GLM-5.3 (Max) vs gpt-oss-120b (High)

Which is better for the money: GLM-5.3 (Max) by Z AI or gpt-oss-120b (High) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-25.

Trade-off

Z AIGLM-5.3 (Max)Off the frontier

Intelligence: 44.80
Total cost: $2503

OpenAIgpt-oss-120b (High)Off the frontier

Intelligence: 11.60
Total cost: $123

Verdict

Depends on your budget

GLM-5.3 (Max) scores 33.2 points higher (44.8 vs 11.6) but costs 20× as much to run the benchmark ($2503 vs $123; flagship vs mid-range cost classes). They are not alternatives at one budget: pick GLM-5.3 (Max) when you need intelligence above 11.6, and gpt-oss-120b (High) when 11.6 is enough.

Metric	GLM-5.3 (Max)	gpt-oss-120b (High)	Difference
Intelligence (higher is better)	44.8	11.6	−74.1% gpt-oss-120b (High) is 74.1% less intelligent
Total AA cost (lower is better)	$2,503.48	$122.71	−95.1% gpt-oss-120b (High) is 95.1% cheaper
End-to-end time (lower is better)	28.79s	11.55s	−59.9% gpt-oss-120b (High) is 59.9% faster
Price per 1M tokens (in / out)	$1.40 / $4.40	$0.15 / $0.60
Input modalities	Text	Text

gpt-oss-120b (High) vs GLM-5.3 (Max): 74.1% less intelligence, 95.1% less cost to run the AA benchmark, and 59.9% faster end-to-end.

Open this matchup in the interactive picker GLM-5.3 (Max): what beats it gpt-oss-120b (High): what beats it

Today's Pareto frontier

Against the frontier

GLM-5.3 (Max) is off the frontier: at the same or lower cost, Claude Opus 5.5 (High, Default Fallback) scores 53.60 for $2172.
gpt-oss-120b (High) is off the frontier: at the same or lower cost, GPT-6 Luna (Max) scores 38.10 for $122.

GLM-5.3 (Max)gpt-oss-120b (High)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-5-3/gpt-oss-120b · Markdown: /api/v1/compare/glm-5-3/gpt-oss-120b?format=md · llms.txt · agent skill