InferX

Access 12 InferX models through Mastra's model router. Authentication is handled automatically using the INFERX_API_KEY environment variable.

Learn more in the InferX documentation.

.env

INFERX_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: "inferx/Agents-A1"
});

// 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 InferX documentation for details.

Models

12 available models

Model	Context	Tools	Reasoning	Image	Audio	Video	Input $/1M	Output $/1M
inferx/Agents-A1	262K						—	—
inferx/deepseek-v4-flash	1.0M						—	—
inferx/Devstral-2-123B-Instruct-2512-int4-AutoRound	128K						—	—
inferx/gemma-4-31B-it-fp8	262K						—	—
inferx/mimo-v25	1.0M						—	—
inferx/Ornith-1.0-35B-FP8	262K						—	—
inferx/Qwen3-Coder-Next-FP8	256K						—	—
inferx/Qwen3-Coder-Next-FP8-no-thinking	260K						—	—
inferx/Qwen3-Embedding-8B	33K						—	—
inferx/Qwen3.6-27B-FP8	262K						—	—
inferx/Qwen3.6-35B-A3B-FP8	262K						—	—
inferx/Qwen3.6-35B-A3B-fp8-no-thinking	262K						—	—

Advanced configuration

Custom headers

src/mastra/agents/my-agent.ts

const agent = new Agent({
  id: "custom-agent",
  name: "custom-agent",
  model: {
    url: "https://model.inferx.net/endpoints/v1",
    id: "inferx/Agents-A1",
    apiKey: process.env.INFERX_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
      ? "inferx/mimo-v25"
      : "inferx/Agents-A1";
  }
});