GPT-4.1 Mini vs GPT OSS 120B

Compare GPT-4.1 Mini and GPT OSS 120B, both from OpenAI, in 4 community votes, gpt oss 120b wins 100% of head-to-head duels, context windows of 1.0M vs 131K, tested across 49 shared challenges. Updated April 2026.

Which is better, GPT-4.1 Mini or GPT OSS 120B?

GPT OSS 120B is the better choice overall, winning 100% of 4 blind community votes on Rival. GPT-4.1 Mini costs $0.4/M input tokens vs $0.18/M for GPT OSS 120B. Context windows: 1048K vs 131K tokens. Compare their real outputs side by side below.

Key Differences Between GPT-4.1 Mini and GPT OSS 120B

GPT-4.1 Mini is made by openai while GPT OSS 120B is from openai. GPT-4.1 Mini has a 1048K token context window compared to GPT OSS 120B's 131K. On pricing, GPT-4.1 Mini costs $0.4/M input tokens vs $0.18/M for GPT OSS 120B. In community voting, In 4 community votes, GPT OSS 120B wins 100% of head-to-head duels.

In 4 community votes, GPT OSS 120B wins 100% of head-to-head duels. Based on blind community voting from the Rival open dataset of 4+ human preference judgments for this pair.

Our Verdict
GPT OSS 120B
GPT OSS 120BWinner
GPT-4.1 Mini
GPT-4.1 MiniRunner-up

Pick GPT OSS 120B. In 4 blind votes, GPT OSS 120B wins 100% of the time. That's not luck.

Clear winner
Writing DNA

Style Comparison

Similarity
98%

GPT OSS 120B uses 15.4x more emoji

GPT-4.1 Mini
GPT OSS 120B
59%Vocabulary52%
19wSentence Length19w
0.46Hedging0.28
4.7Bold7.4
4.9Lists1.8
0.00Emoji0.15
0.76Headings0.73
0.17Transitions0.17
Based on 23 + 21 text responses
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GPT-4.1 MiniGPT OSS 120B

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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