This is timely, as I have just landed in Brazil after attending the OpenAI DevDay conference. One of the new features revealed there is basically what we created as personas built-in into their APIs itself, which they called “Assistants”.
The verdict is still in the air if we will migrate some of the AI Bot into this new API, but if we do it will make a lot easier to create new custom personas, since you only would need to provide a name and the assistant ID.