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Claude Sonnet 4.5 vs Grok 4.20 Multi-Agent Beta

Compare Claude Sonnet 4.5 by Anthropic against Grok 4.20 Multi-Agent Beta by xAI, context windows of 200K vs 2.0M, tested across 42 shared challenges. Updated March 2026.

Which is better, Claude Sonnet 4.5 or Grok 4.20 Multi-Agent Beta?

Claude Sonnet 4.5 and Grok 4.20 Multi-Agent Beta are both competitive models. Claude Sonnet 4.5 costs $3/M input tokens vs $2/M for Grok 4.20 Multi-Agent Beta. Context windows: 200K vs 2000K tokens. Compare their real outputs side by side below.

Key Differences Between Claude Sonnet 4.5 and Grok 4.20 Multi-Agent Beta

Claude Sonnet 4.5 is made by anthropic while Grok 4.20 Multi-Agent Beta is from xai. Claude Sonnet 4.5 has a 200K token context window compared to Grok 4.20 Multi-Agent Beta's 2000K. On pricing, Claude Sonnet 4.5 costs $3/M input tokens vs $2/M for Grok 4.20 Multi-Agent Beta.

Our Verdict
Grok 4.20 Multi-Agent Beta
Grok 4.20 Multi-Agent Beta
Claude Sonnet 4.5
Claude Sonnet 4.5Runner-up

No community votes yet. On paper, Grok 4.20 Multi-Agent Beta has the edge — bigger model tier, newer, bigger context window.

Slight edge
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