Claude 4 Sonnet (Reasoning) vs DeepSeek V4 Flash 0420 (Max)

Claude 4 Sonnet (Reasoning) vs DeepSeek V4 Flash 0420 (Max). A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

AnthropicClaude 4 Sonnet (Reasoning)Not ranked · benchmark data missing
Intelligence
18.90
Total cost
-
DeepSeekDeepSeek V4 Flash 0420 (Max)Off the frontier
Intelligence
24.20
Total cost
$149
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 4 Sonnet (Reasoning)DeepSeek V4 Flash 0420 (Max)Difference
Intelligence (higher is better)18.924.2+28.0% DeepSeek V4 Flash 042… is 28.0% more intelligent
Total AA cost (lower is better)Not reported$149.48— not comparable
End-to-end time (lower is better)Not reported116.79s— not comparable
Price per 1M tokens (in / out)—$0.11 / $0.23
Input modalitiesText, ImageText
Open this matchup in the interactive pickerClaude 4 Sonnet (Reasoning): what beats itDeepSeek V4 Flash 0420 (Max): what beats it
Matchup

Compare something else

Agents: Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/claude-4-sonnet-thinking/deepseek-v4-flash-0420 · Markdown: /api/v1/compare/claude-4-sonnet-thinking/deepseek-v4-flash-0420?format=md · llms.txt · agent skill