OpenRouter TypeScript SDK - OpenRouter

The OpenRouter TypeScript SDK is a type-safe toolkit for building AI-powered features in any JS or TS runtime, giving you access to 400+ models across providers through a single unified API.

Installation

npm

npm add @openrouter/sdk

pnpm

pnpm add @openrouter/sdk

bun

bun add @openrouter/sdk

yarn

yarn add @openrouter/sdk

This package is published as an ES Module (ESM) only. For applications using CommonJS, use await import("@openrouter/sdk") to import and use this package.

Quickstart

import { OpenRouter } from "@openrouter/sdk";

const openRouter = new OpenRouter();

const result = await openRouter.chat.send({
  chatRequest: {
    messages: [
      {
        role: "user",
        content: "Hello, how are you?",
      },
    ],
    model: "openai/gpt-5",
    provider: {
      zdr: true,
      sort: "price",
    },
    stream: true,
  },
});

for await (const chunk of result) {
  console.log(chunk.choices[0]?.delta.content);
}

API reference

Browse the API reference for each resource in the sidebar. Type definitions for every request, response, model, and operation are linked inline from each resource page.