Claude Opus 4.5 (Reasoning) vs DeepSeek V4.1 Flash (Max)

Claude Opus 4.5 (Reasoning) vs DeepSeek V4.1 Flash (Max). A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

Verdict

Comparison incomplete

A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

MetricClaude Opus 4.5 (Reasoning)DeepSeek V4.1 Flash (Max)Difference
Intelligence (higher is better)29.139.5+35.7% DeepSeek V4.1 Flash (… is 35.7% more intelligent
Total AA cost (lower is better)Not reported$671.96— not comparable
End-to-end time (lower is better)24.17s15.00s−37.9% DeepSeek V4.1 Flash (… is 37.9% faster
Price per 1M tokens (in / out)$5.00 / $25.0$0.29 / $1.20
Input modalitiesText, ImageText, Image
Matchup

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Agents: Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/claude-opus-4-5-thinking/deepseek-v4-1-flash · Markdown: /api/v1/compare/claude-opus-4-5-thinking/deepseek-v4-1-flash?format=md · llms.txt · agent skill