ChatGPT-4o (March 2025) vs GPT-5 Nano

Compare ChatGPT-4o (March 2025) and GPT-5 Nano, both from OpenAI, in 1 community votes, chatgpt-4o (march 2025) and gpt-5 nano are closely matched, tested across 27 shared challenges. Updated February 2026.

In 1 community votes, ChatGPT-4o (March 2025) and GPT-5 Nano are closely matched. Based on blind community voting from the Rival open dataset of 1+ human preference judgments for this pair.

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