Gemini 2.5 Flash Preview vs Gemini 3.6 Flash
Compare Gemini 2.5 Flash Preview and Gemini 3.6 Flash, both from Google AI, context windows of 1.0M vs 1.0M, tested across 26 shared challenges.
Our Verdict
Gemini 3.6 Flash
Gemini 2.5 Flash PreviewRunner-up
No community votes yet. On paper, Gemini 3.6 Flash has the edge — bigger model tier, newer.
Gemini 2.5 Flash Preview is 13x 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
10× cheaper
Output
$0.60
13× cheaper
Gemini 3.6 Flash
Input
$1.50
Output
$7.50
Gemini 2.5 Flash Preview is cheaper on both — 10× input, 13× output
Writing DNA
Style Comparison
Similarity
38%
Gemini 3.6 Flash uses 4.2x more emoji
Gemini 2.5 Flash Preview
Gemini 3.6 Flash
51%Vocabulary60%
15wSentence Length19w
0.70Hedging0.13
4.1Bold5.4
3.3Lists2.7
0.00Emoji0.04
0.09Headings0.99
0.24Transitions0.07
Based on 12 + 27 text responses
Research
What we learned reading every model
FAQ
