Z.ai

GLM 5.3

glm-5.3

Z.ai's flagship mixture-of-experts model, with reasoning effort you set per request. It holds up on long-horizon agentic work and coding over a whole repository rather than a file at a time.

Input: Text
Context window: 262K tokens
Precision: 4 bits
Price per 1M tokens: Coming soon
Integration: OpenAI-compatible API

ReasoningConfigurable effortMoE

Playground

GLM 5.3

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API documentation ↗

Client Libraries

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