GLM 5.3 API

Z.ai reasoning flagship for complex software engineering, repository-scale context, and long-horizon agent tasks.

Provider: Z.ai | Model ID: glm-5-3 | Context Window: 1.0M tokens

Token Pricing

₹160/1M input · ₹490/1M output. Pay-as-you-go micro-metered token billing. UPI and cards accepted with zero minimum commitment.

Token Type	Price (INR)
Input Tokens	₹160/1M tokens
Output Tokens	₹490/1M tokens
Prompt Caching Input	₹20/1M tokens

OpenAI-Compatible Integration

Directly drop into existing OpenAI SDK code by updating the base URL to https://api.luminoai.co.in/v1.

curl https://api.luminoai.co.in/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $LUMINO_API_KEY" \
  -d '{
    "model": "glm-5-3",
    "messages": [
      {"role": "system", "content": "You are a helpful assistant."},
      {"role": "user", "content": "Explain KV cache in 2 sentences."}
    ]
  }'

Model Specifications

Model Identifier	`glm-5-3`
Provider	Z.ai
Category	agentic
Context Window	1.0M tokens
API Protocol	OpenAI-compatible REST API (JSON)
Endpoint	`https://api.luminoai.co.in/v1/chat/completions`

Explore all models in catalog | API Documentation | Test GLM 5.3 in Playground