Celeris-1 vs GPT-5.6 Luna (Medium)
Which is better for the money: Celeris-1 by Celeris or GPT-5.6 Luna (Medium) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-25.
Clear winner
Verdict
Pick GPT-5.6 Luna (Medium)
GPT-5.6 Luna (Medium) vs Celeris-1: 296.8% more intelligence, 26.1% less cost to run the AA benchmark, and 619.8% slower end-to-end.
| Metric | Celeris-1 | GPT-5.6 Luna (Medium) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 6.3 | 25.0 | +296.8% GPT-5.6 Luna (Medium) is 4.0× more intelligent |
| Total AA cost (lower is better) | $59.99 | $44.32 | −26.1% GPT-5.6 Luna (Medium) is 26.1% cheaper |
| End-to-end time (lower is better) | 0.86s | 6.19s | +619.8% GPT-5.6 Luna (Medium) is 619.8% slower |
| Price per 1M tokens (in / out) | $0.20 / $0.70 | $0.20 / $1.20 | |
| Input modalities | Text, Image | Text, Image |
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.
- GPT-5.6 Luna (Medium) is off the frontier: at the same or lower cost, GPT-6 Luna (Medium) scores 29.90 for $31.2.
Celeris-1GPT-5.6 Luna (Medium)Today's Pareto 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/gpt-5-6-luna-medium · Markdown: /api/v1/compare/celeris-1/gpt-5-6-luna-medium?format=md · llms.txt · agent skill