Open-source Large Language Models (LLMs) are gaining traction due to their enhanced privacy, security, and customization potential, making them appealing for developers creating AI-powered applications. Models like Llama 3.1 and Mistral are noteworthy examples, but transitioning from closed-source models can be complex. Portkey simplifies this process by enabling seamless integration and management of open-source LLMs, supporting all major inference providers and offering features like universal API routing, intelligent fallbacks, canary testing, and comprehensive metrics. It allows for easy switching between models, robust error handling, and local model support, ensuring production-readiness and reliability. By using Portkey, developers can reduce costs, maintain data sovereignty, and join a community at the forefront of AI innovation, leveraging open-source capabilities while ensuring dependable deployment and performance.