Claude Sonnet 4.5 vs Pixtral Large
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
Claude Sonnet 4.5 by Anthropic wins on 11 of 14 benchmarks against Pixtral Large by Mistral, which leads on 3. 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, Claude Sonnet 4.5 scores 1380 on Chatbot Arena ELO compared to Pixtral Large's 1270, while Claude Sonnet 4.5 scores 83.0% on MMLU-Pro compared to Pixtral Large's 70.0%.
Coding: In coding, Claude Sonnet 4.5 scores 90.0% on HumanEval+ compared to Pixtral Large's 80.0%, while Claude Sonnet 4.5 scores 77.2% on SWE-bench Verified compared to Pixtral Large's 35.0%, while Claude Sonnet 4.5 scores 62.0% on LiveCodeBench compared to Pixtral Large's 40.0%.
Math: In math, Claude Sonnet 4.5 scores 87.0% on MATH compared to Pixtral Large's 74.0%, while Claude Sonnet 4.5 scores 95.5% on GSM8K compared to Pixtral Large's 90.0%.
Reasoning: In reasoning, Claude Sonnet 4.5 scores 83.4% on GPQA Diamond compared to Pixtral Large's 48.0%, while Claude Sonnet 4.5 scores 45.0% on ARC-AGI compared to Pixtral Large's 22.0%.
Context: In context, Claude Sonnet 4.5 scores 1.0M on Context Length compared to Pixtral Large's 131K.
Pricing Comparison
Claude Sonnet 4.5 costs $3.0/1M input tokens and $15.0/1M output tokens, while Pixtral Large costs $2.0/1M input and $6.0/1M output. Pixtral Large is the more affordable option for API usage.
Speed Comparison
Claude Sonnet 4.5 generates output at 67 tok/s compared to Pixtral Large's 60 tok/s, and the time to first token is 1170 ms for Claude Sonnet 4.5 versus 400 ms for Pixtral Large. Claude Sonnet 4.5 delivers faster throughput.
Verdict
For developers prioritizing coding and general intelligence and math and speed, Claude Sonnet 4.5 has the edge. For those who value affordability, Pixtral Large is the stronger choice.
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Claude Sonnet 4.5 vs Pixtral Large — FAQ
Which is better, Claude Sonnet 4.5 or Pixtral Large?
Claude Sonnet 4.5 wins on more benchmarks overall (11 vs 3). However, the best choice depends on your specific needs — each model excels in different areas.
How does Claude Sonnet 4.5 compare to Pixtral Large for coding?
Claude Sonnet 4.5 is better for coding, scoring 77.2% on SWE-bench Verified compared to 35.0%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is Claude Sonnet 4.5 cheaper than Pixtral Large?
Yes, Pixtral Large is cheaper. Claude Sonnet 4.5 costs $3.0/1M input and $15.0/1M output tokens. Pixtral Large costs $2.0/1M input and $6.0/1M output tokens.
Which is faster, Claude Sonnet 4.5 or Pixtral Large?
Claude Sonnet 4.5 is faster, generating output at 67 tok/s compared to 60 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the Claude Sonnet 4.5 vs Pixtral Large comparison cover?
This comparison covers 14 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.