Claude Sonnet 5 (Xhigh) vs GPT-6 Luna (Max)
Which is better for the money: Claude Sonnet 5 (Xhigh) by Anthropic or GPT-6 Luna (Max) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.
Clear winner
Verdict
Pick GPT-6 Luna (Max)
GPT-6 Luna (Max) vs Claude Sonnet 5 (Xhigh): 10.8% more intelligence, 96.3% less cost to run the AA benchmark, and 230.3% slower end-to-end.
| Metric | Claude Sonnet 5 (Xhigh) | GPT-6 Luna (Max) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 34.4 | 38.1 | +10.8% GPT-6 Luna (Max) is 10.8% more intelligent |
| Total AA cost (lower is better) | $3,255.40 | $122.05 | −96.3% GPT-6 Luna (Max) is 96.3% cheaper |
| End-to-end time (lower is better) | 28.41s | 93.85s | +230.3% GPT-6 Luna (Max) is 230.3% slower |
| Price per 1M tokens (in / out) | $2.00 / $10.0 | $0.10 / $0.50 | |
| Input modalities | Text, Image | Text, Image |
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 (Max) is on today's frontier: nothing is both smarter and cheaper.
Claude Sonnet 5 (Xhigh)GPT-6 Luna (Max)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/claude-sonnet-5-xhigh/gpt-6-luna · Markdown: /api/v1/compare/claude-sonnet-5-xhigh/gpt-6-luna?format=md · llms.txt · agent skill