Applying to Mercor
The Mercor AI interview
Monty, Mercor's AI interviewer, interviews you by video, about 20 minutes. Monty generates questions from the candidate's resume and the role. Most sessions are Domain Expert interviews: experience questions about real projects and cases, and expertise questions that probe the claims on the resume, with follow-ups where an answer leaves something to probe.
How it runs
- Most interviews take about 20 minutes on camera, in English unless the role says otherwise.
- Questions are built from your resume and the job description, and probe deepest where your resume makes claims.
- You can retake an interview up to three times across all applications, and a retake replaces your last attempt.
- It reads a long silence as the end of your answer: if you need time to think, say so out loud.
An AI-conducted video interview of about 20 minutes for most people (some are shorter or longer), in English unless otherwise specified. Latest Google Chrome is recommended, Microsoft Edge and Safari are supported, Firefox is not, and some interviews need a computer rather than a phone. Camera and microphone are required, with your full face visible; captions are on by default. Some interviews are technical and go deep into your past experience, others test language or reasoning; some require sharing your entire screen, and some include a whiteboard. A waiting room runs setup checks first (a working mic is required, plus screen sharing when the interview needs it). Mercor does not publish a fixed number of questions.
How to prepare
- Take the free practice interview first: it is not tied to any application, does not affect future opportunities, is not shared with companies, and you can take it as many times as you like
- Test your setup in the waiting room (Test mic, Play test sound), sit with your whole face in frame and good front lighting, and use headphones and an external microphone in a quiet room with stable internet
- Have pen and paper ready (and a calculator if relevant). Avoid long silences: if the AI interrupts during a pause, tell it you were not finished, and ask it to repeat or clarify a question when you need to
- Do not use ChatGPT or other LLMs to compose answers: Mercor allows grammar and wording checks only
- Protect your retakes: you get up to three per interview across all applications (the number can vary by interview), the waiting room asks you to reserve them for technical issues, and hiring managers can see your retake count, so make the first official attempt count
- Third-party coaching advice (AceRound, not Mercor): answer in 60 to 90 seconds in a STAR shape (situation, task, action, result), leading with the result or the decision, describe what you did rather than what 'we' did, and use concrete numbers
Why people fail it
- Ending the interview much earlier than its planned length: the attempt does not count (it shows 'Interview too short'), and redoing it uses one of your retakes
- Technical setup: an unsupported browser (Firefox, or a phone for an interview that needs a computer), blocked camera or microphone permissions, a failed required setup check that keeps 'Start interview' grayed out, or VPNs and extensions that obstruct the live AI
- Spending official retakes as practice instead of using the free practice interview, leaving none for a real technical problem
- Using an LLM to compose answers, which Mercor's LLM Usage Policy forbids
- Vague answers with no numbers, 'we' language that hides your own contribution, or long rambling answers (third-party coaching advice from AceRound, not Mercor's published criteria)
Mercor AI interview: questions
What does the Mercor AI interview ask?
Monty generates questions from the candidate's resume and the role. Most sessions are Domain Expert interviews: experience questions about real projects and cases, and expertise questions that probe the claims on the resume, with follow-ups where an answer leaves something to probe.
What is the Mercor assessment?
AI Video Interview (plus role-specific assessments). The core screen is an on-camera AI interview: Mercor's AI interviewer poses role-specific questions, generates a transcript of your responses and evaluates your performance for the listing. Mercor keeps the recordings and transcript of official interviews to evaluate your candidacy and recommend your profile to potential employers; practice interviews are not shared with companies. Each unique interview only needs to be completed once, and your result is kept for any other application that needs the same interview. The AI interview is Mercor's only screening method (no human or phone alternative).
How long is the Mercor AI interview?
About 20 minutes, by video.
How do I prepare for the Mercor interview?
Take the free practice interview first: it is not tied to any application, does not affect future opportunities, is not shared with companies, and you can take it as many times as you like Test your setup in the waiting room (Test mic, Play test sound), sit with your whole face in frame and good front lighting, and use headphones and an external microphone in a quiet room with stable internet Have pen and paper ready (and a calculator if relevant). Avoid long silences: if the AI interrupts during a pause, tell it you were not finished, and ask it to repeat or clarify a question when you need to
Why do people fail the Mercor interview?
Ending the interview much earlier than its planned length: the attempt does not count (it shows 'Interview too short'), and redoing it uses one of your retakes Technical setup: an unsupported browser (Firefox, or a phone for an interview that needs a computer), blocked camera or microphone permissions, a failed required setup check that keeps 'Start interview' grayed out, or VPNs and extensions that obstruct the live AI Spending official retakes as practice instead of using the free practice interview, leaving none for a real technical problem
Can I practise the Mercor AI interview?
Yes: our free practice asks questions in Mercor's format and gives feedback on each answer. It is not Mercor's own interview and is not shared with Mercor.
From our Mercor guide, researched 2026-11-08, and our AI interview guide. Some links on AITraining.jobs are referral links. If you sign up through one, AITraining.jobs may earn a commission at no extra cost to you. It never changes what a platform pays you.