GPT-5.6 Luna (High) vs Kimi K3.1 Pro
Which is better for the money: GPT-5.6 Luna (High) by OpenAI or Kimi K3.1 Pro 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 K3.1 Pro scores 23.0 points higher (55.1 vs 32.1) but costs 29× as much to run the benchmark ($3117 vs $108; flagship vs mid-range cost classes). They are not alternatives at one budget: pick Kimi K3.1 Pro 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 K3.1 Pro | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 32.1 | 55.1 | +71.7% Kimi K3.1 Pro is 71.7% more intelligent |
| Total AA cost (lower is better) | $108.15 | $3,117.31 | +2782.4% Kimi K3.1 Pro is 29× more expensive |
| End-to-end time (lower is better) | 14.62s | 52.29s | +257.7% Kimi K3.1 Pro is 257.7% slower |
| Price per 1M tokens (in / out) | $0.20 / $1.20 | $2.00 / $10.0 | |
| Input modalities | Text, Image | Text, Image |
Kimi K3.1 Pro vs GPT-5.6 Luna (High): 71.7% more intelligence, 2782.4% more cost to run the AA benchmark, and 257.7% 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 K3.1 Pro is on today's frontier: nothing is both smarter and cheaper.
GPT-5.6 Luna (High)Kimi K3.1 ProToday'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/gpt-5-6-luna-high/kimi-k3-1-pro · Markdown: /api/v1/compare/gpt-5-6-luna-high/kimi-k3-1-pro?format=md · llms.txt · agent skill