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AI recruiter vs. AI recruiting agent: what each one does, and which one a staffing agency needs

“AI recruiter” names three different tools: the ones that find profiles, the ones that score résumés or interviews, and the ones that talk to candidates. What each one does, which one fits an agency hiring hourly workers at volume, what the law won’t let any of them do, and what it costs.

By the FILTRA team, Monterrey, Mexico · · 8 min read

Search for “AI recruiter” and you get tools that have little in common: a platform that finds profiles on LinkedIn, another that scores résumés, another that runs recorded video interviews, and an assistant that answers WhatsApp. All of them call themselves an AI recruiter. For an agency filling hourly roles, only one of them solves the daily problem, and it is worth knowing which before you book a demo.

The three things sold as an “AI recruiter”

  1. Tools that source. They search databases and professional networks, build a list of profiles that match the role and draft the outreach. They help when the problem is a lack of candidates: a quality engineer, a plant manager. For a warehouse associate you don’t need them: one job ad brings more people than the agency can answer.
  2. Tools that score. They read résumés or recorded interviews and rank them. They help when hundreds of résumés arrive for an office role. In hourly hiring, almost nobody sends a résumé: they send “info?” on WhatsApp.
  3. Tools that talk. An agent that answers every candidate on the channel they use, with the job’s real information, asks what the job requires and books the interview. It is the only one of the three that works where a high-volume agency loses people: in the messages nobody answered in time.

They don’t compete with each other, and a large agency may use all three. But if your problem is candidates writing in and waiting hours for an answer, the first two won’t fix it.

What an AI recruiting agent does

An agent is not a button menu or a greeting message. For a staffing agency hiring hourly workers, it has five jobs:

  • Answer in seconds, at any hour, with what the agency entered about the job: pay, shift, location, benefits, transportation.
  • Screen in the conversation: ask what the job requires, in whatever order feels natural, and decide whether the person moves on.
  • Book the interview in the slots the agency opened, and send a reminder the day before.
  • Hand the chat to a person when the candidate asks or something isn’t in the job post, with everything already said.
  • Log what it didn’t know so the agency answers it once and the agent knows it for the next person.

The WhatsApp recruiting chatbot guide goes into each one, with the real mistakes we had to fix.

What no AI recruiter should do

Whatever the type, three limits don’t depend on the vendor:

  • Screen on protected traits. Age beyond the legal minimum, national origin, religion, disability, pregnancy, marital status: screening questions have to be about the job. If a job post says “young and energetic”, the agent must not turn it into a question, and a good one flags it when the job is loaded.
  • Make the hiring decision alone. It screens against requirements the agency set; people decide who is hired. Some places add rules: New York City’s Local Law 144 requires a yearly bias audit and notice to candidates before using an automated tool that substantially assists hiring decisions there.
  • Use the data for something else. What candidates share is for the hiring process. Writing again about a similar job is fine if they want it; blasting promotions to the whole database is not, and it is the fastest way to get a WhatsApp number restricted.

What it costs

Sourcing and scoring tools usually charge per seat or per job, often on annual contracts. An agent that talks costs mainly per person served, because every message goes through a language model: in our operation, a full candidate, from “info?” to a booked interview, costs less than a dollar in model usage. On top of that come the WhatsApp messages Meta charges, a few cents per candidate (the WhatsApp Business API pricing guide has the rates).

That is why a per-seat price for something that talks deserves a second look: if the agency serves twice as many candidates, the real cost doubles with the same seats. FILTRA’s prices are published, per person served, with unlimited jobs.

How to choose in ten minutes

  1. Find your bottleneck. Not enough candidates: a sourcing tool. Too many résumés: a scoring tool. Too many unanswered messages: an agent that talks.
  2. Ask for a demo number and message it as a candidate at ten at night, with a question that isn’t in the job post. If it makes up the answer, move on.
  3. Ask what happens when it gets something wrong: how the agency finds out and who fixes it. “It doesn’t make mistakes” is not an answer.

Sources

Questions that always come up

What is an AI recruiting agent?

Software that talks to candidates on the agency’s behalf: it understands what they write in their own words, answers with the job’s real information, asks the questions the job requires and books the interview. Unlike a button chatbot, it doesn’t force candidates through menus, and unlike a sourcing tool, it doesn’t go looking for profiles: it serves the people who already wrote in.

Is an AI recruiter the same as an AI recruiting agent?

Not usually. “AI recruiter” is most often sold as a sourcing tool that finds and messages profiles for salaried roles. An AI recruiting agent handles the conversation with candidates who already applied, which is where hourly, high-volume hiring gets stuck.

Can AI make the hiring decision?

It shouldn’t. It can screen against requirements the agency defined (shift, experience, location) and rank who to see first, but people decide who gets hired. Some places regulate automated tools in hiring: New York City, for example, requires a bias audit and notice to candidates for tools that substantially assist hiring decisions.

Does it work for high-volume hiring?

That is where it matters most. When one job post brings dozens of messages in a day, the agent answers all of them at once and the recruiter only sees people who qualify and already have an interview. For an executive search with five candidates, a person should run the conversation.

How much does an AI recruiter cost?

It depends on the tool. Sourcing and scoring tools usually charge per seat or per job, often on annual contracts. An agent that talks to candidates costs mainly per person served, because every message goes through a language model: in our operation, a full candidate, from first message to booked interview, costs less than a dollar in model usage, plus the cents Meta charges for WhatsApp messages.

How FILTRA’s agent works for staffing agencies

The recruiting page walks through the whole flow as it is built: the agent that answers on WhatsApp, screens and books, and what the owner sees every morning.

See how it works for agencies
Try it with one of your jobs.
A 20-minute call. We give you a demo number so you can message it as a candidate before you decide anything.
We use your details only to get in touch. See our privacy notice (in Spanish, Mexican law).

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