Claude Sonnet 4.5 vs Mistral Large 25.12
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
Claude Sonnet 4.5 by Anthropic wins on 12 of 18 benchmarks against Mistral Large 25.12 by Mistral, which leads on 6. This head-to-head comparison covers coding, math, reasoning, speed, and pricing metrics from our benchmark data.
Category-by-Category Breakdown
General Intelligence: In general intelligence, Mistral Large 25.12 scores 1418 on Chatbot Arena ELO compared to Claude Sonnet 4.5's 1380, while Claude Sonnet 4.5 scores 83.0% on MMLU-Pro compared to Mistral Large 25.12's 73.0%, while Claude Sonnet 4.5 scores 21.2 on AA Intelligence Index compared to Mistral Large 25.12's 9.7.
Coding: In coding, Claude Sonnet 4.5 scores 90.0% on HumanEval+ compared to Mistral Large 25.12's 82.0%, while Claude Sonnet 4.5 scores 77.2% on SWE-bench Verified compared to Mistral Large 25.12's 42.0%, while Claude Sonnet 4.5 scores 62.0% on LiveCodeBench compared to Mistral Large 25.12's 44.0%, while Claude Sonnet 4.5 scores 52.1 on AA Coding Index compared to Mistral Large 25.12's 20.1.
Math: In math, Claude Sonnet 4.5 scores 87.0% on MATH compared to Mistral Large 25.12's 78.0%, while Claude Sonnet 4.5 scores 95.5% on GSM8K compared to Mistral Large 25.12's 91.0%.
Reasoning: In reasoning, Claude Sonnet 4.5 scores 83.4% on GPQA Diamond compared to Mistral Large 25.12's 52.0%, while Claude Sonnet 4.5 scores 45.0% on ARC-AGI compared to Mistral Large 25.12's 28.0%, while Claude Sonnet 4.5 scores 17.5 on AA Agentic Index compared to Mistral Large 25.12's 2.4.
Context: In context, Claude Sonnet 4.5 scores 1.0M on Context Length compared to Mistral Large 25.12's 262K.
Pricing Comparison
Claude Sonnet 4.5 costs $3.0/1M input tokens and $15.0/1M output tokens, while Mistral Large 25.12 costs $0.50/1M input and $1.5/1M output. Mistral Large 25.12 is the more affordable option for API usage.
Speed Comparison
Claude Sonnet 4.5 generates output at 67 tok/s compared to Mistral Large 25.12's 70 tok/s, and the time to first token is 1170 ms for Claude Sonnet 4.5 versus 380 ms for Mistral Large 25.12. Mistral Large 25.12 delivers faster throughput.
Verdict
For developers prioritizing coding and math, Claude Sonnet 4.5 has the edge. For those who value general intelligence and affordability and speed, Mistral Large 25.12 is the stronger choice.
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Claude Sonnet 4.5 vs Mistral Large 25.12 — FAQ
Which is better, Claude Sonnet 4.5 or Mistral Large 25.12?
Claude Sonnet 4.5 wins on more benchmarks overall (12 vs 6). However, the best choice depends on your specific needs — each model excels in different areas.
How does Claude Sonnet 4.5 compare to Mistral Large 25.12 for coding?
Claude Sonnet 4.5 is better for coding, scoring 77.2% on SWE-bench Verified compared to 42.0%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is Claude Sonnet 4.5 cheaper than Mistral Large 25.12?
Yes, Mistral Large 25.12 is cheaper. Claude Sonnet 4.5 costs $3.0/1M input and $15.0/1M output tokens. Mistral Large 25.12 costs $0.50/1M input and $1.5/1M output tokens.
Which is faster, Claude Sonnet 4.5 or Mistral Large 25.12?
Mistral Large 25.12 is faster, generating output at 70 tok/s compared to 67 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the Claude Sonnet 4.5 vs Mistral Large 25.12 comparison cover?
This comparison covers 18 benchmarks including Chatbot Arena ELO, MMLU-Pro, HumanEval+, MATH, GPQA Diamond, SWE-bench Verified, Output Speed, LiveCodeBench, and more. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.