GPT-4.5 vs OpenAI o3

Compare GPT-4.5 and OpenAI o3, both from OpenAI, in 2 community votes, gpt-4.5 and openai o3 are closely matched, tested across 25 shared challenges. Updated February 2026.

In 2 community votes, GPT-4.5 and OpenAI o3 are closely matched. Based on blind community voting from the RIVAL open dataset of 2+ human preference judgments for this pair.

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