The most expensive part of recruitment is not the search — it is the screening. Every candidate requires a human conversation to determine whether they are worth advancing. At scale, this creates an impossible arithmetic: a recruiter can hold perhaps 8–10 meaningful screening calls per day. Against a pipeline of hundreds of candidates, the math does not work.
AI voice interviews change the denominator.
The Old Model
A recruiter identifies 50 promising candidates. They spend three weeks booking and holding screening calls, navigating calendar delays and no-shows. By the time shortlisting is complete, the best candidates have already accepted offers elsewhere. Urgency is the enemy of quality.
What Changes With AI Screening
Arc's voice interview system can run concurrently across your entire candidate pool. A 20-minute structured interview, conducted by an AI agent, produces a full transcript and a 6D Evaluation score within minutes of completion. The recruiter reviews outcomes, not calls.
The time investment shifts from conducting the screening to designing it — defining the questions, calibrating the scoring criteria, and reviewing the evaluation output. This is higher-leverage work.
The 6D Framework
The six evaluation dimensions — technical capability, communication, cultural alignment, leadership potential, adaptability, and role fit — were chosen because they predict placement durability, not just initial hire rate. A candidate who scores well on role fit but poorly on adaptability is a short-tenure risk. The framework surfaces this before the human interview stage.
What AI Screening Cannot Replace
The AI voice interview is a filter, not a decision. It identifies candidates worth a human conversation — it does not replace that conversation. Candidates who reach the Interviewing stage in Arc have passed an initial quality bar; the recruiter's job is then to validate, deepen, and assess fit on dimensions that require human judgement.
Used correctly, the economics are compelling: the cost per interview drops significantly, screening throughput increases by an order of magnitude, and recruiters spend their time on the conversations that actually matter.