Gemma 3 27B vs GPT OSS 20B

Compare Gemma 3 27B by Google AI against GPT OSS 20B by OpenAI, in 330 community votes, gpt oss 20b wins 60% of head-to-head duels, tested across 43 shared challenges. Updated February 2026.

In 330 community votes, GPT OSS 20B wins 60% of head-to-head duels. Gemma 3 27B leads in Conversation, Analysis, while GPT OSS 20B leads in Web Design, Reasoning, Image Generation. Based on blind community voting from the RIVAL open dataset of 330+ human preference judgments for this pair.