GPT-5.1 vs MiniMax M2-her

Compare GPT-5.1 by OpenAI against MiniMax M2-her by MiniMax, context windows of 400K vs 66K, tested across 52 shared challenges. Updated April 2026.

Which is better, GPT-5.1 or MiniMax M2-her?

GPT-5.1 and MiniMax M2-her are both competitive models. GPT-5.1 costs $1.25/M input tokens vs $0.3/M for MiniMax M2-her. Context windows: 400K vs 66K tokens. Compare their real outputs side by side below.

Key Differences Between GPT-5.1 and MiniMax M2-her

GPT-5.1 is made by openai while MiniMax M2-her is from minimax. GPT-5.1 has a 400K token context window compared to MiniMax M2-her's 66K. On pricing, GPT-5.1 costs $1.25/M input tokens vs $0.3/M for MiniMax M2-her.

Our Verdict
GPT-5.1
GPT-5.1
MiniMax M2-her
MiniMax M2-herRunner-up

No community votes yet. On paper, GPT-5.1 has the edge — bigger model tier, bigger context window, major provider backing.

MiniMax M2-her is 8.3x cheaper per token — worth considering if cost matters.

Too close to call
Writing DNA

Style Comparison

Similarity
99%

MiniMax M2-her uses 96.5x more emoji

GPT-5.1
MiniMax M2-her
62%Vocabulary65%
19wSentence Length18w
0.29Hedging0.71
3.5Bold2.0
7.2Lists1.7
0.00Emoji0.96
0.61Headings0.31
0.03Transitions0.21
Based on 14 + 24 text responses
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GPT-5.1MiniMax M2-her

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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