Gemini 2.5 Flash Preview 05-20 (thinking) vs GPT-4.1
Compare Gemini 2.5 Flash Preview 05-20 (thinking) by Google AI against GPT-4.1 by OpenAI, context windows of 1.0M vs 1.0M, tested across 12 shared challenges.
Our Verdict
Gemini 2.5 Flash Preview 05-20 (thinking)
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.
Too close to call
API pricing
Cost per 1M tokens
Gemini 2.5 Flash Preview 05-20 (thinking)
Input
$0.15
13× cheaper
Output
$3.50
2.3× cheaper
GPT-4.1
Input
$2.00
Output
$8.00
Gemini 2.5 Flash Preview 05-20 (thinking) is cheaper on both — 13× input, 2.3× output
Writing DNA
Style Comparison
Similarity
51%
GPT-4.1 uses 38.5x more hedging
Gemini 2.5 Flash Preview 05-20 (thinking)
GPT-4.1
70%Vocabulary58%
11wSentence Length19w
0.00Hedging0.38
4.2Bold9.0
7.3Lists6.1
0.00Emoji0.24
0.00Headings1.01
0.00Transitions0.07
Based on 3 + 25 text responses
Research
What we learned reading every model
FAQ
