GPT-5 Pro
Nothing here. The model returned empty. We stared at it for a while.
GPT-5 Pro vs Gemini 3.1 Pro Preview
Compare GPT-5 Pro by OpenAI against Gemini 3.1 Pro Preview by Google AI, context windows of 400K vs 1.0M, tested across 41 shared challenges. Updated April 2026.
Which is better, GPT-5 Pro or Gemini 3.1 Pro Preview?
GPT-5 Pro and Gemini 3.1 Pro Preview are both competitive models. GPT-5 Pro costs $15/M input tokens vs $2/M for Gemini 3.1 Pro Preview. Context windows: 400K vs 1049K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-5 Pro and Gemini 3.1 Pro Preview
GPT-5 Pro is made by openai while Gemini 3.1 Pro Preview is from google. GPT-5 Pro has a 400K token context window compared to Gemini 3.1 Pro Preview's 1049K. On pricing, GPT-5 Pro costs $15/M input tokens vs $2/M for Gemini 3.1 Pro Preview.
Our Verdict
Gemini 3.1 Pro Preview
GPT-5 ProRunner-up
No community votes yet. On paper, Gemini 3.1 Pro Preview has the edge — newer, bigger context window.
Gemini 3.1 Pro Preview is 10x cheaper per token — worth considering if cost matters.
Too close to call
Writing DNA
Style Comparison
Similarity
99%
Gemini 3.1 Pro Preview uses 487.7x more bold
GPT-5 Pro
Gemini 3.1 Pro Preview
65%Vocabulary54%
15wSentence Length18w
0.32Hedging0.29
0.0Bold4.9
2.9Lists3.3
0.00Emoji0.00
0.00Headings0.72
0.01Transitions0.14
Based on 11 + 23 text responses
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279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
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