Gemini 3 Flash Preview vs GPT-5 Pro
Compare Gemini 3 Flash Preview by Google AI against GPT-5 Pro by OpenAI, context windows of 1.0M vs 400K, tested across 42 shared challenges.
Our Verdict
Gemini 3 Flash Preview
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 3 Flash Preview is 40x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Gemini 3 Flash Preview
Input
$0.50
30× cheaper
Output
$3.00
40× cheaper
GPT-5 Pro
Input
$15.00
Output
$120.00
Gemini 3 Flash Preview is cheaper on both — 30× input, 40× output
Writing DNA
Style Comparison
Similarity
44%
Gemini 3 Flash Preview uses 710.1x more bold
Gemini 3 Flash Preview
GPT-5 Pro
55%Vocabulary65%
18wSentence Length15w
0.42Hedging0.32
7.1Bold0.0
4.5Lists2.9
0.00Emoji0.00
0.84Headings0.00
0.07Transitions0.01
Based on 24 + 11 text responses
Research
What we learned reading every model
FAQ
