Claude Opus 5.5 (High, Default Fallback) vs DeepSeek V4.1 Flash 1017 (High)

Claude Opus 5.5 (High, Default Fallback) vs DeepSeek V4.1 Flash 1017 (High). 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 5.5 (High, Default Fallback)DeepSeek V4.1 Flash 1017 (High)Difference
Intelligence (higher is better)51.728.5−44.9% DeepSeek V4.1 Flash 1… is 44.9% less intelligent
Total AA cost (lower is better)$2,715.98Not reported— not comparable
End-to-end time (lower is better)53.79s12.59s−76.6% DeepSeek V4.1 Flash 1… is 76.6% faster
Price per 1M tokens (in / out)$4.00 / $20.0$0.30 / $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-5-5-high/deepseek-v4-1-flash-1017-high · Markdown: /api/v1/compare/claude-opus-5-5-high/deepseek-v4-1-flash-1017-high?format=md · llms.txt · agent skill