Kimi K3 vs GLM-5.3

Moonshot AI's Kimi K3 and Zhipu AI's GLM-5.3 compared on specs, pricing, and capabilities — as configured in AI Crucible ensembles.

GLM-5.3 input tokens are 2.1x cheaper than Kimi K3 ($1.68 vs $3.60 per 1M tokens).
GLM-5.3 output tokens are 3.4x cheaper than Kimi K3 ($5.28 vs $18.00 per 1M tokens).
Kimi K3 offers the larger context window: 1.048576M tokens vs 1M tokens for GLM-5.3.
Kimi K3 accepts image inputs; GLM-5.3 is text-only in AI Crucible.

Specification	Kimi K3	GLM-5.3
Provider	Moonshot AI	Zhipu AI
API model ID	kimi-k3	zai-org/GLM-5.3
Description	Moonshot AI's 2.8T-parameter flagship for long-horizon coding and knowledge work, with always-on reasoning, vision, and 1M context.	Z.AI's frontier open-weight model for coding and agentic work, with always-on reasoning and 1M context.
Context window	1.048576M tokens	1M tokens
Max output tokens	8,192	131,072
Input cost ($/1M tokens)	$3.60	$1.68
Output cost ($/1M tokens)	$18.00	$5.28
Cache read cost ($/1M tokens)	$0.36	$0.31
Latency	high	medium
Reasoning model	Yes	Yes
Vision (image input)	Yes	No
Tool use	Yes	Yes