Claude Opus 4.6
Nothing here. The model returned empty. We stared at it for a while.
Claude Opus 4.6 vs GPT OSS 120B
Compare Claude Opus 4.6 by Anthropic against GPT OSS 120B by OpenAI, context windows of 1.0M vs 131K, tested across 48 shared challenges. Updated April 2026.
Which is better, Claude Opus 4.6 or GPT OSS 120B?
Claude Opus 4.6 and GPT OSS 120B are both competitive models. Claude Opus 4.6 costs $5/M input tokens vs $0.18/M for GPT OSS 120B. Context windows: 1000K vs 131K tokens. Compare their real outputs side by side below.
Key Differences Between Claude Opus 4.6 and GPT OSS 120B
Claude Opus 4.6 is made by anthropic while GPT OSS 120B is from openai. Claude Opus 4.6 has a 1000K token context window compared to GPT OSS 120B's 131K. On pricing, Claude Opus 4.6 costs $5/M input tokens vs $0.18/M for GPT OSS 120B.
Our Verdict
Claude Opus 4.6
GPT OSS 120BRunner-up
No community votes yet. On paper, Claude Opus 4.6 has the edge — newer, bigger context window.
GPT OSS 120B is 31x cheaper per token — worth considering if cost matters.
Too close to call
Writing DNA
Style Comparison
Similarity
97%
GPT OSS 120B uses 6.1x more transitions
Claude Opus 4.6
GPT OSS 120B
53%Vocabulary52%
35wSentence Length19w
0.68Hedging0.28
5.2Bold7.4
2.9Lists1.8
0.21Emoji0.15
1.34Headings0.73
0.03Transitions0.17
Based on 23 + 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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