Moonshot AI

Access 6 Moonshot AI models through Mastra's model router. Authentication is handled automatically using the MOONSHOT_API_KEY environment variable.

Learn more in the Moonshot AI documentation.

MOONSHOT_API_KEY=your-api-key

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

const agent = new Agent({
  id: "my-agent",
  name: "My Agent",
  instructions: "You are a helpful assistant",
  model: "moonshotai/kimi-k2-0711-preview"
});

// 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 Moonshot AI documentation for details.

:::

Models

<ProviderModelsTable models={[ { "model": "moonshotai/kimi-k2-0711-preview", "imageInput": false, "audioInput": false, "videoInput": false, "toolUsage": true, "reasoning": false, "contextWindow": 131072, "maxOutput": 16384, "inputCost": 0.6, "outputCost": 2.5 }, { "model": "moonshotai/kimi-k2-0905-preview", "imageInput": false, "audioInput": false, "videoInput": false, "toolUsage": true, "reasoning": false, "contextWindow": 262144, "maxOutput": 262144, "inputCost": 0.6, "outputCost": 2.5 }, { "model": "moonshotai/kimi-k2-thinking", "imageInput": false, "audioInput": false, "videoInput": false, "toolUsage": true, "reasoning": true, "contextWindow": 262144, "maxOutput": 262144, "inputCost": 0.6, "outputCost": 2.5 }, { "model": "moonshotai/kimi-k2-thinking-turbo", "imageInput": false, "audioInput": false, "videoInput": false, "toolUsage": true, "reasoning": true, "contextWindow": 262144, "maxOutput": 262144, "inputCost": 1.15, "outputCost": 8 }, { "model": "moonshotai/kimi-k2-turbo-preview", "imageInput": false, "audioInput": false, "videoInput": false, "toolUsage": true, "reasoning": false, "contextWindow": 262144, "maxOutput": 262144, "inputCost": 2.4, "outputCost": 10 }, { "model": "moonshotai/kimi-k2.5", "imageInput": true, "audioInput": false, "videoInput": true, "toolUsage": true, "reasoning": true, "contextWindow": 262144, "maxOutput": 262144, "inputCost": 0.6, "outputCost": 3 } ]} />

Advanced configuration

Custom headers

const agent = new Agent({
  id: "custom-agent",
  name: "custom-agent",
  model: {
    url: "https://api.moonshot.ai/anthropic/v1",
    id: "moonshotai/kimi-k2-0711-preview",
    apiKey: process.env.MOONSHOT_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
      ? "moonshotai/kimi-k2.5"
      : "moonshotai/kimi-k2-0711-preview";
  }
});