ChatGPT-4o (March 2025) vs GPT-4o (Omni)

Compare ChatGPT-4o (March 2025) and GPT-4o (Omni), both from OpenAI, in 7 community votes, gpt-4o (omni) wins 57% of head-to-head duels, context windows of 128K vs 128K, tested across 32 shared challenges. Updated February 2026.

In 7 community votes, GPT-4o (Omni) wins 57% of head-to-head duels. GPT-4o (Omni) leads in Conversation. Based on blind community voting from the RIVAL open dataset of 7+ human preference judgments for this pair.