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ChatGPT now defaults to GPT-5 automatically selecting the model for each task, which may help beginners but feel less transparent to advanced users. A setting is still available to enable access to older "legacy" models such as o3 and GPT-4o. When turned on, these can be manually chosen from the "Other models" menu. This manual option applies only to past models. The GPT-5 "Thinking" and "Pro" versions can also be selected manually, but only by Pro subscribers.

OpenAI is offering ChatGPT Enterprise to U.S. government agencies for just one dollar per year. This special version comes with enhanced security and privacy features, but does not include access to the OpenAI API. The deal follows OpenAI, Google, and Anthropic joining a new GSA marketplace for AI software, which acts as a central purchasing platform for federal agencies. According to GSA Commissioner Josh Gruenbaum, the token price is intended as a trial with no long-term commitment. Data from government employees will not be used to train OpenAI's models. So far, about 90,000 federal employees are using ChatGPT.

ChatGPT is set to reach 700 million weekly users this week, according to Nick Turley, App Product Manager at OpenAI. That's up from 500 million at the end of March and four times higher than last year. In addition, OpenAI now counts 5 million paying business users, up from 3 million in June, as more enterprises and educators turn to AI tools. The company recently raised $8.3 million in funding and is preparing to launch GPT-5.