AI PM roles at Anthropic and OpenAI pay north of $1M/year in total comp. A senior PM at a typical Series C SaaS company makes roughly $280K. Same title. $720K annual gap. The two hiring processes separating those pools are wildly different from each other, and both are different from what most candidates prep for. OpenAI runs a loop closer to Meta's: AI product sense cases, product metrics rounds, behavioral, and culture fit. A real question from their loop: "How would you increase weekly…