AI Builder is a collaborative and secure enterprise platform that allows users to create instant assistants using Voiceflow's platform. With Knowledge Base, users can upload a PDF and build a GPT-powered chatbot. Generative Tasks enable the creation of response variations, utterances, entities, and synonyms, while AI Freestyle allows for dynamic conversation flow. Response AI Step dynamically generates user responses based on prompts, allowing for faster and easier design. LLM functions enable variable setting in real-time, unlocking use cases like branch logic, classifying user utterances, and validating data. The platform also offers a conversation memory feature to provide context and automatically recall previous conversations. Users can get started with AI Builder by signing up for Voiceflow, creating a new assistant, and selecting the "Build AI Assistant" project type. The platform provides templates for inspiration, including customer support automation, travel assistance, sales agent, character role-playing, and conversational knowledge bases.