GPT-5.1-Codex-Mini vs MiniMax M1

Compare GPT-5.1-Codex-Mini by OpenAI against MiniMax M1 by MiniMax, context windows of 400K vs 1.0M, tested across 26 shared challenges. Updated April 2026.

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

GPT-5.1-Codex-Mini and MiniMax M1 are both competitive models. GPT-5.1-Codex-Mini costs $1.5/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-Mini and MiniMax M1

GPT-5.1-Codex-Mini is made by openai while MiniMax M1 is from minimax. GPT-5.1-Codex-Mini has a 400K token context window compared to MiniMax M1's 1000K. On pricing, GPT-5.1-Codex-Mini costs $1.5/M input tokens vs $0.3/M for MiniMax M1.

Our Verdict
GPT-5.1-Codex-Mini
GPT-5.1-Codex-Mini
MiniMax M1
MiniMax M1

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

MiniMax M1 is 3.6x cheaper per token — worth considering if cost matters.

Too close to call
Writing DNA

Style Comparison

Similarity
98%

MiniMax M1 uses 10.4x more emoji

GPT-5.1-Codex-Mini
MiniMax M1
65%Vocabulary53%
20wSentence Length17w
0.56Hedging0.51
3.3Bold7.4
3.4Lists6.2
0.00Emoji0.10
0.08Headings0.86
0.05Transitions0.03
Based on 13 + 14 text responses
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GPT-5.1-Codex-MiniMiniMax M1

Some models write identically. You are paying for the brand.

178 models fingerprinted across 32 writing dimensions. Free research.

Model Similarity Index

185x

price gap between models that write identically

178

models

12

clone pairs

32

dimensions

Devstral M / S
95.7%
Qwen3 Coder / Flash
95.6%
GPT-5.4 / Mini
93.3%

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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