GPT-6 Luna (Max) vs Kimi K3 (Max)

Which is better for the money: GPT-6 Luna (Max) by OpenAI or Kimi K3 (Max) by Kimi? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-25.

Trade-off

OpenAIGPT-6 Luna (Max)On the frontier

Intelligence: 38.10
Total cost: $122

KimiKimi K3 (Max)Off the frontier

Intelligence: 43.60
Total cost: $3658

Verdict

Depends on your budget

Kimi K3 (Max) scores 5.5 points higher (43.6 vs 38.1) but costs 30× as much to run the benchmark ($3658 vs $122; flagship vs mid-range cost classes). They are not alternatives at one budget: pick Kimi K3 (Max) when you need intelligence above 38.1, and GPT-6 Luna (Max) when 38.1 is enough.

Metric	GPT-6 Luna (Max)	Kimi K3 (Max)	Difference
Intelligence (higher is better)	38.1	43.6	+14.4% Kimi K3 (Max) is 14.4% more intelligent
Total AA cost (lower is better)	$122.05	$3,658.07	+2897.2% Kimi K3 (Max) is 30× more expensive
End-to-end time (lower is better)	81.83s	56.93s	−30.4% Kimi K3 (Max) is 30.4% faster
Price per 1M tokens (in / out)	$0.10 / $0.50	$3.00 / $15.0
Input modalities	Text, Image	Text, Image

Kimi K3 (Max) vs GPT-6 Luna (Max): 14.4% more intelligence, 2897.2% more cost to run the AA benchmark, and 30.4% faster end-to-end.

Open this matchup in the interactive picker GPT-6 Luna (Max): what beats it Kimi K3 (Max): what beats it

Today's Pareto frontier

Against the frontier

GPT-6 Luna (Max) is on today's frontier: nothing is both smarter and cheaper.
Kimi K3 (Max) is off the frontier: at the same or lower cost, Kimi K3.1 Pro scores 55.10 for $3117.

GPT-6 Luna (Max)Kimi K3 (Max)Today's Pareto frontierOpen-weights frontierEvery other model

Matchup

Compare something else

Agents: Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-6-luna/kimi-k3 · Markdown: /api/v1/compare/gpt-6-luna/kimi-k3?format=md · llms.txt · agent skill