GPT OSS 20B vs MiniMax M1

Compare GPT OSS 20B by OpenAI against MiniMax M1 by MiniMax, context windows of 131K vs 1.0M, tested across 26 shared challenges. Updated April 2026.

Which is better, GPT OSS 20B or MiniMax M1?

GPT OSS 20B and MiniMax M1 are both competitive models. GPT OSS 20B costs $0.02/M input tokens vs $0.3/M for MiniMax M1. Context windows: 131K vs 1000K tokens. Compare their real outputs side by side below.

Key Differences Between GPT OSS 20B and MiniMax M1

GPT OSS 20B is made by openai while MiniMax M1 is from minimax. GPT OSS 20B has a 131K token context window compared to MiniMax M1's 1000K. On pricing, GPT OSS 20B costs $0.02/M input tokens vs $0.3/M for MiniMax M1.

Our Verdict
GPT OSS 20B
GPT OSS 20B
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.

GPT OSS 20B is 16x cheaper per token — worth considering if cost matters.

Too close to call
Writing DNA

Style Comparison

Similarity
100%

GPT OSS 20B uses 9.8x more transitions

GPT OSS 20B
MiniMax M1
54%Vocabulary53%
17wSentence Length17w
0.26Hedging0.51
5.9Bold7.4
3.3Lists6.2
0.10Emoji0.10
0.75Headings0.86
0.32Transitions0.03
Based on 21 + 14 text responses
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GPT OSS 20BMiniMax 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
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