Ofox

Access 13 Ofox models through Mastra's model router. Authentication is handled automatically using the OFOX_API_KEY environment variable.

Learn more in the Ofox documentation.

.env

OFOX_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: "ofox/anthropic/claude-fable-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 Ofox documentation for details.

Models

13 available models

Model	Context	Tools	Reasoning	Image	Audio	Video	Input $/1M	Output $/1M
ofox/anthropic/claude-fable-5	1.0M						$10	$50
ofox/anthropic/claude-opus-4.8	1.0M						$5	$25
ofox/anthropic/claude-sonnet-5	1.0M						$2	$10
ofox/bailian/qwen3.7-max	1.0M						$3	$8
ofox/deepseek/deepseek-v4-pro	1.0M						$0.45	$0.88
ofox/google/gemini-3.1-pro-preview	1.0M						$2	$12
ofox/moonshotai/kimi-k2.6	262K						$0.95	$4
ofox/openai/gpt-5.5	1.1M						$5	$30
ofox/openai/gpt-5.6-luna	1.1M						$1	$6
ofox/openai/gpt-5.6-sol	1.1M						$5	$30
ofox/openai/gpt-5.6-terra	1.1M						$3	$15
ofox/x-ai/grok-4.3	1.0M						$1	$3
ofox/z-ai/glm-5.2	1.0M						$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.ofox.ai/v1",
    id: "ofox/anthropic/claude-fable-5",
    apiKey: process.env.OFOX_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
      ? "ofox/z-ai/glm-5.2"
      : "ofox/anthropic/claude-fable-5";
  }
});