OpenRouter

OpenRouter is a unified API marketplace that provides seamless access to over 300 AI language models from 50+ providers through a single interface. Founded by Alex Atallah (co-founder of OpenSea), it offers a standardized API that's fully compatible with OpenAI''s SDK, allowing developers to easily switch between models or providers without code changes.

The platform features intelligent routing capabilities that automatically balance requests across providers based on availability, performance, and cost preferences. This ensures maximum uptime and reliability for AI applications, as the system can automatically route around provider outages or performance issues.

OpenRouter uses a simple credit-based payment system, where users purchase credits that can be used across any model from any provider, eliminating the need for multiple subscriptions. The platform adds minimal latency, with just ~30ms overhead between users and model inference.

Advanced features include customizable provider routing, data policy enforcement, quantization level selection, and detailed analytics on model usage. For organizations with specific requirements, OpenRouter offers fine-grained controls over which providers can be used, ensuring compliance with internal data policies and security requirements.