Celeris-1 vs Claude Fable 5.1 (Low, Default Fallback)
Which is better for the money: Celeris-1 by Celeris or Claude Fable 5.1 (Low, Default Fallback) by Anthropic? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-24.
Trade-off
Verdict
Depends on your budget
Claude Fable 5.1 (Low, Default Fallback) scores 40.5 points higher (46.8 vs 6.3) but costs 53× as much to run the benchmark ($3158 vs $60.0; flagship vs mid-range cost classes). They are not alternatives at one budget: pick Claude Fable 5.1 (Low, Default Fallback) when you need intelligence above 6.3, and Celeris-1 when 6.3 is enough.
| Metric | Celeris-1 | Claude Fable 5.1 (Low, Default Fallback) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 6.3 | 46.8 | +642.9% Claude Fable 5.1 (Low… is 7.4× more intelligent |
| Total AA cost (lower is better) | $59.99 | $3,157.66 | +5163.6% Claude Fable 5.1 (Low… is 53× more expensive |
| End-to-end time (lower is better) | 0.87s | 10.46s | +1102.3% Claude Fable 5.1 (Low… is 1102.3% 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 (Low, Default Fallback) vs Celeris-1: 642.9% more intelligence, 5163.6% more cost to run the AA benchmark, and 1102.3% 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 (Low, Default Fallback) is off the frontier: at the same or lower cost, Kimi K3.1 Pro scores 55.10 for $3117.
Celeris-1Claude Fable 5.1 (Low, Default Fallback)Today's Pareto frontierEvery other model
Matchup
Compare something else
Agents:
Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/celeris-1/claude-fable-5-1-low · Markdown: /api/v1/compare/celeris-1/claude-fable-5-1-low?format=md · llms.txt · agent skill