APIPark is an open-source, all-in-one LLM gateway designed to streamline the management of large language models in production. It provides a unified API signature compatible with OpenAI's format, allowing users to connect to over 200 LLMs without code changes. Key features include intelligent load balancing for seamless switching between models, fine-grained traffic control with quota management and prioritization, and comprehensive monitoring dashboards. APIPark also offers flexible prompt management, enabling users to create and modify prompt templates and convert them into reusable APIs. Security is enhanced through data masking and access control. Additional capabilities such as semantic caching (coming soon) reduce latency and LLM usage. APIPark can be integrated with various AI agents and deployed in minutes via a single command. It includes a developer portal with API billing and access management, making it suitable for enterprises looking to securely share and monetize APIs.