Gemini Pro 1.0 vs GPT-5.3 Chat
Compare Gemini Pro 1.0 by Google AI against GPT-5.3 Chat by OpenAI, context windows of 33K vs 128K, tested across 26 shared challenges.
Our Verdict
GPT-5.3 Chat
Gemini Pro 1.0Runner-up
No community votes yet. On paper, GPT-5.3 Chat has the edge — newer, bigger context window.
Gemini Pro 1.0 is 9.3x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Gemini Pro 1.0
Input
$0.50
3.5× cheaper
Output
$1.50
9.3× cheaper
GPT-5.3 Chat
Input
$1.75
Output
$14.00
Gemini Pro 1.0 is cheaper on both — 3.5× input, 9.3× output
Writing DNA
Style Comparison
Similarity
48%
Gemini Pro 1.0 uses 45.9x more headings
Gemini Pro 1.0
GPT-5.3 Chat
61%Vocabulary59%
13wSentence Length26w
0.41Hedging0.84
5.3Bold1.7
5.4Lists6.6
0.00Emoji0.00
0.46Headings0.00
0.38Transitions0.25
Based on 13 + 23 text responses
Research
What we learned reading every model
FAQ
