Google: Gemini 2.5 Flash Preview 09-2025 vs GPT-4.1
Compare Google: Gemini 2.5 Flash Preview 09-2025 by Google AI against GPT-4.1 by OpenAI, context windows of 1.0M vs 1.0M, tested across 51 shared challenges.
Our Verdict
Google: Gemini 2.5 Flash Preview 09-2025
GPT-4.1
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Google: Gemini 2.5 Flash Preview 09-2025 is 3.2x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Google: Gemini 2.5 Flash Preview 09-2025
Input
$0.30
6.7× cheaper
Output
$2.50
3.2× cheaper
GPT-4.1
Input
$2.00
Output
$8.00
Google: Gemini 2.5 Flash Preview 09-2025 is cheaper on both — 6.7× input, 3.2× output
Writing DNA
Style Comparison
Similarity
67%
Google: Gemini 2.5 Flash Preview 09-2025 uses 3.1x more transitions
Google: Gemini 2.5 Flash Preview 09-2025
GPT-4.1
53%Vocabulary58%
19wSentence Length19w
0.30Hedging0.38
5.8Bold9.0
3.1Lists6.1
0.14Emoji0.24
0.93Headings1.01
0.22Transitions0.07
Based on 22 + 25 text responses
Research
What we learned reading every model
FAQ
