GPT-5 vs Mistral Medium 3.1
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
GPT-5 by OpenAI wins on 11 of 16 benchmarks against Mistral Medium 3.1 by Mistral, which leads on 5. 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, GPT-5 scores 1390 on Chatbot Arena ELO compared to Mistral Medium 3.1's 1250, while GPT-5 scores 86.0% on MMLU-Pro compared to Mistral Medium 3.1's 66.0%.
Coding: In coding, GPT-5 scores 92.0% on HumanEval+ compared to Mistral Medium 3.1's 77.0%, while GPT-5 scores 74.9% on SWE-bench Verified compared to Mistral Medium 3.1's 28.0%, while GPT-5 scores 78.0% on LiveCodeBench compared to Mistral Medium 3.1's 34.0%, while GPT-5 scores 37.8 on AA Coding Index compared to Mistral Medium 3.1's 20.5.
Math: In math, GPT-5 scores 94.6% on MATH compared to Mistral Medium 3.1's 68.0%, while GPT-5 scores 98.0% on GSM8K compared to Mistral Medium 3.1's 86.0%.
Reasoning: In reasoning, GPT-5 scores 87.3% on GPQA Diamond compared to Mistral Medium 3.1's 40.0%, while GPT-5 scores 50.0% on ARC-AGI compared to Mistral Medium 3.1's 18.0%.
Context: In context, GPT-5 scores 400K on Context Length compared to Mistral Medium 3.1's 131K.
Pricing Comparison
GPT-5 costs $1.3/1M input tokens and $10.0/1M output tokens, while Mistral Medium 3.1 costs $0.40/1M input and $2.0/1M output. Mistral Medium 3.1 is the more affordable option for API usage.
Speed Comparison
GPT-5 generates output at 100 tok/s compared to Mistral Medium 3.1's 110 tok/s, and the time to first token is 320 ms for GPT-5 versus 200 ms for Mistral Medium 3.1. Mistral Medium 3.1 delivers faster throughput.
Verdict
For developers prioritizing coding and general intelligence and math, GPT-5 has the edge. For those who value affordability and speed, Mistral Medium 3.1 is the stronger choice.
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GPT-5 vs Mistral Medium 3.1 — FAQ
Which is better, GPT-5 or Mistral Medium 3.1?
GPT-5 wins on more benchmarks overall (11 vs 5). However, the best choice depends on your specific needs — each model excels in different areas.
How does GPT-5 compare to Mistral Medium 3.1 for coding?
GPT-5 is better for coding, scoring 74.9% on SWE-bench Verified compared to 28.0%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is GPT-5 cheaper than Mistral Medium 3.1?
Yes, Mistral Medium 3.1 is cheaper. GPT-5 costs $1.3/1M input and $10.0/1M output tokens. Mistral Medium 3.1 costs $0.40/1M input and $2.0/1M output tokens.
Which is faster, GPT-5 or Mistral Medium 3.1?
Mistral Medium 3.1 is faster, generating output at 110 tok/s compared to 100 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the GPT-5 vs Mistral Medium 3.1 comparison cover?
This comparison covers 16 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.