OpenAI has announced a significant update to its ChatGPT service, making it accessible without the need for users to sign up or log in, effective from Monday. This change aims to simplify access to the AI tool, allowing instant use and is anticipated to expand the user base by removing the barrier of account creation. However, it comes with certain limitations, such as the absence of a user history for those accessing the service without an account. This initiative, highlighted by the involvement of Microsoft ($MSFT), is part of OpenAI's broader effort to make AI more accessible and to demonstrate the potential of generative AI technologies. The decision has been covered widely across tech and business news outlets, reflecting its importance in the AI and tech industry.