ChatGPT-4o (March 2025) vs o1

Compare ChatGPT-4o (March 2025) and o1, both from OpenAI, in 1 community votes, chatgpt-4o (march 2025) wins 100% of head-to-head duels, context windows of 128K vs 128K, tested across 32 shared challenges. Updated February 2026.

In 1 community votes, ChatGPT-4o (March 2025) wins 100% of head-to-head duels. Based on blind community voting from the RIVAL open dataset of 1+ human preference judgments for this pair.

FAQ