Sonnet 4.5 (Anthropic) and Mistral Large 3 (Mistral) across pricing, performance, and features.

Pricing Comparison

MetricClaude Sonnet 4.5Mistral Large 3Difference
Input / 1M tokens$3.00$2.00-33%
Output / 1M tokens$15.00$5.00-67%
Context window200K128K
Max output16K16.384K

Benchmark Comparison

BenchmarkClaude Sonnet 4.5Mistral Large 3
MMLU-Pro84.5%83%
HumanEval93%91%
GPQA68.2%

Capabilities

CapabilityClaude Sonnet 4.5Mistral Large 3
code
reasoning
text
tool-use
vision

Claude Sonnet 4.5 Strengths

  • Well-tested and stable
  • Strong coding and analysis

Claude Sonnet 4.5 Weaknesses

  • Superseded by Sonnet 4.6
  • Same price as the newer model

Mistral Large 3 Strengths

  • Low output cost ($5/1M) for a flagship
  • Strong multilingual support
  • European data sovereignty option

Mistral Large 3 Weaknesses

  • Lower benchmarks than top-tier competitors
  • Smaller ecosystem

Quick Verdict

Best value: Mistral Large 3 is the more affordable option at $2/$5 per 1M tokens.

Higher benchmarks: Mistral Large 3 scores higher on average across available benchmarks (87.0% avg).

Larger context: Claude Sonnet 4.5 supports 200K tokens.

Choose Mistral Large 3 if cost matters most. Choose Claude Sonnet 4.5 if you need the best possible quality for complex tasks.

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