Gemini 2.5 Pro vs GPT-5.5 (Xhigh)
Which is better for the money: Gemini 2.5 Pro by Google or GPT-5.5 (Xhigh) by OpenAI? 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
GPT-5.5 (Xhigh) scores 22.3 points higher (38.4 vs 16.1) but costs 6.4× as much to run the benchmark ($5294 vs $823; flagship vs premium cost classes). They are not alternatives at one budget: pick GPT-5.5 (Xhigh) when you need intelligence above 16.1, and Gemini 2.5 Pro when 16.1 is enough.
| Metric | Gemini 2.5 Pro | GPT-5.5 (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 16.1 | 38.4 | +138.5% GPT-5.5 (Xhigh) is 2.4× more intelligent |
| Total AA cost (lower is better) | $822.85 | $5,294.36 | +543.4% GPT-5.5 (Xhigh) is 6.4× more expensive |
| End-to-end time (lower is better) | 26.13s | 44.76s | +71.3% GPT-5.5 (Xhigh) is 71.3% slower |
| Price per 1M tokens (in / out) | $1.25 / $10.0 | $5.00 / $30.0 | |
| Input modalities | Text, Image, Speech, Video | Text, Image |
GPT-5.5 (Xhigh) vs Gemini 2.5 Pro: 138.5% more intelligence, 543.4% more cost to run the AA benchmark, and 71.3% slower end-to-end.
Today's Pareto frontier
Against the frontier
- Gemini 2.5 Pro is off the frontier: at the same or lower cost, GPT-6.1 Sol (Xhigh) scores 51.00 for $662.
- GPT-5.5 (Xhigh) is off the frontier: at the same or lower cost, Claude Opus 5.5 (Xhigh, Default Fallback) scores 56.00 for $4057.
Gemini 2.5 ProGPT-5.5 (Xhigh)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/gemini-2-5-pro/gpt-5-5 · Markdown: /api/v1/compare/gemini-2-5-pro/gpt-5-5?format=md · llms.txt · agent skill