GPT-5 vs Grok Code Fast 1
Compare GPT-5 by OpenAI against Grok Code Fast 1 by xAI, in 175 community votes, gpt-5 wins 78% of head-to-head duels, context windows of 400K vs 256K, tested across 52 shared challenges. Updated June 2026.
Which is better, GPT-5 or Grok Code Fast 1?
GPT-5 is the better choice overall, winning 78% of 175 blind community votes on Rival. GPT-5 costs $1.25/M input tokens vs $0.2/M for Grok Code Fast 1. Context windows: 400K vs 256K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-5 and Grok Code Fast 1
GPT-5 is made by openai while Grok Code Fast 1 is from xai. GPT-5 has a 400K token context window compared to Grok Code Fast 1's 256K. On pricing, GPT-5 costs $1.25/M input tokens vs $0.2/M for Grok Code Fast 1. In community voting, In 175 community votes, GPT-5 wins 78% of head-to-head duels.
In 175 community votes, GPT-5 wins 78% of head-to-head duels. GPT-5 leads in Reasoning, Image Generation, Web Design, while Grok Code Fast 1 leads in Conversation, Analysis. Based on blind community voting from the Rival open dataset of 175+ human preference judgments for this pair.
Per 1M tokens
Grok Code Fast 1 is cheaper on both — 6.3× input, 6.7× output
Pick GPT-5. In 175 blind votes, GPT-5 wins 78% of the time. That's not luck.
Pick GPT-5 for Image Generation, Web Design, Reasoning. Pick Grok Code Fast 1 for Conversation, Analysis. Grok Code Fast 1 is 6.7x cheaper per token — worth considering if cost matters.
Style Comparison
Grok Code Fast 1 uses 6.0x more emoji
