Claude Sonnet 4.5 vs Grok 3 Mini Beta
Compare Claude Sonnet 4.5 by Anthropic against Grok 3 Mini Beta by xAI, context windows of 200K vs 131K, tested across 12 shared challenges. Updated April 2026.
Which is better, Claude Sonnet 4.5 or Grok 3 Mini Beta?
Claude Sonnet 4.5 and Grok 3 Mini Beta are both competitive models. Claude Sonnet 4.5 costs $3/M input tokens vs $0.4/M for Grok 3 Mini Beta. Context windows: 200K vs 131K tokens. Compare their real outputs side by side below.
Key Differences Between Claude Sonnet 4.5 and Grok 3 Mini Beta
Claude Sonnet 4.5 is made by anthropic while Grok 3 Mini Beta is from xai. Claude Sonnet 4.5 has a 200K token context window compared to Grok 3 Mini Beta's 131K. On pricing, Claude Sonnet 4.5 costs $3/M input tokens vs $0.4/M for Grok 3 Mini Beta.
Our Verdict
Claude Sonnet 4.5
Grok 3 Mini BetaRunner-up
No community votes yet. On paper, Claude Sonnet 4.5 has the edge — bigger model tier, newer, bigger context window.
Grok 3 Mini Beta is 19x cheaper per token — worth considering if cost matters.
Slight edge
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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