Claude Opus 4.5 (Reasoning) vs Gemini 2.5 Flash (Reasoning)

Claude Opus 4.5 (Reasoning) vs Gemini 2.5 Flash (Reasoning). 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)Gemini 2.5 Flash (Reasoning)Difference
Intelligence (higher is better)29.113.1−55.0% Gemini 2.5 Flash (Rea… is 55.0% less intelligent
Total AA cost (lower is better)Not reportedNot reported— not comparable
End-to-end time (lower is better)24.17s17.75s−26.6% Gemini 2.5 Flash (Rea… is 26.6% faster
Price per 1M tokens (in / out)$5.00 / $25.0$0.30 / $2.50
Input modalitiesText, ImageText, Image, Speech, Video
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/gemini-2-5-flash-reasoning · Markdown: /api/v1/compare/claude-opus-4-5-thinking/gemini-2-5-flash-reasoning?format=md · llms.txt · agent skill