GPT-5 vs Grok 3 Thinking
Compare GPT-5 by OpenAI against Grok 3 Thinking by xAI, in 4 community votes, grok 3 thinking wins 75% of head-to-head duels, context windows of 400K vs 128K, tested across 14 shared challenges. Updated May 2026.
Which is better, GPT-5 or Grok 3 Thinking?
Grok 3 Thinking is the better choice overall, winning 75% of 4 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 Thinking
GPT-5 is made by openai while Grok 3 Thinking is from xai. GPT-5 has a 400K token context window compared to Grok 3 Thinking's 128K. In community voting, In 4 community votes, Grok 3 Thinking wins 75% of head-to-head duels.
In 4 community votes, Grok 3 Thinking wins 75% of head-to-head duels. Grok 3 Thinking has the edge overall, but performance varies by task type. Based on blind community voting from the Rival open dataset of 4+ human preference judgments for this pair.
Per 1M tokens
Pick Grok 3 Thinking. In 4 blind votes, Grok 3 Thinking wins 75% of the time. That's not luck.
Style Comparison
Grok 3 Thinking uses 17.7x more bold
