Claude Opus 5 (Low) vs GPT-6 Luna (Non-reasoning)
Which is better for the money: Claude Opus 5 (Low) by Anthropic or GPT-6 Luna (Non-reasoning) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-27.
Trade-off
Verdict
Depends on your budget
Claude Opus 5 (Low) scores 20.9 points higher (39.4 vs 18.5) but costs 81× as much to run the benchmark ($1561 vs $19.2; premium vs budget cost classes). They are not alternatives at one budget: pick Claude Opus 5 (Low) when you need intelligence above 18.5, and GPT-6 Luna (Non-reasoning) when 18.5 is enough.
| Metric | Claude Opus 5 (Low) | GPT-6 Luna (Non-reasoning) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 39.4 | 18.5 | −53.0% GPT-6 Luna (Non-reaso… is 53.0% less intelligent |
| Total AA cost (lower is better) | $1,560.91 | $19.16 | −98.8% GPT-6 Luna (Non-reaso… is 98.8% cheaper |
| End-to-end time (lower is better) | 11.18s | 5.07s | −54.7% GPT-6 Luna (Non-reaso… is 54.7% faster |
| Price per 1M tokens (in / out) | $5.00 / $25.0 | $0.10 / $0.50 | |
| Input modalities | Text, Image | Text, Image |
GPT-6 Luna (Non-reasoning) vs Claude Opus 5 (Low): 53.0% less intelligence, 98.8% less cost to run the AA benchmark, and 54.7% faster end-to-end.
Today's Pareto frontier
Against the frontier
- Claude Opus 5 (Low) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
- GPT-6 Luna (Non-reasoning) is off the frontier: at the same or lower cost, GPT-6 Luna (Low) scores 21.50 for $10.6.
Claude Opus 5 (Low)GPT-6 Luna (Non-reasoning)Today's Pareto frontierEvery other model
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