Claude 3 Opus vs GPT OSS 120B
Compare Claude 3 Opus by Anthropic against GPT OSS 120B by OpenAI, context windows of 200K vs 131K, tested across 12 shared challenges. Updated June 2026.
Which is better, Claude 3 Opus or GPT OSS 120B?
Claude 3 Opus and GPT OSS 120B are both competitive models. Claude 3 Opus costs $15/M input tokens vs $0.18/M for GPT OSS 120B. Context windows: 200K vs 131K tokens. Compare their real outputs side by side below.
Key Differences Between Claude 3 Opus and GPT OSS 120B
Claude 3 Opus is made by anthropic while GPT OSS 120B is from openai. Claude 3 Opus has a 200K token context window compared to GPT OSS 120B's 131K. On pricing, Claude 3 Opus costs $15/M input tokens vs $0.18/M for 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 94x cheaper per token — worth considering if cost matters.
Cost per 1M tokens
GPT OSS 120B is cheaper on both — 83× input, 94× output
Style Comparison
GPT OSS 120B uses 743.4x more bold
