OpenAI has announced an update to its ChatGPT service, which will now allow free users to engage in unlimited text chats. This change applies to both free and paid 'Go' users. Additionally, a new 'think button' has been introduced to facilitate more complex queries. The update aims to enhance the overall user experience and provide a more comprehensive platform for users to interact with ChatGPT. This development is significant as it expands the capabilities of ChatGPT, potentially increasing its accessibility and usability for a wider range of users.