GLM API

Z.ai's GLM-5.3, GLM-5.3 Flash and GLM-5.2 with a 1M-token context, through one key and prepaid credit.

GLM (Z.ai) models and pricing

Model	Context	Input / 1M	Output / 1M	Cached / 1M
GLM-5.3 z-ai/glm-5.3	1M	$1.82	$5.72	$0.34
GLM-5.3 Flash z-ai/glm-5.3-flash	1M	$0.20	$0.65	$0.039
GLM-5.2 z-ai/glm-5.2	1M	$1.82	$5.72	$0.27

USD per million tokens. Billed from prepaid credit; every response reports its exact cost.

Quick start

curl https://solorouter.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $SOLO_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "z-ai/glm-5.3", "messages": [{"role": "user", "content": "Hello"}]}'

Works with LangChain, Cline, Continue, Open WebUI and any tool that lets you set a base URL: use https://solorouter.ai/api/v1. See the docs.

Frequently asked questions

How do I get GLM-5.3 API access?

Create a Solo Router key and use the model z-ai/glm-5.3. GLM-5.3 Flash (z-ai/glm-5.3-flash) is the fast, low-cost option.

What is GLM-5.3 good at?

GLM-5.3 is strong at coding and agentic tasks; GLM-5.3 Flash is a cheap everyday model with a 1M context.

Get your API key in 30 seconds

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