Gemini 2.5 Pro vs GPT-5.6 Luna (Xhigh)
Which is better for the money: Gemini 2.5 Pro by Google or GPT-5.6 Luna (Xhigh) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.
Clear winner
Verdict
Pick GPT-5.6 Luna (Xhigh)
GPT-5.6 Luna (Xhigh) vs Gemini 2.5 Pro: 114.9% more intelligence, 78.2% less cost to run the AA benchmark, and 33.9% slower end-to-end.
| Metric | Gemini 2.5 Pro | GPT-5.6 Luna (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 16.1 | 34.6 | +114.9% GPT-5.6 Luna (Xhigh) is 2.1× more intelligent |
| Total AA cost (lower is better) | $822.85 | $179.33 | −78.2% GPT-5.6 Luna (Xhigh) is 78.2% cheaper |
| End-to-end time (lower is better) | 30.16s | 40.39s | +33.9% GPT-5.6 Luna (Xhigh) is 33.9% slower |
| Price per 1M tokens (in / out) | $1.25 / $10.0 | $0.20 / $1.20 | |
| Input modalities | Text, Image, Speech, Video | Text, Image |
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-5.6 Luna (Xhigh) is off the frontier: at the same or lower cost, Claude Haiku 5.5 (Xhigh) scores 41.20 for $158.
Gemini 2.5 ProGPT-5.6 Luna (Xhigh)Today's Pareto frontierEvery other model
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gemini-2-5-pro/gpt-5-6-luna-xhigh · Markdown: /api/v1/compare/gemini-2-5-pro/gpt-5-6-luna-xhigh?format=md · llms.txt · agent skill