Best AI mock interview tools compared
For practising tech interviews aloud, free peer practice on Aced (formerly Pramp) covers coding conversation, Yoodli gives strong delivery feedback at low cost, Final Round AI focuses on live interview assistance at a high price, and PrepRole combines a free guest Mock Session, five Interview Stages, and a hiring-style Scorecard while keeping your video in the browser. Choose by what you need to improve: delivery polish, coding conversation, or tailored rehearsal with feedback.
About 8 min read
The shortlist at a glance
Mock interview tools differ less in marketing than in what they actually practise. Before comparing feature lists, decide what you need to improve: answering aloud at all, delivery polish, coding conversation, tailored questions for a specific job, or feedback after a real interview. No tool covers all of these well.
Prices and features below were checked in November 2026 and change often. Verify each tool's current pricing page before deciding.
- PrepRole: voice-first mock interviews across five Interview Stages, a hiring-style Scorecard, a free guest session, a free account to keep Scorecards, and camera analysis that stays in your browser. Launch pricing is planned as session packs and a monthly plan.
- Aced Practice (formerly Pramp, then Exponent): free peer-to-peer mock interviews where two candidates interview each other in hour-long reciprocal sessions.
- Yoodli: AI roleplays focused on delivery metrics such as filler words, pacing, and structure. Free tier of 5 lifetime sessions; Pro about $8/month billed annually (as of October 2026).
- Final Round AI: live Interview CoPilot that assists during real interviews, plus practice interviews. Free plan is preparation only; paid plans from about $25/month billed annually to about $150/month billed monthly (as of October 2026).
- Google Interview Warmup: the previously popular free tool was retired in April 2026.
- Hello Interview: a large interview-prep content library with guided practice; Premium includes a small number of AI Live Practice mock interviews ($47 for one month or $89 for one year, as of November 2026).
- ChatGPT or Gemini voice mode: a zero-cost DIY option for improvised questions, without a structured session or scored feedback.
Free peer practice: Aced (Pramp)
Aced Practice, which absorbed Pramp in 2024, matches two candidates in a video session with a shared code editor. Each takes a turn as interviewer and interviewee, so one hour buys roughly thirty minutes of you answering questions. Sessions cover coding, system design, product, and behavioral tracks, and free users receive a monthly credit allowance.
Peer practice gives you a real human listener, which no AI reproduces, and interviewing others teaches you what a clear answer sounds like. The trade-offs are scheduling friction, variable partner quality, and feedback written by a fellow candidate rather than a structured rubric. For coding conversation it remains one of the best free options.
Delivery and communication metrics: Yoodli
Yoodli is an AI roleplay platform whose strengths are measurable delivery habits: filler words, pacing, word choice, eye contact, and an overall communication score. Interview preparation is one of several use cases alongside sales calls and public speaking, so its questions are generic rather than built from your resume and a job post.
Its free tier allows five lifetime roleplays. The Pro plan, about $8 per month billed annually at last check, includes up to ten roleplays per week, and the Advanced tier, about $20 per month billed annually, removes the cap and excludes your data from model training. If filler words and pacing are your weak point, Yoodli's feedback is unusually specific for the price.
Live interview assistance: Final Round AI
Final Round AI's core product is an Interview CoPilot that runs on your desktop during real interviews and suggests answers in real time. Its practice mode and free preparation plan exist mainly to feed that use case. Pricing starts around $25 per month on annual billing but $150 billed monthly, and the free plan does not include live sessions.
A note of caution that honest comparisons should not skip: several employers treat undisclosed AI assistance during a real interview as misrepresentation, and Final Round AI's own documentation says the tool is not a substitute for preparation. If you evaluate it, evaluate the practice features separately from the live-assist feature.
Content libraries with some practice: Hello Interview
Hello Interview is strongest as a study library: Premium articles, video walkthroughs, thousands of community-reported interview questions, and Guided Practice problems, mostly around system design and coding. Its Premium plans include a limited number of AI Live Practice interviews, one with a month of access, two with a year, ten with lifetime, priced at $47 for a month or $89 for a year at last check.
