GPT-5 Codex vs GPT-5 Mini

Compare GPT-5 Codex and GPT-5 Mini, both from OpenAI, in 13 community votes, gpt-5 codex wins 90% of head-to-head duels, tested across 45 shared challenges. Updated April 2026.

Which is better, GPT-5 Codex or GPT-5 Mini?

GPT-5 Codex is the better choice overall, winning 90% of 13 blind community votes on Rival. Compare their real outputs side by side below.

Key Differences Between GPT-5 Codex and GPT-5 Mini

GPT-5 Codex is made by openai while GPT-5 Mini is from openai. In community voting, In 13 community votes, GPT-5 Codex wins 90% of head-to-head duels.

In 13 community votes, GPT-5 Codex wins 90% of head-to-head duels. GPT-5 Codex leads in Web Design. Based on blind community voting from the Rival open dataset of 13+ human preference judgments for this pair.

Web Design: GPT-5 Codex wins 100% of votes
Image Generation: GPT-5 Codex and GPT-5 Mini are tied
Our Verdict
GPT-5 Codex
GPT-5 CodexWinner
GPT-5 Mini
GPT-5 MiniRunner-up

Pick GPT-5 Codex. In 13 blind votes, GPT-5 Codex wins 90% of the time. That's not luck.

GPT-5 Codex particularly excels in Web Design.

Clear winner
Writing DNA

Style Comparison

Similarity
93%

GPT-5 Codex uses 229.7x more bold

GPT-5 Codex
GPT-5 Mini
64%Vocabulary62%
17wSentence Length21w
0.38Hedging0.16
2.3Bold0.0
3.5Lists3.4
0.15Emoji0.00
0.49Headings0.00
0.05Transitions0.05
Based on 13 + 15 text responses
vs

Ask them anything yourself

GPT-5 CodexGPT-5 Mini

279 AI models invented the same fake scientist.

We read every word. 250 models. 2.14 million words. This is what we found.

AI Hallucination Index 2026
Free preview13 of 58 slides
FAQ

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