Claude Opus 5.5 (Low, Default Fallback) vs Gemini 3.5 Flash (High)
Which is better for the money: Claude Opus 5.5 (Low, Default Fallback) by Anthropic or Gemini 3.5 Flash (High) by Google? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-25.
Clear winner
Verdict
Pick Claude Opus 5.5 (Low, Default Fallback)
Gemini 3.5 Flash (High) vs Claude Opus 5.5 (Low, Default Fallback): 22.9% less intelligence, 390.8% more cost to run the AA benchmark, and 33.3% slower end-to-end.
| Metric | Claude Opus 5.5 (Low, Default Fallback) | Gemini 3.5 Flash (High) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 42.3 | 32.6 | −22.9% Gemini 3.5 Flash (Hig… is 22.9% less intelligent |
| Total AA cost (lower is better) | $860.33 | $4,222.12 | +390.8% Gemini 3.5 Flash (Hig… is 4.9× more expensive |
| End-to-end time (lower is better) | 12.48s | 16.63s | +33.3% Gemini 3.5 Flash (Hig… is 33.3% slower |
| Price per 1M tokens (in / out) | $4.00 / $20.0 | $1.50 / $9.00 | |
| Input modalities | Text, Image | Text, Image, Speech, Video |
Today's Pareto frontier
Against the frontier
- Claude Opus 5.5 (Low, Default Fallback) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Xhigh) scores 51.00 for $662.
- Gemini 3.5 Flash (High) is off the frontier: at the same or lower cost, Claude Opus 5.5 (Xhigh, Default Fallback) scores 56.00 for $4057.
Claude Opus 5.5 (Low, Default Fallback)Gemini 3.5 Flash (High)Today's Pareto frontierEvery other model
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/claude-opus-5-5-low/gemini-3-5-flash · Markdown: /api/v1/compare/claude-opus-5-5-low/gemini-3-5-flash?format=md · llms.txt · agent skill