Grok 4.3 (High) vs Muse Spark Open (Xhigh)
Which is better for the money: Grok 4.3 (High) by SpaceXAI or Muse Spark Open (Xhigh) by Meta? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-24.
Trade-off
Verdict
Depends on your budget
Muse Spark Open (Xhigh) scores 14.0 points higher (38.9 vs 24.9) but costs 3.3× as much to run the benchmark ($1185 vs $363; premium vs mid-range cost classes). They are not alternatives at one budget: pick Muse Spark Open (Xhigh) when you need intelligence above 24.9, and Grok 4.3 (High) when 24.9 is enough.
| Metric | Grok 4.3 (High) | Muse Spark Open (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 24.9 | 38.9 | +56.2% Muse Spark Open (Xhig… is 56.2% more intelligent |
| Total AA cost (lower is better) | $363.24 | $1,184.90 | +226.2% Muse Spark Open (Xhig… is 3.3× more expensive |
| End-to-end time (lower is better) | 24.88s | 17.34s | −30.3% Muse Spark Open (Xhig… is 30.3% faster |
| Price per 1M tokens (in / out) | $1.25 / $2.50 | $1.25 / $4.25 | |
| Input modalities | Text, Image | Text, Image, Speech, Video |
Muse Spark Open (Xhigh) vs Grok 4.3 (High): 56.2% more intelligence, 226.2% more cost to run the AA benchmark, and 30.3% faster end-to-end.
Today's Pareto frontier
Against the frontier
- Grok 4.3 (High) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Medium) scores 47.80 for $361.
- Muse Spark Open (Xhigh) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
Grok 4.3 (High)Muse Spark Open (Xhigh)Today's Pareto frontierOpen-weights frontierEvery other model
Matchup
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