Claude Fable 5.1 (High, Default Fallback) vs GPT-5.4 mini (Xhigh)
Which is better for the money: Claude Fable 5.1 (High, Default Fallback) by Anthropic or GPT-5.4 mini (Xhigh) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.
Depends on your budget
Claude Fable 5.1 (High, Default Fallbac… scores 27.1 points higher (51.2 vs 24.1) but costs 3.4× as much to run the benchmark ($5242 vs $1524; flagship vs premium cost classes). They are not alternatives at one budget: pick Claude Fable 5.1 (High, Default Fallbac… when you need intelligence above 24.1, and GPT-5.4 mini (Xhigh) when 24.1 is enough.
| Metric | Claude Fable 5.1 (High, Default Fallback) | GPT-5.4 mini (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 51.2 | 24.1 | −52.9% GPT-5.4 mini (Xhigh) is 52.9% less intelligent |
| Total AA cost (lower is better) | $5,241.59 | $1,524.02 | −70.9% GPT-5.4 mini (Xhigh) is 70.9% cheaper |
| End-to-end time (lower is better) | 28.58s | 108.46s | +279.5% GPT-5.4 mini (Xhigh) is 279.5% slower |
| Price per 1M tokens (in / out) | $10.0 / $50.0 | $0.75 / $4.50 | |
| Input modalities | Text, Image | Text, Image |
GPT-5.4 mini (Xhigh) vs Claude Fable 5.1 (High, Default Fallback): 52.9% less intelligence, 70.9% less cost to run the AA benchmark, and 279.5% slower end-to-end.
Against the frontier
- Claude Fable 5.1 (High, Default Fallback) is off the frontier: at the same or lower cost, Claude Opus 5.5 (Xhigh, Default Fallback) scores 56.00 for $4057.
- GPT-5.4 mini (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-high/gpt-5-4-mini · Markdown: /api/v1/compare/claude-fable-5-1-high/gpt-5-4-mini?format=md · llms.txt · agent skill