Full Stack vs Bolt-On: The Hidden 40x Cost Trap in AI Hiring

When HR teams evaluate AI hiring tools in 2026, most focus on features. But the decision that actually determines your total cost, compliance exposure, and day-to-day recruiter experience isn't about features at all — it's about architecture. Are you buying a full-stack AI ATS, or bolting a point solution onto the platform you already have? This episode breaks down the real math behind OVI, Paradox Olivia, and HireVue — and reveals why two teams doing identical hiring work could pay anywhere from $1,200 to $75,000 a year for essentially the same outcome. The difference comes down to one critical question: does the tool you're buying require another ATS underneath it? We also cover the 2026 compliance landscape, including the EU AI Act's emotion recognition ban and updated Illinois video interview regulations — and why architectural choices made years ago are now creating legal exposure for some platforms while leaving others completely outside the scope of new rules.