GPT-6 Luna (Low) vs Kimi K3.1 Pro
Which is better for the money: GPT-6 Luna (Low) by OpenAI or Kimi K3.1 Pro by Kimi? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-24.
Trade-off
Verdict
Depends on your budget
Kimi K3.1 Pro scores 33.6 points higher (55.1 vs 21.5) but costs 293× as much to run the benchmark ($3117 vs $10.6; flagship vs budget cost classes). They are not alternatives at one budget: pick Kimi K3.1 Pro when you need intelligence above 21.5, and GPT-6 Luna (Low) when 21.5 is enough.
| Metric | GPT-6 Luna (Low) | Kimi K3.1 Pro | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 21.5 | 55.1 | +156.3% Kimi K3.1 Pro is 2.6× more intelligent |
| Total AA cost (lower is better) | $10.63 | $3,117.31 | +29225.6% Kimi K3.1 Pro is 293× more expensive |
| End-to-end time (lower is better) | 6.60s | 42.64s | +546.1% Kimi K3.1 Pro is 546.1% slower |
| Price per 1M tokens (in / out) | $0.10 / $0.50 | $2.00 / $10.0 | |
| Input modalities | Text, Image | Text, Image |
Kimi K3.1 Pro vs GPT-6 Luna (Low): 156.3% more intelligence, 29225.6% more cost to run the AA benchmark, and 546.1% slower end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-6 Luna (Low) is on today's frontier: nothing is both smarter and cheaper.
- Kimi K3.1 Pro is on today's frontier: nothing is both smarter and cheaper.
GPT-6 Luna (Low)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-6-luna-low/kimi-k3-1-pro · Markdown: /api/v1/compare/gpt-6-luna-low/kimi-k3-1-pro?format=md · llms.txt · agent skill