Pika is an AI tool developed by Pika that allows website owners to create and embed custom AI assistants on their websites. The tool leverages ChatGPT's capabilities to provide instant responses to customer inquiries and support in a conversational manner. With Pika, you can upload PDF files or URLs for the chatbot to learn from and provide accurate answers. Additionally, you can customize the chatbot's appearance, greeting message, and response length for a personalized experience. Pika has numerous use cases, including providing customer support, transforming your knowledge base into interactive chats, and engaging visitors in a conversational manner for lead generation and conversion. Deploying custom AI assistants with Pika can enhance user experience, improve customer support efficiency, and increase engagement.