ChatGPT
It is a chatbot that uses the GPT-3 (Generative Pre-trained Transformer 3) language model developed by OpenAI to generate human-like responses to user input. The chatbot is designed to be able to carry on conversations with users in a natural, conversational manner, and can be used for a variety of purposes such as customer service, online support, and virtual assistance.
OpenAI API
OpenAI offers a number of Application Programming Interfaces (APIs) that allow developers to access the company's powerful AI models and use them in their own projects. These APIs provide access to a wide range of capabilities, including natural language processing, computer vision, and robotics.