Introduction

Say you're building a support-ticket assistant, and you want to compare how GPT , Claude , and Llama each handle the same customer message before picking one. Normally that means signing up with three separate providers, learning three different authentication schemes, and rewriting your request code three times just to run one comparison.

OpenRouter removes that repetition. It sits in front of dozens of providers and exposes them through a single API, so switching from one model to another is a one-line change instead of a new integration. Your Python code stays exactly the same regardless of which provider is actually answering the request.…