Gemini 2.5 Pro (I/O Edition) vs GPT-5 Pro
Compare Gemini 2.5 Pro (I/O Edition) by Google AI against GPT-5 Pro by OpenAI, tested across 34 shared challenges.
Our Verdict
Gemini 2.5 Pro (I/O Edition)
GPT-5 Pro
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Gemini 2.5 Pro (I/O Edition) is 12x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Gemini 2.5 Pro (I/O Edition)
Input
$1.25
12× cheaper
Output
$10.00
12× cheaper
GPT-5 Pro
Input
$15.00
Output
$120.00
Gemini 2.5 Pro (I/O Edition) is cheaper on both — 12× input, 12× output
Writing DNA
Style Comparison
Similarity
53%
Gemini 2.5 Pro (I/O Edition) uses 578.2x more bold
Gemini 2.5 Pro (I/O Edition)
GPT-5 Pro
58%Vocabulary65%
16wSentence Length15w
0.38Hedging0.32
5.8Bold0.0
5.0Lists2.9
0.00Emoji0.00
0.63Headings0.00
0.01Transitions0.01
Based on 16 + 11 text responses
Research
What we learned reading every model
FAQ
Common questions
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