GPT-5 Pro vs Mistral Large

Compare GPT-5 Pro by OpenAI against Mistral Large by Mistral AI, context windows of 400K vs 32K, tested across 22 shared challenges. Updated April 2026.

Which is better, GPT-5 Pro or Mistral Large?

GPT-5 Pro and Mistral Large are both competitive models. GPT-5 Pro costs $15/M input tokens vs $8/M for Mistral Large. Context windows: 400K vs 32K tokens. Compare their real outputs side by side below.

Key Differences Between GPT-5 Pro and Mistral Large

GPT-5 Pro is made by openai while Mistral Large is from mistral. GPT-5 Pro has a 400K token context window compared to Mistral Large's 32K. On pricing, GPT-5 Pro costs $15/M input tokens vs $8/M for Mistral Large.

Our Verdict
GPT-5 Pro
GPT-5 Pro
Mistral Large
Mistral LargeRunner-up

No community votes yet. On paper, GPT-5 Pro has the edge — bigger model tier, newer, bigger context window, major provider backing.

Mistral Large is 5.0x cheaper per token — worth considering if cost matters.

Slight edge
Writing DNA

Style Comparison

Similarity
97%

Mistral Large uses 889.7x more bold

GPT-5 Pro
Mistral Large
65%Vocabulary49%
15wSentence Length19w
0.32Hedging0.86
0.0Bold8.9
2.9Lists5.4
0.00Emoji0.31
0.00Headings1.01
0.01Transitions0.10
Based on 11 + 16 text responses
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GPT-5 ProMistral Large

279 AI models invented the same fake scientist.

We read every word. 250 models. 2.14 million words. This is what we found.

AI Hallucination Index 2026
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