GPT-5.6 Luna (Xhigh) vs GPT-6 Luna (Max)
Which is better for the money: GPT-5.6 Luna (Xhigh) by OpenAI or GPT-6 Luna (Max) 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 (Max)
GPT-6 Luna (Max) vs GPT-5.6 Luna (Xhigh): 10.1% more intelligence, 31.9% less cost to run the AA benchmark, and 166.0% slower end-to-end.
| Metric | GPT-5.6 Luna (Xhigh) | GPT-6 Luna (Max) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 34.6 | 38.1 | +10.1% GPT-6 Luna (Max) is 10.1% more intelligent |
| Total AA cost (lower is better) | $179.33 | $122.05 | −31.9% GPT-6 Luna (Max) is 31.9% cheaper |
| End-to-end time (lower is better) | 30.83s | 82.02s | +166.0% GPT-6 Luna (Max) is 166.0% slower |
| Price per 1M tokens (in / out) | $0.20 / $1.20 | $0.10 / $0.50 | |
| Input modalities | Text, Image | Text, Image |
Today's Pareto frontier
Against the frontier
- GPT-5.6 Luna (Xhigh) is off the frontier: at the same or lower cost, Claude Haiku 5.5 (Xhigh) scores 41.20 for $158.
- GPT-6 Luna (Max) is on today's frontier: nothing is both smarter and cheaper.
GPT-5.6 Luna (Xhigh)GPT-6 Luna (Max)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-5-6-luna-xhigh/gpt-6-luna · Markdown: /api/v1/compare/gpt-5-6-luna-xhigh/gpt-6-luna?format=md · llms.txt · agent skill