Use Modellix LLM with Mastra

npm install @mastra/core

npm install ai @ai-sdk/openai-compatible

export MODELLIX_API_KEY="mdlx-xxxxxxxx"

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

const agent = new Agent({
  id: "modellix-agent",
  name: "Modellix Agent",
  instructions: "You are a concise coding assistant.",
  model: {
    // Gateway form: Mastra sends openai/gpt-5.5 to Modellix
    id: "modellix/openai/gpt-5.5",
    url: "https://llm.modellix.ai/v1",
    apiKey: process.env.MODELLIX_API_KEY,
  },
});

const result = await agent.generate("Introduce yourself in one sentence.");
console.log(result.text);

import { createOpenAICompatible } from "@ai-sdk/openai-compatible";
import { Agent } from "@mastra/core/agent";

const modellix = createOpenAICompatible({
  name: "modellix",
  apiKey: process.env.MODELLIX_API_KEY,
  baseURL: "https://llm.modellix.ai/v1",
});

const agent = new Agent({
  id: "modellix-agent",
  name: "Modellix Agent",
  instructions: "You are a concise coding assistant.",
  model: modellix("openai/gpt-5.5"),
});

const agent = new Agent({
  id: "resilient-agent",
  name: "Resilient Agent",
  instructions: "You are a helpful assistant.",
  model: [
    {
      model: {
        id: "modellix/openai/gpt-5.5",
        url: "https://llm.modellix.ai/v1",
        apiKey: process.env.MODELLIX_API_KEY,
      },
      maxRetries: 2,
    },
    {
      model: {
        id: "modellix/google/gemini-3.6-flash",
        url: "https://llm.modellix.ai/v1",
        apiKey: process.env.MODELLIX_API_KEY,
      },
      maxRetries: 2,
    },
  ],
});