Claude Sonnet 5 (Xhigh) vs GPT-6 Luna (Non-reasoning)
Which is better for the money: Claude Sonnet 5 (Xhigh) 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 Sonnet 5 (Xhigh) scores 15.9 points higher (34.4 vs 18.5) but costs 170× as much to run the benchmark ($3255 vs $19.2; flagship vs budget cost classes). They are not alternatives at one budget: pick Claude Sonnet 5 (Xhigh) when you need intelligence above 18.5, and GPT-6 Luna (Non-reasoning) when 18.5 is enough.
| Metric | Claude Sonnet 5 (Xhigh) | GPT-6 Luna (Non-reasoning) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 34.4 | 18.5 | −46.2% GPT-6 Luna (Non-reaso… is 46.2% less intelligent |
| Total AA cost (lower is better) | $3,255.40 | $19.16 | −99.4% GPT-6 Luna (Non-reaso… is 99.4% cheaper |
| End-to-end time (lower is better) | 32.44s | 5.05s | −84.4% GPT-6 Luna (Non-reaso… is 84.4% faster |
| Price per 1M tokens (in / out) | $2.00 / $10.0 | $0.10 / $0.50 | |
| Input modalities | Text, Image | Text, Image |
GPT-6 Luna (Non-reasoning) vs Claude Sonnet 5 (Xhigh): 46.2% less intelligence, 99.4% less cost to run the AA benchmark, and 84.4% faster end-to-end.
Today's Pareto frontier
Against the frontier
- Claude Sonnet 5 (Xhigh) is off the frontier: at the same or lower cost, Kimi K3.1 Pro scores 55.10 for $3117.
- 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 Sonnet 5 (Xhigh)GPT-6 Luna (Non-reasoning)Today's Pareto frontierEvery other model
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/claude-sonnet-5-xhigh/gpt-6-luna-non-reasoning · Markdown: /api/v1/compare/claude-sonnet-5-xhigh/gpt-6-luna-non-reasoning?format=md · llms.txt · agent skill