Claude Opus 4.1 vs xAI: Grok 4
Compare Claude Opus 4.1 by Anthropic against xAI: Grok 4 by xAI, in 17 community votes, claude opus 4.1 wins 71% of head-to-head duels, context windows of 200K vs 256K, tested across 53 shared challenges. Updated May 2026.
Which is better, Claude Opus 4.1 or xAI: Grok 4?
Claude Opus 4.1 is the better choice overall, winning 71% of 17 blind community votes on Rival. Claude Opus 4.1 costs $15/M input tokens vs $3/M for xAI: Grok 4. Context windows: 200K vs 256K tokens. Compare their real outputs side by side below.
Key Differences Between Claude Opus 4.1 and xAI: Grok 4
Claude Opus 4.1 is made by anthropic while xAI: Grok 4 is from xai. Claude Opus 4.1 has a 200K token context window compared to xAI: Grok 4's 256K. On pricing, Claude Opus 4.1 costs $15/M input tokens vs $3/M for xAI: Grok 4. In community voting, In 17 community votes, Claude Opus 4.1 wins 71% of head-to-head duels.
In 17 community votes, Claude Opus 4.1 wins 71% of head-to-head duels. Claude Opus 4.1 leads in Web Design. Based on blind community voting from the Rival open dataset of 17+ human preference judgments for this pair.
Per 1M tokens
xAI: Grok 4 is cheaper on both — 5.0× input, 5.0× output
Pick Claude Opus 4.1. In 17 blind votes, Claude Opus 4.1 wins 71% of the time. That's not luck.
Claude Opus 4.1 particularly excels in Web Design. xAI: Grok 4 is 5.0x cheaper per token — worth considering if cost matters.
Style Comparison
Claude Opus 4.1 uses 5.5x more emoji
