The Apollo GraphOS free plan offers a forever-free API orchestration platform, ideal for personal projects, learning, or prototyping with GraphQL. The platform includes services such as GraphOS Explorer IDE, GraphOS Registry, and GraphOS Insights, which help build, manage, and orchestrate APIs at any scale. The free plan has limitations, including rate limits on self-hosted routers and limited access to features like Single Sign-On and advanced collaboration tools. To get started, anyone can create an organization by signing up for GraphOS or logging into Apollo Studio with their existing account. The platform provides a complete API orchestration solution with functionalities such as filtering and transforming data, executing operations synchronously and in parallel, managing authentication and authorization, and integrating diverse data sources seamlessly.