Claude Fable 5.1 (Xhigh, Default Fallback) vs Grok 4.7 (Low)
Which is better for the money: Claude Fable 5.1 (Xhigh, Default Fallback) by Anthropic or Grok 4.7 (Low) by SpaceXAI? 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
Claude Fable 5.1 (Xhigh, Default Fallba… scores 11.0 points higher (53.2 vs 42.2) but costs 6.4× as much to run the benchmark ($9063 vs $1407; flagship vs premium cost classes). They are not alternatives at one budget: pick Claude Fable 5.1 (Xhigh, Default Fallba… when you need intelligence above 42.2, and Grok 4.7 (Low) when 42.2 is enough.
| Metric | Claude Fable 5.1 (Xhigh, Default Fallback) | Grok 4.7 (Low) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 53.2 | 42.2 | −20.7% Grok 4.7 (Low) is 20.7% less intelligent |
| Total AA cost (lower is better) | $9,063.11 | $1,406.89 | −84.5% Grok 4.7 (Low) is 84.5% cheaper |
| End-to-end time (lower is better) | 111.44s | 12.13s | −89.1% Grok 4.7 (Low) is 89.1% faster |
| Price per 1M tokens (in / out) | $10.0 / $50.0 | $2.00 / $6.00 | |
| Input modalities | Text, Image | Text, Image |
Grok 4.7 (Low) vs Claude Fable 5.1 (Xhigh, Default Fallback): 20.7% less intelligence, 84.5% less cost to run the AA benchmark, and 89.1% faster end-to-end.
Today's Pareto frontier
Against the frontier
- Claude Fable 5.1 (Xhigh, Default Fallback) is off the frontier: at the same or lower cost, Claude Opus 5.5 (Max, Default Fallback) scores 57.60 for $8708.
- Grok 4.7 (Low) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
Claude Fable 5.1 (Xhigh, Default Fallback)Grok 4.7 (Low)Today's Pareto frontierEvery other model
Matchup
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/claude-fable-5-1-xhigh/grok-4-7-low · Markdown: /api/v1/compare/claude-fable-5-1-xhigh/grok-4-7-low?format=md · llms.txt · agent skill