Celeris-1 vs Claude Opus 5.5 (High, Default Fallback)
Which is better for the money: Celeris-1 by Celeris or Claude Opus 5.5 (High, 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 Opus 5.5 (High, Default Fallback) scores 47.3 points higher (53.6 vs 6.3) but costs 36× as much to run the benchmark ($2172 vs $60.0; flagship vs mid-range cost classes). They are not alternatives at one budget: pick Claude Opus 5.5 (High, Default Fallback) when you need intelligence above 6.3, and Celeris-1 when 6.3 is enough.
| Metric | Celeris-1 | Claude Opus 5.5 (High, Default Fallback) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 6.3 | 53.6 | +750.8% Claude Opus 5.5 (High… is 8.5× more intelligent |
| Total AA cost (lower is better) | $59.99 | $2,172.43 | +3521.3% Claude Opus 5.5 (High… is 36× more expensive |
| End-to-end time (lower is better) | 0.87s | 33.81s | +3786.2% Claude Opus 5.5 (High… is 3786.2% slower |
| Price per 1M tokens (in / out) | $0.20 / $0.70 | $4.00 / $20.0 | |
| Input modalities | Text, Image | Text, Image |
Claude Opus 5.5 (High, Default Fallback) vs Celeris-1: 750.8% more intelligence, 3521.3% more cost to run the AA benchmark, and 3786.2% 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 Opus 5.5 (High, Default Fallback) is on today's frontier: nothing is both smarter and cheaper.
Celeris-1Claude Opus 5.5 (High, Default Fallback)Today's Pareto frontierEvery other model
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