GLM-5.3 (Low) vs Grok 4.3 (High)

Which is better for the money: GLM-5.3 (Low) by Z AI or Grok 4.3 (High) by SpaceXAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-25.

Trade-off

Z AIGLM-5.3 (Low)Off the frontier

Intelligence: 34.30
Total cost: $1013

SpaceXAIGrok 4.3 (High)Off the frontier

Intelligence: 24.90
Total cost: $363

Verdict

Depends on your budget

GLM-5.3 (Low) scores 9.4 points higher (34.3 vs 24.9) but costs 2.8× as much to run the benchmark ($1013 vs $363; premium vs mid-range cost classes). Pick GLM-5.3 (Low) when the extra intelligence is worth the premium, otherwise Grok 4.3 (High).

Metric	GLM-5.3 (Low)	Grok 4.3 (High)	Difference
Intelligence (higher is better)	34.3	24.9	−27.4% Grok 4.3 (High) is 27.4% less intelligent
Total AA cost (lower is better)	$1,012.50	$363.24	−64.1% Grok 4.3 (High) is 64.1% cheaper
End-to-end time (lower is better)	30.79s	27.84s	−9.6% Grok 4.3 (High) is 9.6% faster
Price per 1M tokens (in / out)	$1.40 / $4.40	$1.25 / $2.50
Input modalities	Text	Text, Image

Grok 4.3 (High) vs GLM-5.3 (Low): 27.4% less intelligence, 64.1% less cost to run the AA benchmark, and 9.6% faster end-to-end.

Open this matchup in the interactive picker GLM-5.3 (Low): what beats it Grok 4.3 (High): what beats it

Today's Pareto frontier

Against the frontier

GLM-5.3 (Low) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Xhigh) scores 51.00 for $662.
Grok 4.3 (High) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Medium) scores 47.80 for $361.

GLM-5.3 (Low)Grok 4.3 (High)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/glm-5-3-low/grok-4-3 · Markdown: /api/v1/compare/glm-5-3-low/grok-4-3?format=md · llms.txt · agent skill