GPT-4o (Omni)
Nothing here. The model returned empty. We stared at it for a while.
GPT-4o (Omni) vs GPT OSS 120B
Compare GPT-4o (Omni) and GPT OSS 120B, both from OpenAI, context windows of 128K vs 131K, tested across 48 shared challenges. Updated April 2026.
Which is better, GPT-4o (Omni) or GPT OSS 120B?
GPT-4o (Omni) and GPT OSS 120B are both competitive models. GPT-4o (Omni) costs $2.5/M input tokens vs $0.18/M for GPT OSS 120B. Context windows: 128K vs 131K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-4o (Omni) and GPT OSS 120B
GPT-4o (Omni) is made by openai while GPT OSS 120B is from openai. GPT-4o (Omni) has a 128K token context window compared to GPT OSS 120B's 131K. On pricing, GPT-4o (Omni) costs $2.5/M input tokens vs $0.18/M for GPT OSS 120B.
Our Verdict
GPT-4o (Omni)
GPT OSS 120B
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
GPT OSS 120B is 13x cheaper per token — worth considering if cost matters.
Too close to call
Writing DNA
Style Comparison
Similarity
98%
GPT OSS 120B uses 6.1x more emoji
GPT-4o (Omni)
GPT OSS 120B
54%Vocabulary52%
18wSentence Length19w
0.72Hedging0.28
7.3Bold7.4
5.6Lists1.8
0.03Emoji0.15
1.40Headings0.73
0.26Transitions0.17
Based on 24 + 21 text responses
vsAsk them anything yourself
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
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