For decades, corporate hiring has favored candidates who could present a flawless résumé and deliver highly structured answers to interview questions. Today, generative AI is making it easier for applicants to do those things, whether they have the underlying competence or not. Put another way, the ability to perform well in interviews is becoming infinitely scalable and practically free. For anyone involved in recruiting, that’s a problem.

While the flood of AI-generated résumés is already a well-known headache for recruiters, a much more dangerous shift is happening further down the funnel. The conversational interview, long considered the ultimate, unhackable test of a candidate’s authenticity, is being actively compromised in real time.

To understand the scope of this problem, we conducted an operational study over the past year. (To be clear, we’re not academics; we’re technologists who’ve been doing this research to help us develop an idea for a startup.) Starting in July 2025, we spent five months holding structured conversations with 120 talent-acquisition leaders representing 87 unique companies. These people worked at staffing firms, Series A through D startups, and in enterprise tech. We asked each leader about their biggest recruiting challenges, how their sourcing methods were evolving, and the specific ways they had seen candidates attempt to cheat at various steps in the process. Alongside these qualitative interviews, we analyzed 6,380 recorded first-round screening sessions.

What we uncovered is a systemic vulnerability that most companies have not yet recognized: The early hiring funnel is now breaking on both ends simultaneously. At the top, documents such as resumes and cover letters have lost their signal value because AI has made it so easy to optimize them. At the bottom, live video interviews are now easily gamed by real-time assistance tools.

For the C-suite, this is no longer just an HR headache, it is a critical strategic risk. When the earliest filters in your hiring process stop working, your organization begins to systematically select for candidates who are best at performing the hiring process, rather than those best equipped to do the job. Left unchecked, this degrades a company’s overall talent density and compounds the cost of bad hires at scale.

The True Cost of a Broken Hiring Funnel

Gartner anticipates that by 2028, one in four candidate profiles will be partially or entirely fake. Google, McKinsey, and other companies have responded by reintroducing in-person interviews for some candidates, a meaningful step backward in efficiency (due to travel time and costs) that signals how seriously they are treating this problem.

Why are they doing this? Because making a bad hire is terribly expensive. SHRM’s 2025 Benchmarking Report puts the average cost-per-hire for non-executive roles at $5,475 and executive roles at nearly $36,000. Gallup conservatively estimates that replacing an employee runs from one and a half to two times annual salary. For a company hiring 200 people a year, even a small increase in screening errors can create substantial direct recruiting costs before turnover, ramp time, and lost productivity are included.

The harder cost to see is larger: When a meaningful share of candidates are evaluated on something other than their actual ability, leaders cannot be sure how many recent hires they got right at all. That uncertainty directly threatens capability building.

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