Last Tuesday, a recruiter posted in a Slack community I’m part of. She’d received 247 applications for a single customer support role. By Friday morning, she’d spoken to twelve of them. The rest? Still sitting there. Unread. Slowly going stale.

This is the math that breaks people. And it’s why AI screening tools have exploded in the past two years.

A Note Before We Start

We make one of the tools on this list. So yes, I’m biased. I’m not going to pretend otherwise.

You might disagree. You might look at the comparison below and decide HireVue or Paradox or Sapia fits your needs better. That’s fine.

The goal of this post is to help you understand what’s actually out there, how the tools differ, and where each one makes sense.

I’ll be honest about where we think we win. I’ll also be honest about where we don’t.

The Buried Inbox Problem

The job market has flipped. Candidates use AI to polish resumes and fire off applications at machine speed. Meanwhile, recruiters are still doing what they did ten years ago: reading CVs, dialing numbers, leaving voicemails nobody returns.

Something has to give.

The old funnel assumed scarcity. Maybe you’d get fifty applications, call twenty, interview five. You could brute-force it. But 200+? You physically can’t call everyone. So you guess. You skim. You develop “gut feelings” that are really just shortcuts dressed up in confidence.

AI screening tools sit at the top of your funnel and sort wheat from chaff before you pick up the phone. But these tools aren’t all doing the same job. Some take notes while you interview. Some send candidates a text quiz. Some ask people to record themselves on video. And some conduct live conversations.

The differences matter more than the marketing suggests.

The 10 Tools

Here’s what each one actually does, based on their public documentation and what recruiters report.

1. RoundOne AI (That’s Us)

What it does: Conducts real-time voice conversations with every candidate. The AI asks screening questions, listens to responses, and asks follow-ups based on what the candidate says. You get a ranked shortlist with summaries and scores.

Format: Live voice interview (not async, not pre-recorded)

Best for: Roles where phone presence matters — customer support, sales, account management, reception. High-volume screening where you’d normally spend hours making calls.

Pricing: £69/month (annual). Unlimited screenings, unlimited candidates. No per-candidate fees.

Integrations: Fountain, SmartRecruiters, Zoho Recruit, Darwinbox. Two-click setup.

What we think we do well: Candidates talk naturally instead of performing for a camera. You get signal on how someone thinks on their feet, not just rehearsed answers. Setup takes minutes. Pricing is flat and predictable.

Where we’re limited: We don’t do skills testing or assessments. We’re not a full ATS. If you need coding challenges or personality quizzes, you’ll need another tool alongside us.

2. Metaview

What it does: AI note-taker for interviews. Joins your calls, transcribes, summarizes, and auto-fills scorecards. It doesn’t screen candidates. It documents the screening you do yourself.

Format: Passive recording and summarization

Best for: Recruiters who want to be present in conversations instead of scribbling notes. Teams that need structured feedback for hiring managers.

Pricing: Not publicly listed. Free tier available, paid plans scale with team size.

Integrations: Most major ATS platforms, calendar tools, video conferencing.

How it compares to RoundOne: Metaview solves a different problem. It makes your existing interviews more efficient. We replace the first interview entirely. If your bottleneck is documentation, Metaview helps. If your bottleneck is volume, it doesn’t.

3. HireVue

What it does: Candidates record video responses to preset questions. AI analyzes voice, word choice, and content to generate scores. Also offers game-based assessments and live video interviewing.

Format: Async video (one-way recording) + assessments

Best for: Enterprise companies with dedicated TA teams. Campus recruiting at scale. Roles where you want structured, comparable responses across hundreds of candidates.

Pricing: Starts around $35,000/year for mid-size companies. Enterprise packages from $75,000+. No free trial.

Integrations: Major ATS platforms, calendar sync, SSO.

How it compares to RoundOne: HireVue is async. Candidates record on their own time, you review later. That eliminates scheduling but creates a performance dynamic — candidates know they’re on camera, often rehearse, sometimes freeze. Our live format is messier but closer to a real conversation. HireVue is also significantly more expensive and built for enterprise scale. If you’re a mid-market company or startup, the math probably doesn’t work.

