ChatGPT (chat based generative pre-trained transformer) was released by OpenAI in November 2022. ChatGPT is available for free and without creating an account at chatgpt.com You may experience limits on conversations if you use ChatGPT without an account. Teachers can create an account at ChatGPT but this is not required. (See Gemini for use with district issued Google account.)
This video by Matt Miller, author of Ditch That Textbook, will show you what ChatGPT 3.5 can do. Matt prompts the chatbot to create a variety of classroom resources.