Best AI Interview and Candidate Screening Tools (2026)

Greenhouse is best known as the structured-hiring ATS, but its standalone Voice AI product is the most complete AI interviewer in this list. Instead of asking candidates to record into a void, Voice AI runs a two-way voice interview on the candidate's schedule. It asks dynamic follow-up questions and answers candidate questions about the role, using only answers your team approved. Recruiters and hiring managers write the questions and the rubric, and can calibrate the scores the AI produces.

What sets it apart is auditability. Every interview returns a score, recording, transcript, per-question explanations, and flags for inconsistencies, AI-generated answers, and signs of outside help, timestamped in the transcript. Greenhouse states that Voice AI never scores accent, tone, pace, or confidence, runs monthly bias audits, and sits inside its ISO/IEC 42001 AI governance audit scope. It is available in 11 languages.

The ATS fit is also unusual: Voice AI integrates with 60+ ATS providers, including Ashby, iCIMS, Lever, Workday, and Teamtailor, so you don't have to run Greenhouse Recruiting to use it. If you do, you get structured interview kits, scorecards, an AI Notetaker for later rounds, and Talent Matching on the Core plan. See how teams connect other tools in our guide to Greenhouse hiring workflow integrations.

FastHire does one thing: it replaces your first-round phone screen with a 5 to 10 minute AI voice interview. You add the role, set the interview questions or accept AI-suggested ones, and share a link. Candidates take the interview immediately or pick a time, so there's no calendar back-and-forth and no screening-call no-shows. For each interview you get the audio recording, a transcript, and an AI score that tells you who to listen to first.

The pricing model is what makes it the best fit for small teams. There's no subscription: 1 credit equals 1 AI interview, credits never expire, and packs run $49 for 15 interviews, $399 for 150, and $2,499 for 1,000. A founder hiring two people this quarter can screen every applicant for less than the cost of one job board post. You can try it free without a credit card.

FastHire isn't a plug-in to an existing ATS. It bundles its own job board, an applied-to-offer pipeline, source tracking, and a post-offer readiness check where new hires rate their joining confidence and surface competing offers. That makes it a lightweight all-in-one for teams without an ATS, but teams on Greenhouse or Lever should expect to move shortlisted candidates across manually.

Hireflix is the one-way video option in this list, and its pricing is the main reason to pick it. Every plan includes unlimited user seats, unlimited positions, and unlimited interview responses: $75 per month for companies under 50 employees and $150 per month for 50 to 250, billed yearly, with a one-month free trial. If you screen a lot of candidates, that flat price beats any per-interview model.

You build an interview with video or text questions, set thinking time, answer time, and retakes per question, and send invites individually, in bulk by CSV, or through a shareable link candidates can apply through. Hireflix sends email, SMS, and WhatsApp invitations and reminders automatically, and candidates don't need an app, login, or account. Every response is transcribed automatically, and your team reviews, rates, and shares candidates together.

The trade-off against AI voice tools is that humans still do the evaluating, so someone has to watch the videos. The upside is fit with your ATS: Hireflix integrates natively with Greenhouse, Lever, Workable, Ashby, BambooHR, Teamtailor, Recruitee, JazzHR, and SmartRecruiters, plus Zapier, Make, and a GraphQL API with webhooks.

For engineering roles, a voice interview can't tell you whether someone can write working code. Codility screens with work samples instead. Its Screen product sends asynchronous, role-specific coding assessments that run real code and score automatically, and its Interview product standardizes live technical rounds with collaborative coding and task templates. The task library spans coding, SQL, multiple-choice, system design, and AI-skill tasks.

Codility has adapted to candidates using AI rather than pretending they don't. Plans include an agentic AI copilot with reviewable activity per assessment, so you can see how a candidate works with AI, not only whether the final answer passes. Plagiarism detection, integrity signals, proctoring with candidate snapshots, and task leakage protection (leaked tasks are pulled from the library) keep high-volume screens trustworthy. Scale customers can build custom tasks from their own codebase through an MCP integration.

Pricing is self-serve at the low end: Starter costs $1,200 per year for up to 120 invite credits and one platform user, and Scale costs $6,000 per year for up to 300 credits and three users. ATS integrations and SSO, which most in-house teams need to push scores into Greenhouse, Lever, or Workday, sit on the Custom plan. Agencies sourcing engineers should also see our recruiting tools for technical talent.

Workable is the pick if you want screening built into the ATS instead of bolted on. It's a full applicant tracking system with a candidate sourcing suite, AI-generated job descriptions and interview kits, automated candidate screening and ranking, and a newly released AI recruiting agent (Workable Agent) with 3,000 free AI credits on paid plans. Screening, scoring, and scheduling all live in the same pipeline your hiring managers already use.

The catch is how the interview layer is priced. Standard starts at $299 per month for the smallest company-size band, and video interviews (+$109/month) and assessments (+$59/month) are add-ons. Premier, at $599 per month, includes video interviews, assessments, texting, and referrals. Workable also bundles HR features like onboarding, time off, and e-signatures if you want recruiting and HR in one place.

Workable is also a common hub for other tools in this list. Hireflix and Geektastic both integrate with it natively, so you can start with Workable's built-in screening and add a specialist tool later for one role family. If you're comparing it with other AI-first systems, see our best AI ATS for recruiters guide.

Geektastic takes the opposite approach to fully automated screening: real engineers review the code. Candidates complete take-home challenges in their own IDE, and Geektastic's reviewer community (or your own team) scores them on code quality, solution design, problem-solving, and test coverage. Reviews are anonymous, which reduces bias, and Geektastic aims to return them within 24 hours.

For earlier filtering there are Express Challenges, multiple-choice code assessments with instant results. The first 50 candidates per month are free, then £2 per candidate, which makes Express a low-risk way to cut an applicant pile before anyone writes a take-home. Take-home challenges cost a £250 monthly platform fee, charged only in months you use them, plus £75 per expert review. There's no annual commitment.

ATS fit is an add-on: for £100 per month you can invite directly from your ATS and see results on the candidate record. It integrates with Greenhouse, Lever, and Workable. Geektastic was acquired by Deazy in 2024, so check the roadmap before you build your engineering hiring process around it.

HiredAI works at the top of the funnel. Instead of screening the people who applied, it matches roles to candidates and handles the work around them. HiredGPT searches what HiredAI says is 850M+ candidate profiles with plain-English queries like "senior React engineer in Austin with fintech experience" and returns ranked matches. Its Cortex engine then automates outreach, follow-ups, screening, and interview scheduling, so pre-qualified candidates land on your calendar.

It includes its own ATS with hiring manager review, a branded job board, and mobile apps for recruiters and job seekers. Pricing is the lowest entry point in this list: a free plan with one job post per month, then $19.99, $39, and $95 per month for single-user plans that scale job posts, email campaigns, and HiredGPT contact unlocks. Team and agency plans are also available.

HiredAI is the right choice when your problem is finding enough qualified people, not filtering too many. It doesn't run AI voice interviews or coding challenges, so teams drowning in inbound applicants will still want one of the tools above. Pair it with our guide to AI candidate matching recruitment tools if matching is your main need.