Claude Opus 5.5 (Xhigh, Default Fallback) vs Gemini 3.1 Pro Preview
Which is better for the money: Claude Opus 5.5 (Xhigh, Default Fallback) by Anthropic or Gemini 3.1 Pro Preview by Google? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.
Trade-off
Verdict
Depends on your budget
Claude Opus 5.5 (Xhigh, Default Fallbac… scores 26.3 points higher (56.0 vs 29.7) but costs 2.1× as much to run the benchmark ($4057 vs $1935; flagship vs premium cost classes). Pick Claude Opus 5.5 (Xhigh, Default Fallbac… when the extra intelligence is worth the premium, otherwise Gemini 3.1 Pro Preview.
| Metric | Claude Opus 5.5 (Xhigh, Default Fallback) | Gemini 3.1 Pro Preview | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 56.0 | 29.7 | −47.0% Gemini 3.1 Pro Preview is 47.0% less intelligent |
| Total AA cost (lower is better) | $4,056.65 | $1,935.39 | −52.3% Gemini 3.1 Pro Preview is 52.3% cheaper |
| End-to-end time (lower is better) | 127.77s | 24.38s | −80.9% Gemini 3.1 Pro Preview is 80.9% faster |
| Price per 1M tokens (in / out) | $4.00 / $20.0 | $2.00 / $12.0 | |
| Input modalities | Text, Image | Text, Image, Speech, Video |
Gemini 3.1 Pro Preview vs Claude Opus 5.5 (Xhigh, Default Fallback): 47.0% less intelligence, 52.3% less cost to run the AA benchmark, and 80.9% faster end-to-end.
Today's Pareto frontier
Against the frontier
- Claude Opus 5.5 (Xhigh, Default Fallback) is on today's frontier: nothing is both smarter and cheaper.
- Gemini 3.1 Pro Preview is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
Claude Opus 5.5 (Xhigh, Default Fallback)Gemini 3.1 Pro PreviewToday's Pareto frontierEvery other model
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