Claude Opus 4.5 (Reasoning) vs Gemini 2.5 Flash Preview (Sep '25) (Non-reasoning)
Claude Opus 4.5 (Reasoning) vs Gemini 2.5 Flash Preview (Sep '25) (Non-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.
| Metric | Claude Opus 4.5 (Reasoning) | Gemini 2.5 Flash Preview (Sep '25) (Non-reasoning) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 29.1 | 12.4 | −57.4% Gemini 2.5 Flash Prev… is 57.4% less intelligent |
| Total AA cost (lower is better) | Not reported | Not reported | — not comparable |
| End-to-end time (lower is better) | 22.94s | Not reported | — not comparable |
| Price per 1M tokens (in / out) | $5.00 / $25.0 | — | |
| Input modalities | Text, Image | Text, Image, Speech, Video |
Matchup
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/claude-opus-4-5-thinking/gemini-2-5-flash-preview-09-2025 · Markdown: /api/v1/compare/claude-opus-4-5-thinking/gemini-2-5-flash-preview-09-2025?format=md · llms.txt · agent skill