Claude Opus 4 vs Grok 3 Beta
Compare Claude Opus 4 by Anthropic against Grok 3 Beta by xAI, in 2 community votes, grok 3 beta wins 100% of head-to-head duels, context windows of 200K vs 131K, tested across 53 shared challenges. Updated May 2026.
Which is better, Claude Opus 4 or Grok 3 Beta?
Grok 3 Beta is the better choice overall, winning 100% of 2 blind community votes on Rival. Claude Opus 4 costs $15/M input tokens vs $2/M for Grok 3 Beta. Context windows: 200K vs 131K tokens. Compare their real outputs side by side below.
Key Differences Between Claude Opus 4 and Grok 3 Beta
Claude Opus 4 is made by anthropic while Grok 3 Beta is from xai. Claude Opus 4 has a 200K token context window compared to Grok 3 Beta's 131K. On pricing, Claude Opus 4 costs $15/M input tokens vs $2/M for Grok 3 Beta. In community voting, In 2 community votes, Grok 3 Beta wins 100% of head-to-head duels.
In 2 community votes, Grok 3 Beta wins 100% of head-to-head duels. Based on blind community voting from the Rival open dataset of 2+ human preference judgments for this pair.
Per 1M tokens
Grok 3 Beta is cheaper on both — 7.5× input, 19× output
Pick Grok 3 Beta. In 2 blind votes, Grok 3 Beta wins 100% of the time. That's not luck.
Grok 3 Beta is 19x cheaper per token — worth considering if cost matters.
Style Comparison
Claude Opus 4 uses 11.2x more emoji
