GPT-5.1-Codex vs MiniMax M1

Compare GPT-5.1-Codex by OpenAI against MiniMax M1 by MiniMax, in 1 community votes, minimax m1 wins 100% of head-to-head duels, context windows of 400K vs 1.0M, tested across 26 shared challenges. Updated April 2026.

Which is better, GPT-5.1-Codex or MiniMax M1?

MiniMax M1 is the better choice overall, winning 100% of 1 blind community votes on Rival. GPT-5.1-Codex costs $1.25/M input tokens vs $0.3/M for MiniMax M1. Context windows: 400K vs 1000K tokens. Compare their real outputs side by side below.

Key Differences Between GPT-5.1-Codex and MiniMax M1

GPT-5.1-Codex is made by openai while MiniMax M1 is from minimax. GPT-5.1-Codex has a 400K token context window compared to MiniMax M1's 1000K. On pricing, GPT-5.1-Codex costs $1.25/M input tokens vs $0.3/M for MiniMax M1. In community voting, In 1 community votes, MiniMax M1 wins 100% of head-to-head duels.

In 1 community votes, MiniMax M1 wins 100% of head-to-head duels. Based on blind community voting from the Rival open dataset of 1+ human preference judgments for this pair.

Our Verdict
MiniMax M1
MiniMax M1Winner
GPT-5.1-Codex
GPT-5.1-CodexRunner-up

Pick MiniMax M1. In 1 blind votes, MiniMax M1 wins 100% of the time. That's not luck.

MiniMax M1 is 6.1x cheaper per token — worth considering if cost matters.

Clear winner
Writing DNA

Style Comparison

Similarity
95%

MiniMax M1 uses 10.4x more emoji

GPT-5.1-Codex
MiniMax M1
70%Vocabulary53%
17wSentence Length17w
0.39Hedging0.51
3.4Bold7.4
3.5Lists6.2
0.00Emoji0.10
0.50Headings0.86
0.38Transitions0.03
Based on 14 + 14 text responses
vs

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GPT-5.1-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
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