how can a dangerous entity in captivity use bribes to attain freedom?
which seems like a common enough trope between humans that any transhuman AI, having read all of recorded literature, and having accessed all of that person's conversations, would have enough data points to pattern match to the right bribe methodology.
Threats aren't possible in the scenario. Unless you refer to threatening not to give valuable information (cure for cancer) - but we're calling that a bribe here.
