A classifier runs after the probes to determine whether the system should fall back.

“right where like we need to do this fast on every request to claude and to fable and this has an overhead right um and we need to then like uh you know fall back and we we like do a classifier after the probes like we've talked about this in the in the paper but the nice thing about probes is that they're refinable like live right so we can get this feedback and then we can adjust it and things like that because the alternative is to program this is to train”