GPT-5.6 Luna (Xhigh) vs Qwen3.8 27B (Medium)
Which is better for the money: GPT-5.6 Luna (Xhigh) by OpenAI or Qwen3.8 27B (Medium) by Alibaba? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-27.
Clear winner
Verdict
Pick GPT-5.6 Luna (Xhigh)
Qwen3.8 27B (Medium) vs GPT-5.6 Luna (Xhigh): 20.2% less intelligence, 612.4% more cost to run the AA benchmark, and 42.2% slower end-to-end.
| Metric | GPT-5.6 Luna (Xhigh) | Qwen3.8 27B (Medium) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 34.6 | 27.6 | −20.2% Qwen3.8 27B (Medium) is 20.2% less intelligent |
| Total AA cost (lower is better) | $179.33 | $1,277.59 | +612.4% Qwen3.8 27B (Medium) is 7.1× more expensive |
| End-to-end time (lower is better) | 39.18s | 55.72s | +42.2% Qwen3.8 27B (Medium) is 42.2% slower |
| Price per 1M tokens (in / out) | $0.20 / $1.20 | $0.50 / $3.00 | |
| Input modalities | Text, Image | Text, Image, Video |
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.
- Qwen3.8 27B (Medium) 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)Qwen3.8 27B (Medium)Today's Pareto frontierOpen-weights 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/qwen3-8-27b-medium · Markdown: /api/v1/compare/gpt-5-6-luna-xhigh/qwen3-8-27b-medium?format=md · llms.txt · agent skill