Vercel AI SDK with a custom OpenAI-compatible provider

1. 01

   Create the provider

   createOpenAI accepts baseURL and apiKey and returns a provider you can call with any catalog id.

   typescript

   import { createOpenAI } from "@ai-sdk/openai";
   
   const gateway = createOpenAI({
     baseURL: "https://uncensoredai.dev/v1",
     apiKey: process.env.UNCENSOREDAI_API_KEY,
   });
   
   const model = gateway("deepseek-v4.1-flash");

2. 02

   Stream a response

   streamText works unchanged; the usage object is available in the final result.

   streaming

   import { streamText } from "ai";
   
   const result = streamText({
     model,
     prompt: "Summarise SSE in one sentence.",
   });

Commands and configuration below are shown exactly as the tool expects them, so they stay in English.