4. TestGorilla

What it does: Pre-employment skills testing. 400+ assessments covering cognitive ability, software skills, language proficiency, personality, and role-specific knowledge. Also has one-way video interviews and AI resume scoring.

Format: Skills tests + optional async video

Best for: Roles where you can actually measure the skill with a quiz. Technical positions, accounting, data entry, language-dependent roles.

Pricing: Starts free with limited features. Paid plans from ~$75/month. Per-assessment pricing available.

Integrations: Greenhouse, SmartRecruiters, Lever, Workable, and others via Zapier.

How it compares to RoundOne: TestGorilla tests skills. We test conversation. They’re complementary, not competitive. If you’re hiring a developer, TestGorilla can verify they know Python. We can verify they communicate clearly. The best hires often require both. We don’t offer skills assessments. They don’t offer live interviews.

5. Willo

What it does: Async video interviews. Candidates click a link, record responses to your questions, submit when ready. You review recordings on your schedule.

Format: Async video (one-way recording)

Best for: High-volume hiring where you want to see and hear candidates but can’t schedule live calls with everyone. Companies prioritizing candidate flexibility.

Pricing: Starts at ~$75/month. Transparent pricing tiers.

Integrations: Greenhouse, Lever, Workable, Workday, SAP, and 5,000+ via Zapier.

How it compares to RoundOne: Willo is async video, we’re live voice. Both save scheduling time, but differently. With Willo, candidates record whenever convenient and you watch later. With us, the AI has the conversation in real-time. The candidate experience differs too — some people prefer the control of recording and re-recording. Others find cameras stressful and prefer just talking. Willo’s video format gives you visual cues we don’t capture. Our format gives you conversational dynamics they don’t capture.

6. Paradox (Olivia)

What it does: Conversational AI chatbot. Candidates text with “Olivia” who asks screening questions, answers FAQs, schedules interviews, sends reminders, and handles onboarding paperwork. Can automate 90%+ of the hiring process for hourly roles.

Format: Text-based chat (SMS, WhatsApp, web)

Best for: High-volume hourly hiring. Retail, restaurants, hospitality, warehouses. Companies hiring thousands of frontline workers across many locations.

Pricing: Starts around $1,000/month. Enterprise pricing varies significantly.

Integrations: Workday, SAP SuccessFactors, most major ATS and HCM platforms.

How it compares to RoundOne: Paradox is text. We’re voice. Text is fast, low-friction, and works 24/7. But typing isn’t talking. You miss tone, pace, how someone handles unexpected questions. For hourly roles where speed matters most, Paradox is excellent. For roles where phone presence matters (sales, support, client-facing), voice screening gives you signal text doesn’t capture. Paradox also does more than screening — scheduling, onboarding, FAQs. We focus only on the screening conversation.

7. Hireflix

What it does: One-way video interviews. Clean, simple, focused. Candidates record responses. You review. No AI scoring, no assessments. Just video collection done well.

Format: Async video (one-way recording)

Best for: Teams that want straightforward async video without enterprise complexity. Budget-conscious hiring.

Pricing: Starts at $75/month. All features included at every tier. 30-day free trial.

Integrations: Lever, BambooHR, Greenhouse, Workable, SmartRecruiters, and others.

How it compares to RoundOne: Hireflix is the lean async video option. We’re the live voice option. Similar price points, very different approaches. Hireflix gives you video recordings to review. We give you AI-conducted conversations with scores and summaries. If you want to see candidates on camera and make the judgment yourself, Hireflix. If you want AI to handle the conversation and surface the best candidates, us.

8. Talview

What it does: Video interviews (live and async) plus proctored assessments. Heavy focus on fraud detection, cheating prevention, and secure testing. Recently launched AI “agents” for interviewing and proctoring.

Format: Async video, live video, proctored assessments

Best for: Technical hiring, certification programs, campus recruiting. Organizations concerned about candidate fraud or proxy interviews.

Pricing: Custom pricing. Not publicly listed.

Integrations: Major ATS platforms, LMS systems.

How it compares to RoundOne: Talview is broader and more complex. They cover video interviews, live interviews, assessments, and proctoring. We do one thing: real-time voice screening. If you need a full assessment platform with fraud detection, Talview offers more. If you need fast, simple voice screening, we’re lighter weight. Their technical focus and proctoring features make sense for IT hiring and certifications. Less necessary for general hiring.

