Celeris-1 vs Step 5 Preview
Which is better for the money: Celeris-1 by Celeris or Step 5 Preview by StepFun? 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
Step 5 Preview scores 37.4 points higher (43.7 vs 6.3) but costs 20× as much to run the benchmark ($1190 vs $60.0; premium vs mid-range cost classes). They are not alternatives at one budget: pick Step 5 Preview when you need intelligence above 6.3, and Celeris-1 when 6.3 is enough.
| Metric | Celeris-1 | Step 5 Preview | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 6.3 | 43.7 | +593.7% Step 5 Preview is 6.9× more intelligent |
| Total AA cost (lower is better) | $59.99 | $1,190.26 | +1884.1% Step 5 Preview is 20× more expensive |
| End-to-end time (lower is better) | 0.87s | 12.08s | +1288.5% Step 5 Preview is 1288.5% slower |
| Price per 1M tokens (in / out) | $0.20 / $0.70 | $1.00 / $2.70 | |
| Input modalities | Text, Image | Text, Image |
Step 5 Preview vs Celeris-1: 593.7% more intelligence, 1884.1% more cost to run the AA benchmark, and 1288.5% 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.
- Step 5 Preview is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
Celeris-1Step 5 PreviewToday's Pareto frontierOpen-weights frontierEvery other model
Matchup
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/celeris-1/step-5 · Markdown: /api/v1/compare/celeris-1/step-5?format=md · llms.txt · agent skill