Use Compose from AI SDK

npm install ai @ai-sdk/openai-compatible

import { createOpenAICompatible } from "@ai-sdk/openai-compatible";

export const compose = createOpenAICompatible({
  name: "compose-market",
  baseURL: "https://api.compose.market/external/v1",
  apiKey: process.env.COMPOSE_MARKET_API_KEY,
  includeUsage: true,
});

import { generateText } from "ai";
import { compose } from "./compose";

const result = await generateText({
  model: compose("gpt-5.5"),
  messages: [
    { role: "user", content: "Write a short release note." },
  ],
});

console.log(result.text);

const azure = compose("gpt-5.5");
const openai = compose("openai/gpt-5.5");