Claude Sonnet 4.6 (Max) vs GPT-5.6 Luna (Max)
Which is better for the money: Claude Sonnet 4.6 (Max) by Anthropic or GPT-5.6 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-5.6 Luna (Max)
GPT-5.6 Luna (Max) vs Claude Sonnet 4.6 (Max): 23.9% more intelligence, 93.5% less cost to run the AA benchmark, and 16.6% faster end-to-end.
| Metric | Claude Sonnet 4.6 (Max) | GPT-5.6 Luna (Max) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 30.1 | 37.3 | +23.9% GPT-5.6 Luna (Max) is 23.9% more intelligent |
| Total AA cost (lower is better) | $4,924.80 | $319.93 | −93.5% GPT-5.6 Luna (Max) is 93.5% cheaper |
| End-to-end time (lower is better) | 148.96s | 124.29s | −16.6% GPT-5.6 Luna (Max) is 16.6% faster |
| Price per 1M tokens (in / out) | $3.00 / $15.0 | $0.20 / $1.20 | |
| Input modalities | Text, Image | Text, Image |
Today's Pareto frontier
Against the frontier
- Claude Sonnet 4.6 (Max) is off the frontier: at the same or lower cost, Claude Opus 5.5 (Xhigh, Default Fallback) scores 56.00 for $4057.
- GPT-5.6 Luna (Max) is off the frontier: at the same or lower cost, MiMo-V2.6-Pro scores 46.30 for $207.
Claude Sonnet 4.6 (Max)GPT-5.6 Luna (Max)Today's Pareto frontierEvery other model
Matchup
Compare something else
Agents:
Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/claude-sonnet-4-6-adaptive/gpt-5-6-luna · Markdown: /api/v1/compare/claude-sonnet-4-6-adaptive/gpt-5-6-luna?format=md · llms.txt · agent skill