glm-5.3

Overview

GLM-5.3 is a large-scale reasoning model from Z.ai, built for complex software engineering and long-horizon agent tasks. It supports text input and output with a 1M-token context window, and improves on GLM-5.2 in coding and in the balance between performance and token efficiency.

• Model type: Text generation
• Input: Text
• Output: Text
• Endpoints: chat_completion

Code example

Call with glm-5.3 :

curl https://www.starunion.net/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "glm-5.3",
    "messages": [{ "role": "user", "content": "Hello" }]
  }'