Claude Fable 5.1 (Medium, Default Fallback) vs Muse Spark Open (Xhigh)
Which is better for the money: Claude Fable 5.1 (Medium, 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 (Medium, Default Fallb… scores 10.0 points higher (48.9 vs 38.9) but costs 3.4× as much to run the benchmark ($3983 vs $1185; flagship vs premium cost classes). They are not alternatives at one budget: pick Claude Fable 5.1 (Medium, Default Fallb… when you need intelligence above 38.9, and Muse Spark Open (Xhigh) when 38.9 is enough.
| Metric | Claude Fable 5.1 (Medium, Default Fallback) | Muse Spark Open (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 48.9 | 38.9 | −20.4% Muse Spark Open (Xhig… is 20.4% less intelligent |
| Total AA cost (lower is better) | $3,983.28 | $1,184.90 | −70.3% Muse Spark Open (Xhig… is 70.3% cheaper |
| End-to-end time (lower is better) | 14.35s | 17.05s | +18.8% Muse Spark Open (Xhig… is 18.8% slower |
| 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 (Medium, Default Fallback): 20.4% less intelligence, 70.3% less cost to run the AA benchmark, and 18.8% slower end-to-end.
Against the frontier
- Claude Fable 5.1 (Medium, Default Fallback) is off the frontier: at the same or lower cost, Kimi K3.1 Pro scores 55.10 for $3117.
- 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-medium/muse-spark-open · Markdown: /api/v1/compare/claude-fable-5-1-medium/muse-spark-open?format=md · llms.txt · agent skill