GPT-6 Luna (Medium) vs GPT-6 Luna (Xhigh)

Which is better for the money: GPT-6 Luna (Medium) by OpenAI or GPT-6 Luna (Xhigh) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-24.

Trade-off

OpenAIGPT-6 Luna (Medium)On the frontier

Intelligence: 29.90
Total cost: $31.2

OpenAIGPT-6 Luna (Xhigh)On the frontier

Intelligence: 34.60
Total cost: $66.8

Verdict

Depends on your budget

GPT-6 Luna (Xhigh) scores 4.7 points higher (34.6 vs 29.9) but costs 2.1× as much to run the benchmark ($66.8 vs $31.2; mid-range vs budget cost classes). Pick GPT-6 Luna (Xhigh) when the extra intelligence is worth the premium, otherwise GPT-6 Luna (Medium).

Metric	GPT-6 Luna (Medium)	GPT-6 Luna (Xhigh)	Difference
Intelligence (higher is better)	29.9	34.6	+15.7% GPT-6 Luna (Xhigh) is 15.7% more intelligent
Total AA cost (lower is better)	$31.17	$66.81	+114.3% GPT-6 Luna (Xhigh) is 2.1× more expensive
End-to-end time (lower is better)	8.25s	21.27s	+157.8% GPT-6 Luna (Xhigh) is 157.8% slower
Price per 1M tokens (in / out)	$0.10 / $0.50	$0.10 / $0.50
Input modalities	Text, Image	Text, Image

GPT-6 Luna (Xhigh) vs GPT-6 Luna (Medium): 15.7% more intelligence, 114.3% more cost to run the AA benchmark, and 157.8% slower end-to-end.

Open this matchup in the interactive picker GPT-6 Luna (Medium): what beats it GPT-6 Luna (Xhigh): what beats it

Today's Pareto frontier

Against the frontier

GPT-6 Luna (Medium) is on today's frontier: nothing is both smarter and cheaper.
GPT-6 Luna (Xhigh) is on today's frontier: nothing is both smarter and cheaper.

GPT-6 Luna (Medium)GPT-6 Luna (Xhigh)Today's Pareto frontierEvery other model

Matchup

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Agents: Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-6-luna-medium/gpt-6-luna-xhigh · Markdown: /api/v1/compare/gpt-6-luna-medium/gpt-6-luna-xhigh?format=md · llms.txt · agent skill