GPT OSS 120B
Nothing here. The model returned empty. We stared at it for a while.
GPT OSS 120B vs OpenAI o3
Compare GPT OSS 120B and OpenAI o3, both from OpenAI, tested across 46 shared challenges. Updated March 2026.
Which is better, GPT OSS 120B or OpenAI o3?
GPT OSS 120B and OpenAI o3 are both competitive models. GPT OSS 120B costs $0.18/M input tokens vs $10/M for OpenAI o3. Compare their real outputs side by side below.
Key Differences Between GPT OSS 120B and OpenAI o3
GPT OSS 120B is made by openai while OpenAI o3 is from openai. On pricing, GPT OSS 120B costs $0.18/M input tokens vs $10/M for OpenAI o3.
Our Verdict
GPT OSS 120B
OpenAI o3
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 50x cheaper per token — worth considering if cost matters.
Too close to call
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