GPT-5.4 nano (Xhigh) vs GPT-5.6 Luna (Low)
Which is better for the money: GPT-5.4 nano (Xhigh) by OpenAI or GPT-5.6 Luna (Low) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-27.
Clear winner
Verdict
Pick GPT-5.6 Luna (Low)
GPT-5.6 Luna (Low) vs GPT-5.4 nano (Xhigh): 1.4% more intelligence, 91.8% less cost to run the AA benchmark, and 89.4% faster end-to-end.
| Metric | GPT-5.4 nano (Xhigh) | GPT-5.6 Luna (Low) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 20.7 | 21.0 | +1.4% GPT-5.6 Luna (Low) is 1.4% more intelligent |
| Total AA cost (lower is better) | $331.24 | $27.02 | −91.8% GPT-5.6 Luna (Low) is 91.8% cheaper |
| End-to-end time (lower is better) | 53.89s | 5.69s | −89.4% GPT-5.6 Luna (Low) is 89.4% faster |
| Price per 1M tokens (in / out) | $0.20 / $1.25 | $0.20 / $1.20 | |
| Input modalities | Text, Image | Text, Image |
Today's Pareto frontier
Against the frontier
- GPT-5.4 nano (Xhigh) is off the frontier: at the same or lower cost, MiMo-V2.6-Pro scores 46.30 for $207.
- GPT-5.6 Luna (Low) is off the frontier: at the same or lower cost, GPT-6 Luna (Low) scores 21.50 for $10.6.
GPT-5.4 nano (Xhigh)GPT-5.6 Luna (Low)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-nano/gpt-5-6-luna-low · Markdown: /api/v1/compare/gpt-5-4-nano/gpt-5-6-luna-low?format=md · llms.txt · agent skill