GPT-5.5 (Medium) vs Muse Glimmer (High)
Which is better for the money: GPT-5.5 (Medium) by OpenAI or Muse Glimmer (High) by Meta? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-25.
Trade-off
Verdict
Depends on your budget
GPT-5.5 (Medium) scores 16.3 points higher (33.8 vs 17.5) but costs 14× as much to run the benchmark ($2095 vs $146; flagship vs mid-range cost classes). They are not alternatives at one budget: pick GPT-5.5 (Medium) when you need intelligence above 17.5, and Muse Glimmer (High) when 17.5 is enough.
| Metric | GPT-5.5 (Medium) | Muse Glimmer (High) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 33.8 | 17.5 | −48.2% Muse Glimmer (High) is 48.2% less intelligent |
| Total AA cost (lower is better) | $2,095.12 | $145.77 | −93.0% Muse Glimmer (High) is 93.0% cheaper |
| End-to-end time (lower is better) | 11.17s | 24.78s | +121.8% Muse Glimmer (High) is 121.8% slower |
| Price per 1M tokens (in / out) | $5.00 / $30.0 | $0.30 / $1.20 | |
| Input modalities | Text, Image | Text, Image |
Muse Glimmer (High) vs GPT-5.5 (Medium): 48.2% less intelligence, 93.0% less cost to run the AA benchmark, and 121.8% slower end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-5.5 (Medium) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
- Muse Glimmer (High) is off the frontier: at the same or lower cost, GPT-6 Luna (Max) scores 38.10 for $122.
GPT-5.5 (Medium)Muse Glimmer (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/gpt-5-5-medium/muse-glimmer · Markdown: /api/v1/compare/gpt-5-5-medium/muse-glimmer?format=md · llms.txt · agent skill