Claude Sonnet 5.5 (Low, Default Fallback) vs Muse Spark Open (Xhigh)
Which is better for the money: Claude Sonnet 5.5 (Low, Default Fallback) by Anthropic 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.
Trade-off
Verdict
Depends on your budget
Muse Spark Open (Xhigh) scores 3.0 points higher (38.9 vs 35.9) but costs 2.5× as much to run the benchmark ($1185 vs $482; premium vs mid-range cost classes). Pick Muse Spark Open (Xhigh) when the extra intelligence is worth the premium, otherwise Claude Sonnet 5.5 (Low, Default Fallbac….
| Metric | Claude Sonnet 5.5 (Low, Default Fallback) | Muse Spark Open (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 35.9 | 38.9 | +8.4% Muse Spark Open (Xhig… is 8.4% more intelligent |
| Total AA cost (lower is better) | $482.13 | $1,184.90 | +145.8% Muse Spark Open (Xhig… is 2.5× more expensive |
| End-to-end time (lower is better) | 5.94s | 17.05s | +187.0% Muse Spark Open (Xhig… is 187.0% slower |
| Price per 1M tokens (in / out) | $2.00 / $10.0 | $1.25 / $4.25 | |
| Input modalities | Text, Image | Text, Image, Speech, Video |
Muse Spark Open (Xhigh) vs Claude Sonnet 5.5 (Low, Default Fallback): 8.4% more intelligence, 145.8% more cost to run the AA benchmark, and 187.0% slower end-to-end.
Today's Pareto frontier
Against the frontier
- Claude Sonnet 5.5 (Low, Default Fallback) 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.
Claude Sonnet 5.5 (Low, Default Fallback)Muse Spark Open (Xhigh)Today's Pareto frontierOpen-weights frontierEvery other model
Matchup
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