Z.AI

Access 11 Z.AI models through Mastra's model router. Authentication is handled automatically using the ZHIPU_API_KEY environment variable.

Learn more in the Z.AI documentation.

.env

ZHIPU_API_KEY=your-api-key

src/mastra/agents/my-agent.ts

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

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

// 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);
}

info

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

Models

11 available models

Model	Context	Tools	Reasoning	Image	Audio	Video	Input $/1M	Output $/1M
zai/glm-4.5	131K						$0.60	$2
zai/glm-4.5-air	131K						$0.20	$1
zai/glm-4.5-flash	131K						—	—
zai/glm-4.5v	64K						$0.60	$2
zai/glm-4.6	205K						$0.60	$2
zai/glm-4.6v	128K						$0.30	$0.90
zai/glm-4.7	205K						$0.60	$2
zai/glm-4.7-flash	200K						—	—
zai/glm-4.7-flashx	200K						$0.07	$0.40
zai/glm-5	205K						$1	$3
zai/glm-5-turbo	200K						$1	$4

Advanced configuration

Custom headers

src/mastra/agents/my-agent.ts

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

Dynamic model selection

src/mastra/agents/my-agent.ts

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