Gemini 2.5 Flash Preview (thinking) vs Gemini 3 Flash Preview
Compare Gemini 2.5 Flash Preview (thinking) and Gemini 3 Flash Preview, both from Google AI, context windows of 1.0M vs 1.0M, tested across 20 shared challenges.
Our Verdict
Gemini 3 Flash Preview
Gemini 2.5 Flash Preview (thinking)Runner-up
No community votes yet. On paper, Gemini 3 Flash Preview has the edge — bigger model tier, newer.
Too close to call
API pricing
Cost per 1M tokens
Gemini 2.5 Flash Preview (thinking)
Input
$0.17
2.9× cheaper
Output
$3.50
Gemini 3 Flash Preview
Input
$0.50
Output
$3.00
1.2× cheaper
Gemini 2.5 Flash Preview (thinking) wins input (2.9× cheaper)·Gemini 3 Flash Preview wins output (1.2× cheaper)
Writing DNA
Style Comparison
Similarity
46%
Gemini 3 Flash Preview uses 84.2x more headings
Gemini 2.5 Flash Preview (thinking)
Gemini 3 Flash Preview
53%Vocabulary55%
14wSentence Length18w
0.38Hedging0.42
4.4Bold7.1
4.1Lists4.5
0.00Emoji0.00
0.00Headings0.84
0.24Transitions0.07
Based on 7 + 24 text responses
Research
What we learned reading every model
FAQ
