GPT-5 Codex vs MiniMax M1

Compare GPT-5 Codex by OpenAI against MiniMax M1 by MiniMax, tested across 23 shared challenges. Updated April 2026.

Which is better, GPT-5 Codex or MiniMax M1?

GPT-5 Codex and MiniMax M1 are both competitive models. Compare their real outputs side by side below.

Key Differences Between GPT-5 Codex and MiniMax M1

GPT-5 Codex is made by openai while MiniMax M1 is from minimax.

Our Verdict
GPT-5 Codex
GPT-5 Codex
MiniMax M1
MiniMax M1Runner-up

No community votes yet. On paper, GPT-5 Codex has the edge — newer, major provider backing.

Too close to call
Writing DNA

Style Comparison

Similarity
94%

MiniMax M1 uses 3.2x more bold

GPT-5 Codex
MiniMax M1
64%Vocabulary53%
17wSentence Length17w
0.38Hedging0.51
2.3Bold7.4
3.5Lists6.2
0.15Emoji0.10
0.49Headings0.86
0.05Transitions0.03
Based on 13 + 14 text responses
vs

Ask them anything yourself

GPT-5 CodexMiniMax M1

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

Common questions