Jan

Jan is an open-source AI platform designed to give users full control over how they run and interact with large language models. It provides a unified interface for running open-source models locally on your own hardware or connecting to popular cloud models such as GPT, Claude, and others. The primary purpose of Jan is to offer a flexible, privacy-conscious alternative to hosted AI chat services, while maintaining a familiar, chat-style user experience.

Key features include local model execution, allowing you to download and run models directly on your machine without sending data to external servers, which is valuable for sensitive or proprietary content. Jan supports multiple model backends and providers, enabling you to switch between local and cloud models in the same interface depending on performance, cost, or privacy needs. It typically offers features such as conversation history, prompt management, and configurable system prompts to tailor model behavior. As an open-source project, Jan can be extended, self-hosted, and integrated into existing workflows or development environments.