Claude Sonnet 4 vs GPT OSS 120B

Compare Claude Sonnet 4 by Anthropic against GPT OSS 120B by OpenAI, in 10 community votes, claude sonnet 4 wins 67% of head-to-head duels, context windows of 200K vs 131K, tested across 34 shared challenges. Updated February 2026.

In 10 community votes, Claude Sonnet 4 wins 67% of head-to-head duels. Claude Sonnet 4 leads in Image Generation. Based on blind community voting from the RIVAL open dataset of 10+ human preference judgments for this pair.