Coconaut.ai is a platform that allows users to create custom chatbots powered by ChatGPT (GPT-3.5-Turbo or GPT-4). Users can train their chatbots with data from websites, documents, or knowledge bases. The tool integrates easily into websites with a single line of code, and offers customization options for the chatbot's name, personality, and instructions. Pricing plans vary based on the number of chatbots, message limits, and storage. Coconaut.ai also supports multiple languages and offers a free trial with up to 100 messages per month.