GPT-5.6 Luna (Low) vs Muse Spark 1.2 (Xhigh)
Which is better for the money: GPT-5.6 Luna (Low) by OpenAI or Muse Spark 1.2 (Xhigh) by Meta? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.
Trade-off
Verdict
Depends on your budget
Muse Spark 1.2 (Xhigh) scores 18.6 points higher (39.6 vs 21.0) but costs 63× as much to run the benchmark ($1715 vs $27.0; premium vs budget cost classes). They are not alternatives at one budget: pick Muse Spark 1.2 (Xhigh) when you need intelligence above 21.0, and GPT-5.6 Luna (Low) when 21.0 is enough.
| Metric | GPT-5.6 Luna (Low) | Muse Spark 1.2 (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 21.0 | 39.6 | +88.6% Muse Spark 1.2 (Xhigh) is 88.6% more intelligent |
| Total AA cost (lower is better) | $27.02 | $1,714.78 | +6246.3% Muse Spark 1.2 (Xhigh) is 63× more expensive |
| End-to-end time (lower is better) | 5.78s | 20.01s | +246.2% Muse Spark 1.2 (Xhigh) is 246.2% slower |
| Price per 1M tokens (in / out) | $0.20 / $1.20 | $1.25 / $4.25 | |
| Input modalities | Text, Image | Text, Image, Speech, Video |
Muse Spark 1.2 (Xhigh) vs GPT-5.6 Luna (Low): 88.6% more intelligence, 6246.3% more cost to run the AA benchmark, and 246.2% slower end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-5.6 Luna (Low) is off the frontier: at the same or lower cost, GPT-6 Luna (Low) scores 21.50 for $10.6.
- Muse Spark 1.2 (Xhigh) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
GPT-5.6 Luna (Low)Muse Spark 1.2 (Xhigh)Today's Pareto frontierEvery other model
Matchup
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