Claude 3 Opus vs Mistral Small 4

Compare Claude 3 Opus by Anthropic against Mistral Small 4 by Mistral AI, context windows of 200K vs 262K, tested across 12 shared challenges. Updated March 2026.

Which is better, Claude 3 Opus or Mistral Small 4?

Claude 3 Opus and Mistral Small 4 are both competitive models. Claude 3 Opus costs $15/M input tokens vs $0.15/M for Mistral Small 4. Context windows: 200K vs 262K tokens. Compare their real outputs side by side below.

Key Differences Between Claude 3 Opus and Mistral Small 4

Claude 3 Opus is made by anthropic while Mistral Small 4 is from mistral. Claude 3 Opus has a 200K token context window compared to Mistral Small 4's 262K. On pricing, Claude 3 Opus costs $15/M input tokens vs $0.15/M for Mistral Small 4.

Our Verdict
Claude 3 Opus
Claude 3 Opus
Mistral Small 4
Mistral Small 4Runner-up

No community votes yet. On paper, Claude 3 Opus has the edge — bigger model tier, major provider backing.

Mistral Small 4 is 125x cheaper per token — worth considering if cost matters.

Too close to call
FAQ

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