Claude Fable 5.1 (Max, Default Fallback) vs Muse Spark Open (Xhigh)
Which is better for the money: Claude Fable 5.1 (Max, 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.
Depends on your budget
Claude Fable 5.1 (Max, Default Fallback) scores 14.5 points higher (53.4 vs 38.9) but costs 11× as much to run the benchmark ($13129 vs $1185; flagship vs premium cost classes). They are not alternatives at one budget: pick Claude Fable 5.1 (Max, Default Fallback) when you need intelligence above 38.9, and Muse Spark Open (Xhigh) when 38.9 is enough.
| Metric | Claude Fable 5.1 (Max, Default Fallback) | Muse Spark Open (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 53.4 | 38.9 | −27.2% Muse Spark Open (Xhig… is 27.2% less intelligent |
| Total AA cost (lower is better) | $13,128.86 | $1,184.90 | −91.0% Muse Spark Open (Xhig… is 91.0% cheaper |
| End-to-end time (lower is better) | 173.79s | 17.34s | −90.0% Muse Spark Open (Xhig… is 90.0% faster |
| Price per 1M tokens (in / out) | $10.0 / $50.0 | $1.25 / $4.25 | |
| Input modalities | Text, Image | Text, Image, Speech, Video |
Muse Spark Open (Xhigh) vs Claude Fable 5.1 (Max, Default Fallback): 27.2% less intelligence, 91.0% less cost to run the AA benchmark, and 90.0% faster end-to-end.
Against the frontier
- Claude Fable 5.1 (Max, Default Fallback) is off the frontier: at the same or lower cost, Claude Opus 5.5 (Max, Default Fallback) scores 57.60 for $8708.
- Muse Spark Open (Xhigh) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
Compare something else
Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/claude-fable-5-1/muse-spark-open · Markdown: /api/v1/compare/claude-fable-5-1/muse-spark-open?format=md · llms.txt · agent skill