Gemini 2.5 Pro Preview 06-05 vs GPT-5.1-Codex-Mini
Compare Gemini 2.5 Pro Preview 06-05 by Google AI against GPT-5.1-Codex-Mini by OpenAI, context windows of 1.0M vs 400K, tested across 44 shared challenges.
Our Verdict
Gemini 2.5 Pro Preview 06-05
GPT-5.1-Codex-Mini
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
1.2× cheaper
Output
$10.00
GPT-5.1-Codex-Mini
Input
$1.50
Output
$6.00
1.7× cheaper
Gemini 2.5 Pro Preview 06-05 wins input (1.2× cheaper)·GPT-5.1-Codex-Mini wins output (1.7× cheaper)
Writing DNA
Style Comparison
Similarity
30%
Gemini 2.5 Pro Preview 06-05 uses 12.7x more headings
Gemini 2.5 Pro Preview 06-05
GPT-5.1-Codex-Mini
51%Vocabulary65%
15wSentence Length20w
0.31Hedging0.56
4.8Bold3.3
4.1Lists3.4
0.00Emoji0.00
0.98Headings0.08
0.05Transitions0.05
Based on 20 + 13 text responses
Research
What we learned reading every model
FAQ
