Gemini 2.5 Pro vs GPT-5.6 Luna (Medium)
Which is better for the money: Gemini 2.5 Pro by Google or GPT-5.6 Luna (Medium) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-25.
Clear winner
Verdict
Pick GPT-5.6 Luna (Medium)
GPT-5.6 Luna (Medium) vs Gemini 2.5 Pro: 55.3% more intelligence, 94.6% less cost to run the AA benchmark, and 77.7% faster end-to-end.
| Metric | Gemini 2.5 Pro | GPT-5.6 Luna (Medium) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 16.1 | 25.0 | +55.3% GPT-5.6 Luna (Medium) is 55.3% more intelligent |
| Total AA cost (lower is better) | $822.85 | $44.32 | −94.6% GPT-5.6 Luna (Medium) is 94.6% cheaper |
| End-to-end time (lower is better) | 27.37s | 6.11s | −77.7% GPT-5.6 Luna (Medium) is 77.7% faster |
| 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 (Medium) is off the frontier: at the same or lower cost, GPT-6 Luna (Medium) scores 29.90 for $31.2.
Gemini 2.5 ProGPT-5.6 Luna (Medium)Today's Pareto frontierEvery other model
Matchup
Compare something else
Agents:
Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gemini-2-5-pro/gpt-5-6-luna-medium · Markdown: /api/v1/compare/gemini-2-5-pro/gpt-5-6-luna-medium?format=md · llms.txt · agent skill