GPT-5.4 mini (Xhigh) vs GPT-6 Luna (Medium)
Which is better for the money: GPT-5.4 mini (Xhigh) by OpenAI or GPT-6 Luna (Medium) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-24.
Clear winner
Verdict
Pick GPT-6 Luna (Medium)
GPT-6 Luna (Medium) vs GPT-5.4 mini (Xhigh): 24.1% more intelligence, 98.0% less cost to run the AA benchmark, and 92.9% faster end-to-end.
| Metric | GPT-5.4 mini (Xhigh) | GPT-6 Luna (Medium) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 24.1 | 29.9 | +24.1% GPT-6 Luna (Medium) is 24.1% more intelligent |
| Total AA cost (lower is better) | $1,524.02 | $31.17 | −98.0% GPT-6 Luna (Medium) is 98.0% cheaper |
| End-to-end time (lower is better) | 115.72s | 8.25s | −92.9% GPT-6 Luna (Medium) is 92.9% faster |
| Price per 1M tokens (in / out) | $0.75 / $4.50 | $0.10 / $0.50 | |
| Input modalities | Text, Image | Text, Image |
Today's Pareto frontier
Against the frontier
- GPT-5.4 mini (Xhigh) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
- GPT-6 Luna (Medium) is on today's frontier: nothing is both smarter and cheaper.
GPT-5.4 mini (Xhigh)GPT-6 Luna (Medium)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/gpt-5-4-mini/gpt-6-luna-medium · Markdown: /api/v1/compare/gpt-5-4-mini/gpt-6-luna-medium?format=md · llms.txt · agent skill