Claude Opus 5 (Medium) vs Gemini 3.1 Pro Preview
Which is better for the money: Claude Opus 5 (Medium) 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 2026-10-25.
Trade-off
Verdict
Depends on your budget
Claude Opus 5 (Medium) scores 15.1 points higher (44.8 vs 29.7) but costs 1.4× as much to run the benchmark ($2732 vs $1935; flagship vs premium cost classes). Pick Claude Opus 5 (Medium) when the extra intelligence is worth the premium, otherwise Gemini 3.1 Pro Preview.
| Metric | Claude Opus 5 (Medium) | Gemini 3.1 Pro Preview | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 44.8 | 29.7 | −33.7% Gemini 3.1 Pro Preview is 33.7% less intelligent |
| Total AA cost (lower is better) | $2,731.91 | $1,935.39 | −29.2% Gemini 3.1 Pro Preview is 29.2% cheaper |
| End-to-end time (lower is better) | 12.70s | 24.21s | +90.6% Gemini 3.1 Pro Preview is 90.6% slower |
| Price per 1M tokens (in / out) | $5.00 / $25.0 | $2.00 / $12.0 | |
| Input modalities | Text, Image | Text, Image, Speech, Video |
Gemini 3.1 Pro Preview vs Claude Opus 5 (Medium): 33.7% less intelligence, 29.2% less cost to run the AA benchmark, and 90.6% slower end-to-end.
Today's Pareto frontier
Against the frontier
- Claude Opus 5 (Medium) is off the frontier: at the same or lower cost, Claude Opus 5.5 (High, Default Fallback) scores 53.60 for $2172.
- 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 (Medium)Gemini 3.1 Pro PreviewToday'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-medium/gemini-3-1-pro-preview · Markdown: /api/v1/compare/claude-opus-5-medium/gemini-3-1-pro-preview?format=md · llms.txt · agent skill