Gemini 4 Carbon (High) vs GPT-6 Luna (Xhigh)
Which is better for the money: Gemini 4 Carbon (High) by Google or GPT-6 Luna (Xhigh) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-29.
Trade-off
Verdict
Depends on your budget
Gemini 4 Carbon (High) scores 36.1 points higher (59.4 vs 23.3) but costs 96× as much to run the benchmark ($8240 vs $85.7; flagship vs mid-range cost classes). They are not alternatives at one budget: pick Gemini 4 Carbon (High) when you need intelligence above 23.3, and GPT-6 Luna (Xhigh) when 23.3 is enough.
| Metric | Gemini 4 Carbon (High) | GPT-6 Luna (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 59.4 | 23.3 | −60.8% GPT-6 Luna (Xhigh) is 60.8% less intelligent |
| Total AA cost (lower is better) | $8,239.69 | $85.74 | −99.0% GPT-6 Luna (Xhigh) is 99.0% cheaper |
| End-to-end time (lower is better) | 102.49s | 20.71s | −79.8% GPT-6 Luna (Xhigh) is 79.8% faster |
| Price per 1M tokens (in / out) | $4.00 / $20.0 | $0.10 / $0.50 | |
| Input modalities | Text, Image, Speech, Video | Text, Image |
GPT-6 Luna (Xhigh) vs Gemini 4 Carbon (High): 60.8% less intelligence, 99.0% less cost to run the AA benchmark, and 79.8% faster end-to-end.
Today's Pareto frontier
Against the frontier
- Gemini 4 Carbon (High) is on today's frontier: nothing is both smarter and cheaper.
- GPT-6 Luna (Xhigh) is off the frontier: at the same or lower cost, Claude Haiku 5.5 (Medium) scores 24.60 for $72.7.
Gemini 4 Carbon (High)GPT-6 Luna (Xhigh)Today's Pareto frontierEvery other model
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