Mixlayer

Access 5 Mixlayer models through Mastra's model router. Authentication is handled automatically using the MIXLAYER_API_KEY environment variable.

Learn more in the Mixlayer documentation.

.env

MIXLAYER_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: "mixlayer/qwen/qwen3.5-122b-a10b"
});

// 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 Mixlayer documentation for details.

Models

5 available models

Model	Context	Tools	Reasoning	Image	Audio	Video	Input $/1M	Output $/1M
mixlayer/qwen/qwen3.5-122b-a10b	262K						$0.40	$3
mixlayer/qwen/qwen3.5-27b	262K						$0.30	$2
mixlayer/qwen/qwen3.5-35b-a3b	262K						$0.25	$1
mixlayer/qwen/qwen3.5-397b-a17b	262K						$0.60	$4
mixlayer/qwen/qwen3.5-9b	262K						$0.10	$0.40

Advanced configuration

Custom headers

src/mastra/agents/my-agent.ts

const agent = new Agent({
  id: "custom-agent",
  name: "custom-agent",
  model: {
    url: "https://models.mixlayer.ai/v1",
    id: "mixlayer/qwen/qwen3.5-122b-a10b",
    apiKey: process.env.MIXLAYER_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
      ? "mixlayer/qwen/qwen3.5-9b"
      : "mixlayer/qwen/qwen3.5-122b-a10b";
  }
});