GPT-5.6 Luna (Xhigh) vs Quasar 438B (Max, Based on GLM-5.2)
Which is better for the money: GPT-5.6 Luna (Xhigh) by OpenAI or Quasar 438B (Max, Based on GLM-5.2) by Multiverse Computing? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.
Clear winner
Verdict
Pick GPT-5.6 Luna (Xhigh)
Quasar 438B (Max, Based on GLM-5.2) vs GPT-5.6 Luna (Xhigh): 22.8% less intelligence, 37.4% more cost to run the AA benchmark, and 64.0% faster end-to-end.
| Metric | GPT-5.6 Luna (Xhigh) | Quasar 438B (Max, Based on GLM-5.2) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 34.6 | 26.7 | −22.8% Quasar 438B (Max, Bas… is 22.8% less intelligent |
| Total AA cost (lower is better) | $179.33 | $246.48 | +37.4% Quasar 438B (Max, Bas… is 37.4% more expensive |
| End-to-end time (lower is better) | 45.80s | 16.51s | −64.0% Quasar 438B (Max, Bas… is 64.0% faster |
| Price per 1M tokens (in / out) | $0.20 / $1.20 | $0.11 / $0.33 | |
| Input modalities | Text, Image | Text |
Today's Pareto frontier
Against the frontier
- GPT-5.6 Luna (Xhigh) is off the frontier: at the same or lower cost, GPT-6.1 Terra (Medium) scores 41.30 for $175.
- Quasar 438B (Max, Based on GLM-5.2) is off the frontier: at the same or lower cost, MiMo-V2.6-Pro scores 46.30 for $207.
GPT-5.6 Luna (Xhigh)Quasar 438B (Max, Based on GLM-5.2)Today's Pareto frontierEvery other model
Matchup
Compare something else
Agents:
Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-5-6-luna-xhigh/quasar-438b · Markdown: /api/v1/compare/gpt-5-6-luna-xhigh/quasar-438b?format=md · llms.txt · agent skill