Architects or Tenants: Modern AI Stacks Are Being Built on Rented Foundations
You're building on infrastructure you don't control, can't audit, and can't see degrading in real time. The Invisible Dependency For engineers, the inference vendor problem starts with a deceptively simple question: what happens when the model changes and you don't know about it? Most engineering teams treat their inference provider like a stable API. It isn't. Model versions rotate. Performance characteristics drift. Context window handling changes. Output formats shift in subtle ways that
