Gemini 2.5 Flash Preview vs GPT-5.2 Pro
Compare Gemini 2.5 Flash Preview by Google AI against GPT-5.2 Pro by OpenAI, context windows of 1.0M vs 400K, tested across 13 shared challenges.
Our Verdict
GPT-5.2 Pro
Gemini 2.5 Flash PreviewRunner-up
No community votes yet. On paper, GPT-5.2 Pro has the edge — bigger model tier, newer.
Gemini 2.5 Flash Preview is 280x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Gemini 2.5 Flash Preview
Input
$0.15
140× cheaper
Output
$0.60
280× cheaper
GPT-5.2 Pro
Input
$21.00
Output
$168.00
Gemini 2.5 Flash Preview is cheaper on both — 140× input, 280× output
Writing DNA
Style Comparison
Similarity
18%
Gemini 2.5 Flash Preview uses 15.0x more transitions
Gemini 2.5 Flash Preview
GPT-5.2 Pro
51%Vocabulary62%
15wSentence Length19w
0.70Hedging0.39
4.1Bold8.6
3.3Lists3.8
0.00Emoji0.00
0.09Headings1.17
0.24Transitions0.02
Based on 12 + 10 text responses
Research
What we learned reading every model
FAQ
