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Mistral Medium 3.1 vs GPT-5

Compare Mistral Medium 3.1 by Mistral AI against GPT-5 by OpenAI, in 31 community votes, gpt-5 wins 56% of head-to-head duels, context windows of 131K vs 400K, tested across 47 shared challenges. Updated April 2026.

Which is better, Mistral Medium 3.1 or GPT-5?

GPT-5 is the better choice overall, winning 56% of 31 blind community votes on Rival. Mistral Medium 3.1 costs $0.4/M input tokens vs $1.25/M for GPT-5. Context windows: 131K vs 400K tokens. Compare their real outputs side by side below.

Key Differences Between Mistral Medium 3.1 and GPT-5

Mistral Medium 3.1 is made by mistral while GPT-5 is from openai. Mistral Medium 3.1 has a 131K token context window compared to GPT-5's 400K. On pricing, Mistral Medium 3.1 costs $0.4/M input tokens vs $1.25/M for GPT-5. In community voting, In 31 community votes, GPT-5 wins 56% of head-to-head duels.

In 31 community votes, GPT-5 wins 56% of head-to-head duels. Mistral Medium 3.1 leads in Analysis, Conversation, while GPT-5 leads in Image Generation. Based on blind community voting from the Rival open dataset of 31+ human preference judgments for this pair.

Reasoning: Mistral Medium 3.1 and GPT-5 are tied
Image Generation: GPT-5 wins 100% of votes
Web Design: Mistral Medium 3.1 and GPT-5 are tied
Analysis: Mistral Medium 3.1 wins 67% of votes
Conversation: Mistral Medium 3.1 wins 100% of votes
Our Verdict
GPT-5
GPT-5Winner
Mistral Medium 3.1
Mistral Medium 3.1Runner-up

GPT-5 has the edge overall. In 31 blind votes, GPT-5 wins 56% of the time.

Pick Mistral Medium 3.1 for Conversation, Analysis. Pick GPT-5 for Image Generation. Mistral Medium 3.1 is 5.0x cheaper per token — worth considering if cost matters.

Slight edge
Writing DNA

Style Comparison

Similarity
98%

Mistral Medium 3.1 uses 39.3x more emoji

Mistral Medium 3.1
GPT-5
52%Vocabulary65%
22wSentence Length13w
0.45Hedging0.20
10.4Bold0.2
5.9Lists4.6
0.39Emoji0.00
1.12Headings0.16
0.18Transitions0.03
Based on 22 + 16 text responses
vs

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Mistral Medium 3.1GPT-5

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AI Hallucination Index 2026
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