Gemini 2.5 Pro Preview 06-05 vs GPT-5.1-Codex
Compare Gemini 2.5 Pro Preview 06-05 by Google AI against GPT-5.1-Codex by OpenAI, context windows of 1.0M vs 400K, tested across 43 shared challenges.
Our Verdict
Gemini 2.5 Pro Preview 06-05
GPT-5.1-Codex
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 Pro Preview 06-05
Input
$1.25
Output
$10.00
GPT-5.1-Codex
Input
$1.25
Output
$10.00
Writing DNA
Style Comparison
Similarity
26%
GPT-5.1-Codex uses 7.5x more transitions
Gemini 2.5 Pro Preview 06-05
GPT-5.1-Codex
51%Vocabulary70%
15wSentence Length17w
0.31Hedging0.39
4.8Bold3.4
4.1Lists3.5
0.00Emoji0.00
0.98Headings0.50
0.05Transitions0.38
Based on 20 + 14 text responses
Research
What we learned reading every model
FAQ
