GPT OSS 120B vs Gemini 2.5 Pro (I/O Edition)

Compare GPT OSS 120B by OpenAI against Gemini 2.5 Pro (I/O Edition) by Google AI, in 12 community votes, gemini 2.5 pro (i/o edition) wins 100% of head-to-head duels, tested across 35 shared challenges. Updated February 2026.

In 12 community votes, Gemini 2.5 Pro (I/O Edition) wins 100% of head-to-head duels. Gemini 2.5 Pro (I/O Edition) leads in Image Generation, Reasoning. Based on blind community voting from the Rival open dataset of 12+ human preference judgments for this pair.