Gemini 2.5 Flash Lite Preview 06-17 vs Gemini 3.1 Pro Preview
Compare Gemini 2.5 Flash Lite Preview 06-17 and Gemini 3.1 Pro Preview, both from Google AI, context windows of 1.0M vs 1.0M, tested across 11 shared challenges.
Our Verdict
Gemini 3.1 Pro Preview
Gemini 2.5 Flash Lite Preview 06-17Runner-up
No community votes yet. On paper, Gemini 3.1 Pro Preview has the edge — bigger model tier, newer.
Gemini 2.5 Flash Lite Preview 06-17 is 30x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Gemini 2.5 Flash Lite Preview 06-17
Input
$0.10
20× cheaper
Output
$0.40
30× cheaper
Gemini 3.1 Pro Preview
Input
$2.00
Output
$12.00
Gemini 2.5 Flash Lite Preview 06-17 is cheaper on both — 20× input, 30× output
Writing DNA
Style Comparison
Similarity
55%
Gemini 3.1 Pro Preview uses 14.2x more transitions
Gemini 2.5 Flash Lite Preview 06-17
Gemini 3.1 Pro Preview
61%Vocabulary54%
10wSentence Length18w
0.12Hedging0.29
1.9Bold4.9
4.2Lists3.3
0.00Emoji0.00
0.05Headings0.72
0.00Transitions0.14
Based on 3 + 23 text responses
Research
What we learned reading every model
FAQ
