Process Reward Agents — When Reasoning Learns to Judge Itself (Before It’s Too Late)
Reasoning systems have a familiar failure mode: they can sound calm while quietly walking off a cliff. A model begins with a plausible assumption, adds a second plausible sentence, then a third. By the time the final answer arrives, the mistake is no longer obvious because it has been wrapped in a competent-looking explanation. In low-stakes writing, this is annoying. In medicine, finance, compliance, or legal reasoning, it is a process failure masquerading as intelligence. ...