Gemini 2.5 Pro Preview 06-05 vs GPT-5.1 Codex Max
Compare Gemini 2.5 Pro Preview 06-05 by Google AI against GPT-5.1 Codex Max by OpenAI, tested across 43 shared challenges. Updated June 2026.
Which is better, Gemini 2.5 Pro Preview 06-05 or GPT-5.1 Codex Max?
Gemini 2.5 Pro Preview 06-05 and GPT-5.1 Codex Max are both competitive models. Compare their real outputs side by side below.
Key Differences Between Gemini 2.5 Pro Preview 06-05 and GPT-5.1 Codex Max
Gemini 2.5 Pro Preview 06-05 is made by google while GPT-5.1 Codex Max is from openai.
API pricing
Per 1M tokens
Gemini 2.5 Pro Preview 06-05
Input
$1.25
Output
$10.00
GPT-5.1 Codex Max
Input
—
Output
—
Our Verdict
Gemini 2.5 Pro Preview 06-05
GPT-5.1 Codex Max
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
Writing DNA
Style Comparison
Similarity
48%
Gemini 2.5 Pro Preview 06-05 uses 7.9x more headings
Gemini 2.5 Pro Preview 06-05
GPT-5.1 Codex Max
51%Vocabulary60%
15wSentence Length16w
0.31Hedging0.36
4.8Bold2.3
4.1Lists4.2
0.00Emoji0.00
0.98Headings0.12
0.05Transitions0.03
Based on 20 + 13 text responses
FAQ
