Claude Opus 5.5 (Medium, Default Fallback) vs Gemini 2.5 Pro
Which is better for the money: Claude Opus 5.5 (Medium, Default Fallback) by Anthropic or Gemini 2.5 Pro by Google? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-25.
Trade-off
Verdict
Depends on your budget
Claude Opus 5.5 (Medium, Default Fallba… scores 35.1 points higher (51.2 vs 16.1) but costs 2.0× as much to run the benchmark ($1627 vs $823; both premium class). Pick Claude Opus 5.5 (Medium, Default Fallba… when the extra intelligence is worth the premium, otherwise Gemini 2.5 Pro.
| Metric | Claude Opus 5.5 (Medium, Default Fallback) | Gemini 2.5 Pro | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 51.2 | 16.1 | −68.6% Gemini 2.5 Pro is 68.6% less intelligent |
| Total AA cost (lower is better) | $1,626.81 | $822.85 | −49.4% Gemini 2.5 Pro is 49.4% cheaper |
| End-to-end time (lower is better) | 20.68s | 27.19s | +31.5% Gemini 2.5 Pro is 31.5% slower |
| Price per 1M tokens (in / out) | $4.00 / $20.0 | $1.25 / $10.0 | |
| Input modalities | Text, Image | Text, Image, Speech, Video |
Gemini 2.5 Pro vs Claude Opus 5.5 (Medium, Default Fallback): 68.6% less intelligence, 49.4% less cost to run the AA benchmark, and 31.5% slower end-to-end.
Today's Pareto frontier
Against the frontier
- Claude Opus 5.5 (Medium, Default Fallback) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
- Gemini 2.5 Pro is off the frontier: at the same or lower cost, GPT-6.1 Sol (Xhigh) scores 51.00 for $662.
Claude Opus 5.5 (Medium, Default Fallback)Gemini 2.5 ProToday'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-medium/gemini-2-5-pro · Markdown: /api/v1/compare/claude-opus-5-5-medium/gemini-2-5-pro?format=md · llms.txt · agent skill