Google: Gemini 2.5 Flash Lite Preview 09-2025 vs GPT-5.1-Codex-Mini
Compare Google: Gemini 2.5 Flash Lite Preview 09-2025 by Google AI against GPT-5.1-Codex-Mini by OpenAI, context windows of 1.0M vs 400K, tested across 55 shared challenges.
Our Verdict
GPT-5.1-Codex-Mini
Google: Gemini 2.5 Flash Lite Preview 09-2025Runner-up
No community votes yet. On paper, GPT-5.1-Codex-Mini has the edge — bigger model tier, newer.
Google: Gemini 2.5 Flash Lite Preview 09-2025 is 15x 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
15× cheaper
Output
$0.40
15× cheaper
GPT-5.1-Codex-Mini
Input
$1.50
Output
$6.00
Google: Gemini 2.5 Flash Lite Preview 09-2025 is cheaper on both — 15× input, 15× output
Writing DNA
Style Comparison
Similarity
39%
Google: Gemini 2.5 Flash Lite Preview 09-2025 uses 9.6x more headings
Google: Gemini 2.5 Flash Lite Preview 09-2025
GPT-5.1-Codex-Mini
52%Vocabulary65%
19wSentence Length20w
0.35Hedging0.56
6.3Bold3.3
2.8Lists3.4
0.00Emoji0.00
0.74Headings0.08
0.12Transitions0.05
Based on 22 + 13 text responses
Research
What we learned reading every model
FAQ
