Grok 4.5 (High) vs Kimi K3 (Max)

Which is better for the money: Grok 4.5 (High) by SpaceXAI 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

SpaceXAIGrok 4.5 (High)Off the frontier

Intelligence: 38.80
Total cost: $1244

KimiKimi K3 (Max)Off the frontier

Intelligence: 43.60
Total cost: $3658

Verdict

Depends on your budget

Kimi K3 (Max) scores 4.8 points higher (43.6 vs 38.8) but costs 2.9× as much to run the benchmark ($3658 vs $1244; flagship vs premium cost classes). Pick Kimi K3 (Max) when the extra intelligence is worth the premium, otherwise Grok 4.5 (High).

Metric	Grok 4.5 (High)	Kimi K3 (Max)	Difference
Intelligence (higher is better)	38.8	43.6	+12.4% Kimi K3 (Max) is 12.4% more intelligent
Total AA cost (lower is better)	$1,243.85	$3,658.07	+194.1% Kimi K3 (Max) is 2.9× more expensive
End-to-end time (lower is better)	18.82s	58.57s	+211.2% Kimi K3 (Max) is 211.2% slower
Price per 1M tokens (in / out)	$2.00 / $6.00	$3.00 / $15.0
Input modalities	Text, Image	Text, Image

Kimi K3 (Max) vs Grok 4.5 (High): 12.4% more intelligence, 194.1% more cost to run the AA benchmark, and 211.2% slower end-to-end.

Open this matchup in the interactive picker Grok 4.5 (High): what beats it Kimi K3 (Max): what beats it

Today's Pareto frontier

Against the frontier

Grok 4.5 (High) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
Kimi K3 (Max) is off the frontier: at the same or lower cost, Kimi K3.1 Pro scores 55.10 for $3117.

Grok 4.5 (High)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/grok-4-5/kimi-k3 · Markdown: /api/v1/compare/grok-4-5/kimi-k3?format=md · llms.txt · agent skill