The next landmark version of OpenAI's ChatGPT could use GPT-5, but don't start assuming this will have any semblance of "AGI."

GPT-5’s debut will be preceded by the release of a less capable large language model, GPT-4.5, in the coming weeks. The latter algorithm is the successor to the company’s general-purpose GPT-4o model. GPT-4o is less adept at tasks such as generating code than OpenAI’s reasoning-optimized LLMs, but it offers significantly lower inference costs.

ChatGPT has surpassed 400 million weekly active users. "We feel very fortunate to serve 5 percent of the world every week," OpenAI COO Brad Lightcap said on X about the new audience stat. This figure is twice the weekly active user count reported by the company in August 2024,

The profusion and popularity of free, open-source models has raised questions about how AI companies can actually profit from their products.

ChatGPT saw 400 million weekly active users as of February, OpenAI chief operating officer Brad Lightcap told CNBC. Of all users, 2 million pay for enterprise accounts, which Lightcap attributed to consumer customers suggesting ChatGPT to their companies.