Gemini 3.5 Flash (High) vs GPT-6 Luna (Non-reasoning)
Which is better for the money: Gemini 3.5 Flash (High) by Google or GPT-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 3.5 Flash (High) scores 14.1 points higher (32.6 vs 18.5) but costs 220× as much to run the benchmark ($4222 vs $19.2; flagship vs budget cost classes). They are not alternatives at one budget: pick Gemini 3.5 Flash (High) when you need intelligence above 18.5, and GPT-6 Luna (Non-reasoning) when 18.5 is enough.
| Metric | Gemini 3.5 Flash (High) | GPT-6 Luna (Non-reasoning) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 32.6 | 18.5 | −43.3% GPT-6 Luna (Non-reaso… is 43.3% less intelligent |
| Total AA cost (lower is better) | $4,222.12 | $19.16 | −99.5% GPT-6 Luna (Non-reaso… is 99.5% cheaper |
| End-to-end time (lower is better) | 17.12s | 5.09s | −70.3% GPT-6 Luna (Non-reaso… is 70.3% faster |
| Price per 1M tokens (in / out) | $1.50 / $9.00 | $0.10 / $0.50 | |
| Input modalities | Text, Image, Speech, Video | Text, Image |
GPT-6 Luna (Non-reasoning) vs Gemini 3.5 Flash (High): 43.3% less intelligence, 99.5% less cost to run the AA benchmark, and 70.3% faster end-to-end.
Today's Pareto frontier
Against the frontier
- Gemini 3.5 Flash (High) is off the frontier: at the same or lower cost, Claude Opus 5.5 (Xhigh, Default Fallback) scores 56.00 for $4057.
- GPT-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 3.5 Flash (High)GPT-6 Luna (Non-reasoning)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-3-5-flash/gpt-6-luna-non-reasoning · Markdown: /api/v1/compare/gemini-3-5-flash/gpt-6-luna-non-reasoning?format=md · llms.txt · agent skill