OpenRouter Python SDK

Official Python SDK for the OpenRouter API — a unified gateway to 300+ LLM models across providers (OpenAI, Anthropic, Google, Meta, Mistral, etc.) via a single OpenAI-compatible endpoint. Auto-generated from OpenRouter's OpenAPI spec and updated on every API change. Fully typed with Pydantic. SDK is explicitly in beta — breaking changes can occur between minor versions without a major version bump. IMPORTANT: There are multiple competing 'openrouter' packages on PyPI (openrouter, openrouter-client, python-open-router). Only 'openrouter' (by OpenRouter) is the official SDK.