ChatGPT-4o (March 2025) vs DeepSeek R1 0528

Compare ChatGPT-4o (March 2025) by OpenAI against DeepSeek R1 0528 by DeepSeek, in 1 community votes, chatgpt-4o (march 2025) wins 100% of head-to-head duels, context windows of 128K vs 164K, tested across 19 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.

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