Are you still looking at code and agent traces to know if this is true or not?
At work, we still see hallucinations across all model families as we share bot claims for each others code
Non-deterministic software can behave orders of magnitude different based on how input is structured.
This factor is largely missed by bringing a deterministic mindset to trying AI.
This means the same problem solution can work for one person reliably, and not another and both are true.
Assertions that begin with a deterministic assessment using a snapshot in time of both the user and models capabilities are a new feature of this new category of software that will have to be better caught and expressed.