9. Sapia.a

What it does: Text-based chat interviews. Candidates answer five questions via chat. AI analyzes language to build personality and competency profiles. Returns a ranked shortlist with detailed insights.

Format: Text-based chat interview

Best for: High-volume hiring where reducing bias is a priority. Companies that want to screen without video (more inclusive for some candidates). Retail, hospitality, customer service at scale.

Pricing: Custom pricing. Enterprise-focused.

Integrations: Workday, SmartRecruiters, SAP SuccessFactors, Lever, PageUp.

How it compares to RoundOne: Both of us screen candidates automatically and deliver ranked shortlists. The difference is format: they use text, we use voice. Sapia argues text reduces anxiety and bias — no camera, no judgment based on appearance. We’d argue voice captures signals text misses — tone, confidence, how someone handles follow-up questions. Their 9/10 candidate satisfaction is impressive. Our 90% satisfaction suggests voice doesn’t hurt candidate experience the way some assume. Choose based on whether text or voice better matches the role you’re hiring for.

10. Interviewer.AI

What it does: Async video interviews with AI scoring. Candidates record responses. AI evaluates communication skills, psychological factors, and job-relevant content. Provides explainability on why candidates scored the way they did.

Format: Async video with AI analysis

Best for: Companies that want AI-assisted evaluation of video responses, not just collection. Roles where you want structured, comparable scores across candidates.

Pricing: Free tier available. Paid plans vary.

Integrations: Various ATS platforms.

How it compares to RoundOne: Both of us use AI to evaluate candidates, not just collect responses. The difference: they analyze recorded videos, we conduct live conversations. Their “explainable AI” approach is thoughtful — you can see why someone scored high or low. We provide summaries and scores but the reasoning is in the conversation itself. Async video gives candidates control over their recording. Live voice tests how they respond in the moment.

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The Comparison That Matters

Here’s how these tools stack up on the factors senior recruiters typically evaluate:

The Real Question

The category is crowded. Every tool claims to save time and improve quality. So how do you choose?

Start with your bottleneck.

If scheduling is the problem — you’re drowning in calendar coordination, not application volume — Paradox or async video tools eliminate the back-and-forth.

If documentation is the problem — interviewers forget details, feedback is inconsistent, hiring managers don’t trust the notes — Metaview captures everything.

If skills verification is the problem — you need to know candidates can actually do the job before talking to them — TestGorilla.

If sheer volume is the problem — too many applications, not enough hours to call everyone — you need something that screens, not just collects. That’s us, Paradox, Sapia, HireVue, or Interviewer.AI.

Within that screening category, the format question matters most:

Text chat (Paradox, Sapia) is fast and low-friction. Great for hourly hiring. Less signal on verbal communication.

Async video (HireVue, Interviewer.AI) gives you recordings to review. Candidates can prepare and re-record. You’re watching performances, not conversations.

Live voice (RoundOne) captures how people actually talk — with follow-ups, pauses, thinking out loud. Messier. Closer to reality.

We built RoundOne because we think the phone screen is where recruiters lose the most time. Not watching videos. Not reading chat logs. Actually dialing, waiting, leaving voicemails, rescheduling, repeating the same questions two hundred times.

If your first instinct after seeing an application is “I need to talk to this person,” a tool that talks first saves you hours without sacrificing signal.

Where to Start

If you’ve read this far, you probably have a real problem with screening volume. Here’s how I’d think about next steps.

Pick one tool and run a pilot. Don’t try to overhaul everything at once. Most platforms offer free trials or low-commitment starts. Including us — 14 days free, no credit card.

Match the tool to your bottleneck. If it’s hourly hiring at massive scale, Paradox. If it’s skills verification, TestGorilla. If it’s phone screens eating your week, give us a look.

Watch candidate completion rates. A tool that screens fast but scares off good applicants isn’t solving your problem. It’s creating a different one.

And stay skeptical of anyone — including us — who claims to have the silver bullet. AI screening is a lever, not a replacement. It clears space for you to do the work that actually requires a human.

The goal isn’t to automate hiring. It’s to automate the part that was never a good use of your time anyway.

See a Real-Time AI Screening in Action — Book a Demo