GPT - Generative Pre-trained Transformer
Developer - OpenAI Inc.
openai.com/gpt-4
chat.openai.com
cgpt.ai
GPT Store - chat.openai.com/gpts
ChatGPT for teams - openai.com/chatgpt/team
GPT-4 on Wikipedia
GPT-3 on Wikipedia
ChatGPT on Wikipedia
openai.com/blog/chatgpt
Bing AI, chatbot