Claude Sonnet 5.5 (Xhigh, Default Fallback) vs Gemini 3.5 Flash (High)
Which is better for the money: Claude Sonnet 5.5 (Xhigh, 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 2026-10-24.
Clear winner
Verdict
Pick Claude Sonnet 5.5 (Xhigh, Default Fallback)
Gemini 3.5 Flash (High) vs Claude Sonnet 5.5 (Xhigh, Default Fallback): 37.2% less intelligence, 94.0% more cost to run the AA benchmark, and 48.1% faster end-to-end.
| Metric | Claude Sonnet 5.5 (Xhigh, Default Fallback) | Gemini 3.5 Flash (High) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 51.9 | 32.6 | −37.2% Gemini 3.5 Flash (Hig… is 37.2% less intelligent |
| Total AA cost (lower is better) | $2,176.82 | $4,222.12 | +94.0% Gemini 3.5 Flash (Hig… is 94.0% more expensive |
| End-to-end time (lower is better) | 32.10s | 16.65s | −48.1% Gemini 3.5 Flash (Hig… is 48.1% faster |
| Price per 1M tokens (in / out) | $2.00 / $10.0 | $1.50 / $9.00 | |
| Input modalities | Text, Image | Text, Image, Speech, Video |
Today's Pareto frontier
Against the frontier
- Claude Sonnet 5.5 (Xhigh, Default Fallback) is off the frontier: at the same or lower cost, Claude Opus 5.5 (High, Default Fallback) scores 53.60 for $2172.
- 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 Sonnet 5.5 (Xhigh, Default Fallback)Gemini 3.5 Flash (High)Today's Pareto frontierEvery other model
Matchup
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/claude-sonnet-5-5-xhigh/gemini-3-5-flash · Markdown: /api/v1/compare/claude-sonnet-5-5-xhigh/gemini-3-5-flash?format=md · llms.txt · agent skill