Celeris-1 vs Claude Fable 5.1 (High, Default Fallback)
Which is better for the money: Celeris-1 by Celeris or Claude Fable 5.1 (High, Default Fallback) by Anthropic? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-25.
Trade-off
Verdict
Depends on your budget
Claude Fable 5.1 (High, Default Fallbac… scores 44.9 points higher (51.2 vs 6.3) but costs 87× as much to run the benchmark ($5242 vs $60.0; flagship vs mid-range cost classes). They are not alternatives at one budget: pick Claude Fable 5.1 (High, Default Fallbac… when you need intelligence above 6.3, and Celeris-1 when 6.3 is enough.
| Metric | Celeris-1 | Claude Fable 5.1 (High, Default Fallback) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 6.3 | 51.2 | +712.7% Claude Fable 5.1 (Hig… is 8.1× more intelligent |
| Total AA cost (lower is better) | $59.99 | $5,241.59 | +8637.4% Claude Fable 5.1 (Hig… is 87× more expensive |
| End-to-end time (lower is better) | 0.87s | 28.52s | +3178.2% Claude Fable 5.1 (Hig… is 3178.2% slower |
| Price per 1M tokens (in / out) | $0.20 / $0.70 | $10.0 / $50.0 | |
| Input modalities | Text, Image | Text, Image |
Claude Fable 5.1 (High, Default Fallback) vs Celeris-1: 712.7% more intelligence, 8637.4% more cost to run the AA benchmark, and 3178.2% slower end-to-end.
Today's Pareto frontier
Against the frontier
- Celeris-1 is off the frontier: at the same or lower cost, Claude Haiku 5.5 (Medium) scores 34.50 for $56.4.
- 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.
Celeris-1Claude Fable 5.1 (High, Default Fallback)Today's Pareto frontierEvery other model
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