Z.AI Coding Plan Models

Access 5 Z.AI Coding Plan models through Mastra's model router. Authentication is handled automatically using the ZHIPU_API_KEY environment variable.

Learn more in the Z.AI Coding Plan documentation.

Environment Variable

ZHIPU_API_KEY=your-api-key

Sample Code

Agent Implementation

import { Agent } from "@mastra/core/agent";

const agent = new Agent({
  id: "my-agent",
  name: "My Agent",
  instructions: "You are a helpful assistant",
  model: "zai-coding-plan/glm-4.5-air"
});

// Generate a response
const response = await agent.generate("Hello!");

// Stream a response
const stream = await agent.stream("Tell me a story");
for await (const chunk of stream) {
  console.log(chunk);
}

Mastra uses the OpenAI-compatible /chat/completions endpoint. Some provider-specific features may not be available. Check the Z.AI Coding Plan documentation for details.

Models

5 available models

Advanced Configuration

Custom Headers

const agent = new Agent({
  id: "custom-agent",
  name: "custom-agent",
  model: {
    url: "https://api.z.ai/api/coding/paas/v4",
    id: "zai-coding-plan/glm-4.5-air",
    apiKey: process.env.ZHIPU_API_KEY,
    headers: {
      "X-Custom-Header": "value"
    }
  }
});

Dynamic Model Selection

const agent = new Agent({
  id: "dynamic-agent",
  name: "Dynamic Agent",
  model: ({ requestContext }) => {
    const useAdvanced = requestContext.task === "complex";
    return useAdvanced
      ? "zai-coding-plan/glm-5v-turbo"
      : "zai-coding-plan/glm-4.5-air";
  }
});