Google: Gemini 2.5 Flash Lite Preview 09-2025 vs GPT-5.1
Compare Google: Gemini 2.5 Flash Lite Preview 09-2025 by Google AI against GPT-5.1 by OpenAI, context windows of 1.0M vs 400K, tested across 52 shared challenges.
Our Verdict
GPT-5.1
Google: Gemini 2.5 Flash Lite Preview 09-2025Runner-up
No community votes yet. On paper, GPT-5.1 has the edge — bigger model tier, newer.
Google: Gemini 2.5 Flash Lite Preview 09-2025 is 25x 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
13× cheaper
Output
$0.40
25× cheaper
GPT-5.1
Input
$1.25
Output
$10.00
Google: Gemini 2.5 Flash Lite Preview 09-2025 is cheaper on both — 13× input, 25× output
Writing DNA
Style Comparison
Similarity
43%
Google: Gemini 2.5 Flash Lite Preview 09-2025 uses 4.2x more transitions
Google: Gemini 2.5 Flash Lite Preview 09-2025
GPT-5.1
52%Vocabulary62%
19wSentence Length19w
0.35Hedging0.29
6.3Bold3.5
2.8Lists7.2
0.00Emoji0.00
0.74Headings0.61
0.12Transitions0.03
Based on 22 + 14 text responses
Research
What we learned reading every model
FAQ
