Feels a bit rushed. They haven’t even updated their API playground yet, if I select 5.2-chat-latest, I get:
Unsupported parameter: 'top_p' is not supported with this model.
Also, without access to the Internet, it does not seem to know things up to August 2025. A simple test is to ask it about .NET 10 which was already in preview at that time and had lots of public content about its new features.
The model just guessed and waved its hand about, like a student that hadn’t read the assigned book.