GPT-5 vs xAI: Grok 4

Compare GPT-5 by OpenAI against xAI: Grok 4 by xAI, in 13 community votes, gpt-5 wins 67% of head-to-head duels, context windows of 400K vs 256K, tested across 38 shared challenges. Updated February 2026.

In 13 community votes, GPT-5 wins 67% of head-to-head duels. GPT-5 leads in Image Generation, Reasoning, while xAI: Grok 4 leads in Web Design. Based on blind community voting from the RIVAL open dataset of 13+ human preference judgments for this pair.