Gemini 2.5 Flash Preview (thinking) vs Google: Gemini 3.1 Flash Lite
Compare Gemini 2.5 Flash Preview (thinking) and Google: Gemini 3.1 Flash Lite, both from Google AI, context windows of 1.0M vs 1.0M, tested across 20 shared challenges.
Our Verdict
Gemini 2.5 Flash Preview (thinking)
Google: Gemini 3.1 Flash Lite
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Too close to call
API pricing
Cost per 1M tokens
Gemini 2.5 Flash Preview (thinking)
Input
$0.17
1.4× cheaper
Output
$3.50
Google: Gemini 3.1 Flash Lite
Input
$0.25
Output
$1.50
2.3× cheaper
Gemini 2.5 Flash Preview (thinking) wins input (1.4× cheaper)·Google: Gemini 3.1 Flash Lite wins output (2.3× cheaper)
Writing DNA
Style Comparison
Similarity
55%
Google: Gemini 3.1 Flash Lite uses 93.4x more headings
Gemini 2.5 Flash Preview (thinking)
Google: Gemini 3.1 Flash Lite
53%Vocabulary59%
14wSentence Length17w
0.38Hedging0.29
4.4Bold5.5
4.1Lists3.3
0.00Emoji0.00
0.00Headings0.93
0.24Transitions0.11
Based on 7 + 27 text responses
Research
What we learned reading every model
FAQ
