GLM-5.2 (Max) vs GPT-5.6 Luna (Xhigh)

Which is better for the money: GLM-5.2 (Max) by Z AI or GPT-5.6 Luna (Xhigh) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.

Clear winner

Z AIGLM-5.2 (Max)Off the frontier

Intelligence: 33.70
Total cost: $2097

OpenAIGPT-5.6 Luna (Xhigh)Off the frontier

Intelligence: 34.60
Total cost: $179

Verdict

Pick GPT-5.6 Luna (Xhigh)

GPT-5.6 Luna (Xhigh) vs GLM-5.2 (Max): 2.7% more intelligence, 91.4% less cost to run the AA benchmark, and 35.5% slower end-to-end.

Metric	GLM-5.2 (Max)	GPT-5.6 Luna (Xhigh)	Difference
Intelligence (higher is better)	33.7	34.6	+2.7% GPT-5.6 Luna (Xhigh) is 2.7% more intelligent
Total AA cost (lower is better)	$2,097.29	$179.33	−91.4% GPT-5.6 Luna (Xhigh) is 91.4% cheaper
End-to-end time (lower is better)	29.81s	40.39s	+35.5% GPT-5.6 Luna (Xhigh) is 35.5% slower
Price per 1M tokens (in / out)	$1.40 / $4.40	$0.20 / $1.20
Input modalities	Text	Text, Image

Open this matchup in the interactive picker GLM-5.2 (Max): what beats it GPT-5.6 Luna (Xhigh): what beats it

Today's Pareto frontier

Against the frontier

GLM-5.2 (Max) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
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.

GLM-5.2 (Max)GPT-5.6 Luna (Xhigh)Today's Pareto frontierOpen-weights frontierEvery other model

Matchup

Compare something else

Agents: Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/glm-5-2/gpt-5-6-luna-xhigh · Markdown: /api/v1/compare/glm-5-2/gpt-5-6-luna-xhigh?format=md · llms.txt · agent skill