LLM integration with OpenRouter (opens in new tab)

OpenRouter is a unified API gateway to hundreds of language models from providers such as OpenAI, Anthropic, Google, and Meta. You use one API key and one billing surface, and swap models by changing a provider/model slug. OpenRouter exposes a Chat Completions-compatible HTTP API. This post shows three Node.js integration paths: the official @openrouter/sdk, the openai package with baseURL, and the Vercel AI SDK with @openrouter/ai-sdk-provider. For deeper patterns on each stack, see the Chat...