GPT-5.6 Luna (High) vs Kimi K3 (Max)
Which is better for the money: GPT-5.6 Luna (High) by OpenAI or Kimi K3 (Max) by Kimi? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.
Trade-off
Verdict
Depends on your budget
Kimi K3 (Max) scores 11.5 points higher (43.6 vs 32.1) but costs 34× as much to run the benchmark ($3658 vs $108; flagship vs mid-range cost classes). They are not alternatives at one budget: pick Kimi K3 (Max) when you need intelligence above 32.1, and GPT-5.6 Luna (High) when 32.1 is enough.
| Metric | GPT-5.6 Luna (High) | Kimi K3 (Max) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 32.1 | 43.6 | +35.8% Kimi K3 (Max) is 35.8% more intelligent |
| Total AA cost (lower is better) | $108.15 | $3,658.07 | +3282.4% Kimi K3 (Max) is 34× more expensive |
| End-to-end time (lower is better) | 13.41s | 50.42s | +276.0% Kimi K3 (Max) is 276.0% slower |
| Price per 1M tokens (in / out) | $0.20 / $1.20 | $3.00 / $15.0 | |
| Input modalities | Text, Image | Text, Image |
Kimi K3 (Max) vs GPT-5.6 Luna (High): 35.8% more intelligence, 3282.4% more cost to run the AA benchmark, and 276.0% slower end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-5.6 Luna (High) is off the frontier: at the same or lower cost, Claude Haiku 5.5 (High) scores 37.80 for $94.1.
- Kimi K3 (Max) is off the frontier: at the same or lower cost, Kimi K3.1 Pro scores 55.10 for $3117.
GPT-5.6 Luna (High)Kimi K3 (Max)Today's Pareto frontierOpen-weights frontierEvery other model
Matchup
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-5-6-luna-high/kimi-k3 · Markdown: /api/v1/compare/gpt-5-6-luna-high/kimi-k3?format=md · llms.txt · agent skill