Claude Opus 4.1 vs xAI: Grok 4.3
Compare Claude Opus 4.1 by Anthropic against xAI: Grok 4.3 by xAI, context windows of 200K vs 1.0M, tested across 53 shared challenges. Updated May 2026.
Which is better, Claude Opus 4.1 or xAI: Grok 4.3?
Claude Opus 4.1 and xAI: Grok 4.3 are both competitive models. Claude Opus 4.1 costs $15/M input tokens vs $1.25/M for xAI: Grok 4.3. Context windows: 200K vs 1000K tokens. Compare their real outputs side by side below.
Key Differences Between Claude Opus 4.1 and xAI: Grok 4.3
Claude Opus 4.1 is made by anthropic while xAI: Grok 4.3 is from xai. Claude Opus 4.1 has a 200K token context window compared to xAI: Grok 4.3's 1000K. On pricing, Claude Opus 4.1 costs $15/M input tokens vs $1.25/M for xAI: Grok 4.3.
Per 1M tokens
xAI: Grok 4.3 is cheaper on both — 12× input, 30× output
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
xAI: Grok 4.3 is 30x cheaper per token — worth considering if cost matters.
Style Comparison
Claude Opus 4.1 uses 38.4x more emoji
