Claude Fable 5.1 (Xhigh, Default Fallback) vs Claude Haiku 5.5 (Xhigh)
Which is better for the money: Claude Fable 5.1 (Xhigh, Default Fallback) by Anthropic or Claude Haiku 5.5 (Xhigh) by Anthropic? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-27.
Depends on your budget
Claude Fable 5.1 (Xhigh, Default Fallba… scores 12.0 points higher (53.2 vs 41.2) but costs 58× as much to run the benchmark ($9063 vs $158; flagship vs mid-range cost classes). They are not alternatives at one budget: pick Claude Fable 5.1 (Xhigh, Default Fallba… when you need intelligence above 41.2, and Claude Haiku 5.5 (Xhigh) when 41.2 is enough.
| Metric | Claude Fable 5.1 (Xhigh, Default Fallback) | Claude Haiku 5.5 (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 53.2 | 41.2 | −22.6% Claude Haiku 5.5 (Xhi… is 22.6% less intelligent |
| Total AA cost (lower is better) | $9,063.11 | $157.58 | −98.3% Claude Haiku 5.5 (Xhi… is 98.3% cheaper |
| End-to-end time (lower is better) | 111.68s | 75.35s | −32.5% Claude Haiku 5.5 (Xhi… is 32.5% faster |
| Price per 1M tokens (in / out) | $10.0 / $50.0 | $0.10 / $0.50 | |
| Input modalities | Text, Image | Text, Image |
Claude Haiku 5.5 (Xhigh) vs Claude Fable 5.1 (Xhigh, Default Fallback): 22.6% less intelligence, 98.3% less cost to run the AA benchmark, and 32.5% faster end-to-end.
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.
- Claude Haiku 5.5 (Xhigh) is on today's frontier: nothing is both smarter and cheaper.
Compare something else
Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/claude-fable-5-1-xhigh/claude-haiku-5-5-xhigh · Markdown: /api/v1/compare/claude-fable-5-1-xhigh/claude-haiku-5-5-xhigh?format=md · llms.txt · agent skill