Ollama has introduced cloud models in preview, enabling users to run larger AI models on datacenter-grade hardware without compromising on privacy, as the cloud does not retain user data. These models integrate seamlessly with local tools and the existing Ollama experience, allowing users to execute large-scale models that might not be feasible on personal computers. Users can interact with these cloud models through an OpenAI-compatible API, employing languages like JavaScript, Python, and cURL to perform tasks such as pulling, running, and managing models. The Ollama cloud requires users to sign in for accessing cloud models but also offers an option to sign out if preferred.