Vapi's new Knowledge Base feature allows business owners and developers to integrate custom documents and files into their voice AI assistants, streamlining the process of training voicebots and enhancing user experiences. This feature is particularly useful for businesses requiring high levels of personalization and customization, as well as for industries such as healthcare where accuracy and reliability are paramount. With the Knowledge Base, users can upload various file types, including Markdown, PDF, plain text, and Microsoft Word formats, and track progress in real-time. Developers can use this feature to automate the process of uploading and integrating custom files, freeing up time for development and testing, while also creating personalized and empathetic responses using natural language processing and machine learning algorithms.