GPT-5
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GPT-5 vs Grok 3
Compare GPT-5 by OpenAI against Grok 3 by xAI, in 9 community votes, gpt-5 wins 86% of head-to-head duels, context windows of 400K vs 128K, tested across 28 shared challenges. Updated March 2026.
Which is better, GPT-5 or Grok 3?
GPT-5 is the better choice overall, winning 86% of 9 blind community votes on Rival. Context windows: 400K vs 128K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-5 and Grok 3
GPT-5 is made by openai while Grok 3 is from xai. GPT-5 has a 400K token context window compared to Grok 3's 128K. In community voting, In 9 community votes, GPT-5 wins 86% of head-to-head duels.
In 9 community votes, GPT-5 wins 86% of head-to-head duels. GPT-5 leads in Reasoning. Based on blind community voting from the Rival open dataset of 9+ human preference judgments for this pair.
Reasoning: GPT-5 wins 100% of votes
Analysis: GPT-5 and Grok 3 are tied
Our Verdict
GPT-5Winner
Grok 3Runner-up
Pick GPT-5. In 9 blind votes, GPT-5 wins 86% of the time. That's not luck.
GPT-5 particularly excels in Reasoning.
Clear winner
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