Gemini Pro 1.0 vs GPT-5.1
Compare Gemini Pro 1.0 by Google AI against GPT-5.1 by OpenAI, context windows of 33K vs 400K, tested across 27 shared challenges.
Our Verdict
GPT-5.1
Gemini Pro 1.0Runner-up
No community votes yet. On paper, GPT-5.1 has the edge — bigger model tier, newer, bigger context window.
Gemini Pro 1.0 is 6.7x cheaper per token — worth considering if cost matters.
Slight edge
API pricing
Cost per 1M tokens
Gemini Pro 1.0
Input
$0.50
2.5× cheaper
Output
$1.50
6.7× cheaper
GPT-5.1
Input
$1.25
Output
$10.00
Gemini Pro 1.0 is cheaper on both — 2.5× input, 6.7× output
Writing DNA
Style Comparison
Similarity
56%
Gemini Pro 1.0 uses 13.9x more transitions
Gemini Pro 1.0
GPT-5.1
61%Vocabulary62%
13wSentence Length19w
0.41Hedging0.29
5.3Bold3.5
5.4Lists7.2
0.00Emoji0.00
0.46Headings0.61
0.38Transitions0.03
Based on 13 + 14 text responses
Research
What we learned reading every model
FAQ
