GPT-5.5 (Medium) vs Muse Spark Open (Xhigh)
Which is better for the money: GPT-5.5 (Medium) by OpenAI or Muse Spark Open (Xhigh) by Meta? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-25.
Clear winner
Verdict
Pick Muse Spark Open (Xhigh)
Muse Spark Open (Xhigh) vs GPT-5.5 (Medium): 15.1% more intelligence, 43.4% less cost to run the AA benchmark, and 73.9% slower end-to-end.
| Metric | GPT-5.5 (Medium) | Muse Spark Open (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 33.8 | 38.9 | +15.1% Muse Spark Open (Xhig… is 15.1% more intelligent |
| Total AA cost (lower is better) | $2,095.12 | $1,184.90 | −43.4% Muse Spark Open (Xhig… is 43.4% cheaper |
| End-to-end time (lower is better) | 9.97s | 17.34s | +73.9% Muse Spark Open (Xhig… is 73.9% slower |
| Price per 1M tokens (in / out) | $5.00 / $30.0 | $1.25 / $4.25 | |
| Input modalities | Text, Image | Text, Image, Speech, Video |
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 Spark Open (Xhigh) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
GPT-5.5 (Medium)Muse Spark Open (Xhigh)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-5-5-medium/muse-spark-open · Markdown: /api/v1/compare/gpt-5-5-medium/muse-spark-open?format=md · llms.txt · agent skill