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

Which is better for the money: GPT-6 Astra (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 Astra (Max)Off the frontier

Intelligence: 52.70
Total cost: $5324

KimiKimi K3 (Max)Off the frontier

Intelligence: 43.60
Total cost: $3658

Verdict

Depends on your budget

GPT-6 Astra (Max) scores 9.1 points higher (52.7 vs 43.6) but costs 1.5× as much to run the benchmark ($5324 vs $3658; both flagship class). Pick GPT-6 Astra (Max) when the extra intelligence is worth the premium, otherwise Kimi K3 (Max).

Metric	GPT-6 Astra (Max)	Kimi K3 (Max)	Difference
Intelligence (higher is better)	52.7	43.6	−17.3% Kimi K3 (Max) is 17.3% less intelligent
Total AA cost (lower is better)	$5,324.10	$3,658.07	−31.3% Kimi K3 (Max) is 31.3% cheaper
End-to-end time (lower is better)	280.26s	56.93s	−79.7% Kimi K3 (Max) is 79.7% faster
Price per 1M tokens (in / out)	$10.0 / $50.0	$3.00 / $15.0
Input modalities	Text, Image	Text, Image

Kimi K3 (Max) vs GPT-6 Astra (Max): 17.3% less intelligence, 31.3% less cost to run the AA benchmark, and 79.7% faster end-to-end.

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

Today's Pareto frontier

Against the frontier

GPT-6 Astra (Max) is off the frontier: at the same or lower cost, Claude Opus 5.5 (Xhigh, Default Fallback) scores 56.00 for $4057.
Kimi K3 (Max) is off the frontier: at the same or lower cost, Kimi K3.1 Pro scores 55.10 for $3117.

GPT-6 Astra (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-astra/kimi-k3 · Markdown: /api/v1/compare/gpt-6-astra/kimi-k3?format=md · llms.txt · agent skill