Aixy

Access 11 Aixy models through Mastra's model router. Authentication is handled automatically using the AIXY_API_KEY environment variable.

Learn more in the Aixy documentation.

.env

AIXY_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: "aixy/anthropic/claude-fable-5-1"
});

// 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);
}

note

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

Models

11 available models

Model	Context	Tools	Reasoning	Image	Audio	Video	Input $/1M	Output $/1M
aixy/anthropic/claude-fable-5-1	1.0M						$10	$50
aixy/anthropic/claude-haiku-5-5	1.0M						$0.10	$0.50
aixy/anthropic/claude-opus-5-5	1.0M						$4	$20
aixy/anthropic/claude-sonnet-5-5	1.0M						$2	$10
aixy/openai/gpt-5.6-luna	1.1M						$0.20	$1
aixy/openai/gpt-5.6-sol	1.1M						$4	$20
aixy/openai/gpt-5.6-terra	1.1M						$2	$12
aixy/openai/gpt-6-astra	1.1M						$10	$50
aixy/openai/gpt-6-luna	1.1M						$0.10	$0.50
aixy/openai/gpt-6-sol	1.1M						$2	$10
aixy/openai/gpt-6.1-sol	1.1M						$2	$10

Model availability, capabilities, context windows, and pricing are sourced from models.dev and may change.

Advanced configuration

Custom headers

src/mastra/agents/my-agent.ts

const agent = new Agent({
  id: "custom-agent",
  name: "custom-agent",
  model: {
    url: "https://api.aixy-gateway.com/v1",
    id: "aixy/anthropic/claude-fable-5-1",
    apiKey: process.env.AIXY_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
      ? "aixy/openai/gpt-6.1-sol"
      : "aixy/anthropic/claude-fable-5-1";
  }
});