Claude Opus 4.5 vs Grok 3 Mini Beta
Compare Claude Opus 4.5 by Anthropic against Grok 3 Mini Beta by xAI, tested across 13 shared challenges. Updated April 2026.
Which is better, Claude Opus 4.5 or Grok 3 Mini Beta?
Claude Opus 4.5 and Grok 3 Mini Beta are both competitive models. Compare their real outputs side by side below.
Key Differences Between Claude Opus 4.5 and Grok 3 Mini Beta
Claude Opus 4.5 is made by anthropic while Grok 3 Mini Beta is from xai.
Our Verdict
Claude Opus 4.5
Grok 3 Mini BetaRunner-up
No community votes yet. On paper, Claude Opus 4.5 has the edge — bigger model tier, newer.
Too close to call
vsAsk them anything yourself
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
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