z.ai

The zai provider routes to z.ai’s GLM models. z.ai exposes two compatible surfaces and crabllm uses both: an OpenAI-compatible endpoint for chat, streaming, and embeddings, and a native Anthropic-compatible endpoint for Anthropic-format passthrough. Authentication is a bearer token on both.

Configuration

[providers.zai]        # section name doubles as kind; add `kind = "zai"` only if you rename it
api_key = "${ZAI_API_KEY}"
models = ["glm-4.7", "glm-4.7-flash", "glm-5"]

Defaults, no base_url needed:

• OpenAI-compatible: https://api.z.ai/api/paas/v4
• Anthropic-compatible: https://api.z.ai/api/anthropic/v1 (the /v1/messages path the Anthropic SDK / Claude Code resolve from ANTHROPIC_BASE_URL)

Set base_url to override the OpenAI-compatible origin (e.g. a regional or proxied endpoint).

Usage

Send requests in OpenAI format as usual — just set the model to a GLM id:

curl http://localhost:8080/v1/chat/completions \
  -H "Content-Type: application/json" \
  -d '{
    "model": "glm-4.7",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Anthropic-format requests are served natively by z.ai’s Anthropic-compatible endpoint rather than translated.

Supported Endpoints

• Chat completions (streaming and non-streaming)
• Embeddings
• Anthropic Messages (native passthrough, streaming and non-streaming)
• Tool/function calling

Limitations

• Image generation and audio endpoints are not offered by z.ai.