This sounded a strange abstract way to define it, but you're right, in as much as Open AI and MS deciding this between them. I don't think they mean it in a general sense though, it's framed to me as a way of deciding if OAI have been successful enough or not to MS on their investment.
https://techcrunch.com/2024/12/26/microsoft-and-openai-have-...
> Microsoft and OpenAI have a very specific, internal definition of artificial general intelligence (AGI) based on the startup’s profits, according to a new report from The Information. And by this definition, OpenAI is many years away from reaching it.
