Gemini 3.5 Flash vs GPT-5.2 Pro
Compare Gemini 3.5 Flash by Google AI against GPT-5.2 Pro by OpenAI, context windows of 1.0M vs 400K, tested across 31 shared challenges.
Our Verdict
Gemini 3.5 Flash
GPT-5.2 Pro
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Gemini 3.5 Flash is 19x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Gemini 3.5 Flash
Input
$1.50
14× cheaper
Output
$9.00
19× cheaper
GPT-5.2 Pro
Input
$21.00
Output
$168.00
Gemini 3.5 Flash is cheaper on both — 14× input, 19× output
Writing DNA
Style Comparison
Similarity
60%
Gemini 3.5 Flash uses 6.8x more transitions
Gemini 3.5 Flash
GPT-5.2 Pro
59%Vocabulary62%
18wSentence Length19w
0.16Hedging0.39
4.4Bold8.6
3.0Lists3.8
0.00Emoji0.00
0.89Headings1.17
0.11Transitions0.02
Based on 27 + 10 text responses
Research
What we learned reading every model
FAQ
