Claude Opus 5.5 (Xhigh, Default Fallback) vs DeepSeek V3.1 Terminus (Non-reasoning)

Claude Opus 5.5 (Xhigh, Default Fallback) vs DeepSeek V3.1 Terminus (Non-reasoning). A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

AnthropicClaude Opus 5.5 (Xhigh, Default Fallback)On the frontier
Intelligence
56.00
Total cost
$4057
DeepSeekDeepSeek V3.1 Terminus (Non-reasoning)Not ranked · benchmark data missing
Intelligence
13.90
Total cost
-
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 (Xhigh, Default Fallback)DeepSeek V3.1 Terminus (Non-reasoning)Difference
Intelligence (higher is better)56.013.9−75.2% DeepSeek V3.1 Terminu… is 75.2% less intelligent
Total AA cost (lower is better)$4,056.65Not reported— not comparable
End-to-end time (lower is better)125.20s7.37s−94.1% DeepSeek V3.1 Terminu… is 94.1% faster
Price per 1M tokens (in / out)$4.00 / $20.0$0.27 / $1.00
Input modalitiesText, ImageText
Open this matchup in the interactive pickerClaude Opus 5.5 (Xhigh, Default Fallback): what beats itDeepSeek V3.1 Terminus (Non-reasoning): what beats it
Matchup

Compare something else

Agents: Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/claude-opus-5-5-xhigh/deepseek-v3-1-terminus · Markdown: /api/v1/compare/claude-opus-5-5-xhigh/deepseek-v3-1-terminus?format=md · llms.txt · agent skill