Grok Code Fast 1 vs GPT OSS 120B

Compare Grok Code Fast 1 by xAI against GPT OSS 120B by OpenAI, in 17 community votes, grok code fast 1 wins 54% of head-to-head duels, context windows of 256K vs 131K, tested across 46 shared challenges. Updated February 2026.

In 17 community votes, Grok Code Fast 1 wins 54% of head-to-head duels. Grok Code Fast 1 leads in Web Design, while GPT OSS 120B leads in Reasoning. Based on blind community voting from the RIVAL open dataset of 17+ human preference judgments for this pair.