Gemini 2.5 Pro vs GPT-5.6 Luna (Non-reasoning)
Which is better for the money: Gemini 2.5 Pro by Google or GPT-5.6 Luna (Non-reasoning) by OpenAI? 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
Gemini 2.5 Pro scores 0.6 points higher (16.1 vs 15.5) but costs 35× as much to run the benchmark ($804 vs $23.0; premium vs budget cost classes). They are not alternatives at one budget: pick Gemini 2.5 Pro when you need intelligence above 15.5, and GPT-5.6 Luna (Non-reasoning) when 15.5 is enough.
| Metric | Gemini 2.5 Pro | GPT-5.6 Luna (Non-reasoning) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 16.1 | 15.5 | −3.7% GPT-5.6 Luna (Non-rea… is 3.7% less intelligent |
| Total AA cost (lower is better) | $804.03 | $22.97 | −97.1% GPT-5.6 Luna (Non-rea… is 97.1% cheaper |
| End-to-end time (lower is better) | 30.03s | 5.06s | −83.2% GPT-5.6 Luna (Non-rea… is 83.2% faster |
| Price per 1M tokens (in / out) | $1.25 / $10.0 | $0.20 / $1.20 | |
| Input modalities | Text, Image, Speech, Video | Text, Image |
GPT-5.6 Luna (Non-reasoning) vs Gemini 2.5 Pro: 3.7% less intelligence, 97.1% less cost to run the AA benchmark, and 83.2% faster 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-5.6 Luna (Non-reasoning) is off the frontier: at the same or lower cost, GPT-6 Luna (Low) scores 21.50 for $10.6.
Gemini 2.5 ProGPT-5.6 Luna (Non-reasoning)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-5-6-luna-non-reasoning · Markdown: /api/v1/compare/gemini-2-5-pro/gpt-5-6-luna-non-reasoning?format=md · llms.txt · agent skill