Bibliography (6):

1. https://www.nytimes.com/2024/09/27/technology/openai-chatgpt-investors-funding.html

2. https://openai.com/blog/chatgpt/

3. https://www.bloomberg.com/news/articles/2024-09-05/openai-hits-1-million-paid-users-for-business-version-of-chatgpt

4. https://www.bloomberg.com/news/articles/2024-12-05/openai-adds-200-monthly-chatgpt-pro-subscription-with-new-model

5. https://www.bloomberg.com/news/articles/2024-12-10/openai-cfo-thinks-business-users-will-pay-thousands-for-ai-software

6. Wikipedia Bibliography:

   1. OpenAI