Gemini 2.5 Pro Experimental vs GPT-5.4 Pro
Compare Gemini 2.5 Pro Experimental by Google AI against GPT-5.4 Pro by OpenAI, context windows of 1.0M vs 1.1M, tested across 16 shared challenges.
Our Verdict
Gemini 2.5 Pro Experimental
GPT-5.4 Pro
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Gemini 2.5 Pro Experimental is 90x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Gemini 2.5 Pro Experimental
Input
$1.00
30× cheaper
Output
$2.00
90× cheaper
GPT-5.4 Pro
Input
$30.00
Output
$180.00
Gemini 2.5 Pro Experimental is cheaper on both — 30× input, 90× output
Writing DNA
Style Comparison
Similarity
45%
Gemini 2.5 Pro Experimental uses 17.3x more transitions
Gemini 2.5 Pro Experimental
GPT-5.4 Pro
54%Vocabulary50%
15wSentence Length35w
0.35Hedging0.70
5.6Bold7.5
3.9Lists8.3
0.00Emoji0.00
0.39Headings2.52
0.17Transitions0.01
Based on 18 + 12 text responses
Research
What we learned reading every model
FAQ
