Compare/Head to head

Tenzo AI vs Underheard

Same facts, side by side: starting price, free tier, MCP, API and what each one is actually built for.

Starting price

Tenzo AI

Sales-quoted

Voice AI screens over phone, SMS, and WhatsApp on top of your ATS. Pricing is sales-quoted.

Where Tenzo AI fits

  • High-volume TA that wants every applicant screened
  • Healthcare, hourly, and always-on hiring
  • Workday, Bullhorn, iCIMS, or Greenhouse customers
  • Teams that will use WhatsApp and SMS, not only email

Underheard

Sales-quoted

Underheard is a Swiss AI voice agent for staffing agencies: it phones candidates the moment they apply, screens them, confirms availability and shift cover, and writes scores, notes and transcripts back into your ATS. It connects to staffing systems such as Bullhorn, Avionté and TempWorks. Pricing is by quote after a demo.

Where Underheard fits

  • Temp and light industrial staffing agencies
  • Agencies on Bullhorn, Avionté, TempWorks, Aqore or Crelate
  • Teams losing applicants to slow callbacks
  • European agencies that need EU data residency

At a glance

DetailTenzo AIUnderheard
Starting priceSales-quotedSales-quoted
Free tier–No–No
MCP server–No–No
Public API✓Yes–No
Listed underInterviewing, AI interviewing, TextingAI interviewing, Interviewing, AI screening

Where they pull apart

Tenzo AI

Stands out: Morgan, a screening agent that hits every applicant by phone/SMS/WhatsApp and writes a scored shortlist back, with 57-plus ATS names including Bullhorn, Workday, iCIMS, SAP SuccessFactors, and Greenhouse.

Watch out: Quote-only enterprise motion. A two-recruiter shop will be over-served.

Not the right fit for

  • SMBs that need a public seat price
  • Executive search
  • Teams that refuse AI voice screens

Underheard

Stands out: It covers the whole temp worker loop, not just the first screen: instant calls to new applicants, AI matching and SMS outreach when a job order lands, check-ins and compliance reminders on assignment, and an AI receptionist for call-offs, timesheet and payroll questions that hands off to a recruiter. Conversation data is stored in the EU, and calls run in English, German, French, Spanish, Italian, Portuguese and Turkish.

Watch out: Underheard was founded in 2026 and its published customer list is short, so ask for staffing references. No price is published, so budget from a demo quote. The company also sells AI market research interviews, so staffing is one of two product lines.

Not the right fit for

  • Corporate teams hiring a few salaried roles
  • Buyers who want a published self-serve price
  • Executive search firms

Pros and cons

Tenzo AI

  • Phone plus SMS plus WhatsApp, not video-only
  • Long ATS list including Bullhorn, Workday, and Greenhouse
  • Scores every applicant, not a sample
  • Quote-only
  • No public per-seat price
  • Overkill for low-volume professional hiring

Underheard

  • Calls every applicant as soon as they apply
  • Covers screening, shift fill and retention in one
  • Writes structured data into staffing ATSs
  • No published pricing
  • Founded in 2026, short track record
  • Staffing is one of two product lines

What each one costs

Tenzo AI

Sales-quoted

Sales-quoted. Tenzo AI's pricing page asks for your hiring volume and the roles you screen for, then returns a tailored quote; no rate is published. Confirm current terms on the vendor site.

Checked 4 Nov 2026

Underheard

Sales-quoted

Underheard does not publish a price for its staffing product. Plans are scoped on a demo call with the founders, and the vendor site points new agencies to a free try of the voice agent from its Hub. Confirm current terms on the vendor site.

Checked 9 Nov 2026

Common questions

Can you try Tenzo AI or Underheard for free?
Neither carries a free tier on our listing.

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Editorial listings, never paid rankings. Prices checked 4 Nov 2026. Confirm current terms on the vendor site. Spot an error?