Khoj is a versatile personal AI application designed for Windows that enhances user capabilities through advanced language model interactions. It allows users to communicate with various local and online large language models (LLMs) such as GPT, Claude, and Mistral, providing seamless access to information from the web and personal documents. It supports a wide array of file formats including PDFs, Word documents, and markdown files, ensuring comprehensive document retrieval and management.

Additionally, Khoj offers customizable agents that can embody different personas and utilize specific knowledge bases, making it suitable for various tasks. Users can automate repetitive research activities, receive personalized newsletters, and utilize advanced semantic search to quickly find relevant documents. The application is open-source and self-hostable, allowing for private use on personal computers or through a cloud-based option.