GPT-5.1 Codex Max vs GPT-5.4 Mini
Compare GPT-5.1 Codex Max and GPT-5.4 Mini, both from OpenAI, tested across 52 shared challenges.
Our Verdict
GPT-5.1 Codex Max
GPT-5.4 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
GPT-5.1 Codex Max
Input
—
Output
—
GPT-5.4 Mini
Input
$0.75
Output
$4.50
Writing DNA
Style Comparison
Similarity
38%
GPT-5.4 Mini uses 17.1x more headings
GPT-5.1 Codex Max
GPT-5.4 Mini
60%Vocabulary54%
16wSentence Length20w
0.36Hedging0.72
2.3Bold6.0
4.2Lists8.3
0.00Emoji0.00
0.12Headings2.11
0.03Transitions0.04
Based on 13 + 23 text responses
Research
What we learned reading every model
FAQ
