GPT-5 Codex vs GPT-5.1-Codex
Compare GPT-5 Codex and GPT-5.1-Codex, both from OpenAI, in 24 community votes, gpt-5 codex wins 53% of head-to-head duels, tested across 50 shared challenges.
Web Design: GPT-5 Codex and GPT-5.1-Codex are tied
Image Generation: GPT-5 Codex wins 71% of votes
Reasoning: GPT-5.1-Codex wins 100% of votes
Conversation: GPT-5 Codex and GPT-5.1-Codex are tied
Our Verdict
GPT-5 CodexWinner
GPT-5.1-CodexRunner-up
GPT-5 Codex has the edge overall. In 24 blind votes, GPT-5 Codex wins 53% of the time.
Pick GPT-5 Codex for Image Generation. Pick GPT-5.1-Codex for Reasoning.
Slight edge
API pricing
Cost per 1M tokens
GPT-5 Codex
Input
—
Output
—
GPT-5.1-Codex
Input
$1.25
Output
$10.00
Writing DNA
Style Comparison
Similarity
73%
GPT-5 Codex uses 14.6x more emoji
GPT-5 Codex
GPT-5.1-Codex
64%Vocabulary70%
17wSentence Length17w
0.38Hedging0.39
2.3Bold3.4
3.5Lists3.5
0.15Emoji0.00
0.49Headings0.50
0.05Transitions0.38
Based on 13 + 14 text responses
Research
What we learned reading every model
FAQ
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