Google: Gemini 2.5 Flash Lite Preview 09-2025 vs Gemini 3.1 Pro Preview
Compare Google: Gemini 2.5 Flash Lite Preview 09-2025 and Gemini 3.1 Pro Preview, both from Google AI, context windows of 1.0M vs 1.0M, tested across 53 shared challenges.
Our Verdict
Gemini 3.1 Pro Preview
Google: Gemini 2.5 Flash Lite Preview 09-2025Runner-up
No community votes yet. On paper, Gemini 3.1 Pro Preview has the edge — bigger model tier, newer.
Google: Gemini 2.5 Flash Lite Preview 09-2025 is 30x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Google: Gemini 2.5 Flash Lite Preview 09-2025
Input
$0.10
20× cheaper
Output
$0.40
30× cheaper
Gemini 3.1 Pro Preview
Input
$2.00
Output
$12.00
Google: Gemini 2.5 Flash Lite Preview 09-2025 is cheaper on both — 20× input, 30× output
Writing DNA
Style Comparison
Similarity
71%
Google: Gemini 2.5 Flash Lite Preview 09-2025
Gemini 3.1 Pro Preview
52%Vocabulary54%
19wSentence Length18w
0.35Hedging0.29
6.3Bold4.9
2.8Lists3.3
0.00Emoji0.00
0.74Headings0.72
0.12Transitions0.14
Based on 22 + 23 text responses
Research
What we learned reading every model
FAQ