If your gap is knowledge, not rehearsal, a content library like this may be the better spend. The live AI interview is a bonus feature rather than the core product, so the rehearsal experience is thinner than a dedicated mock-interview tool, but the material itself is genuinely good.
Zero-cost DIY: ChatGPT and Gemini voice mode
A general voice assistant can already ask you interview questions aloud and react to your answers for free or near-free. Paste a job post and ask it to run a behavioral round, then ask for critique after each answer.
What you give up is structure: there is no session plan tied to a stage, no consistent scorecard to compare across attempts, no transcript archive, and question quality depends on your prompting. It is a reasonable way to practise speaking when budget is zero; it is less useful for tracking whether you are improving.
Tailored voice practice: PrepRole
PrepRole is built specifically for tech candidates: paste a job post and your resume, choose one of five Interview Stages (Recruiter Screen, Behavioral, Technical Deep-Dive, System Design, Hiring Manager), and rehearse aloud with an AI Interviewer. The session ends in a hiring-style Scorecard, and you can revise an answer and practise again. One guest Mock Session is free with no account, and a free account keeps your Scorecards, progress history, and Real Interview debriefs.
Two honest limitations are worth stating. First, an AI interviewer cannot reproduce a specific company's private process or a human interviewer's judgement, and AI feedback can be wrong. Second, the pricing page shows launch prices, but everything is currently free. Camera framing and Delivery Signals run on-device; only your voice leaves the browser.
- In the session: Coach Mode (spoken feedback after each answer) or Interview Mode (feedback held to the end), mid-answer interruption with real-time follow-ups, live captions and notes, English or German.
- For the stage: a LeetCode-style Code Pad in Technical Deep-Dive, a shared Whiteboard in System Design, interviewer personas with a toughness control, Known Questions and public Company Research feeding the plan.
- Before and after: preflight framing and lighting checks, opt-in Delivery Signals (beta) with per-answer gaze percentages, head steadiness, and a 1-5 speaking volume, a re-answer flow for revising one answer, and Recurring Gaps across Scorecards.
- Around the practice loop: a Story Bank and Openings for reusable material, transcript imports for Real Interview debriefs (Zoom, Teams, Meet, Otter, pasted text), Practice Links for hosts with aggregate-only results, and Practice aloud drills with on-device transcription.
How to choose
Match the tool to the gap. If you have never practised aloud, start anywhere free and get three sessions done. For coding conversation with a real person, Aced's free peer sessions are hard to beat. For measurable delivery habits, Yoodli is the focused pick. For study material more than rehearsal, Hello Interview's library is strong value. For improvised free practice, a voice assistant works if you bring your own questions.
For rehearsal tailored to a specific role, with questions derived from your resume and the job post and a Scorecard you can compare across sessions, that is the part PrepRole is built for. Most candidates preparing seriously will combine two tools rather than pick one winner, and no tool replaces a real interview's unpredictability.
Frequently asked questions
Which AI mock interview tool is best for tech candidates?
It depends on the gap: Aced (formerly Pramp) for free peer coding practice, Yoodli for delivery metrics like filler words and pacing, a general voice assistant for zero-cost improvised questions, and PrepRole for tailored voice rehearsal across five Interview Stages with a hiring-style Scorecard.
Is there a free AI mock interview tool?
Yes. Aced's peer sessions are free within a monthly credit allowance, Yoodli offers five lifetime sessions free, PrepRole offers one free guest Mock Session with no account and a free account to keep Scorecards, and ChatGPT or Gemini voice mode works for improvised practice. Google Interview Warmup, a former free option, was retired in April 2026.
Is using an AI copilot during a real interview okay?
Undisclosed live assistance can count as misrepresentation to the employer, and tools like Final Round AI state their copilot is not a substitute for preparation. Practise openly instead: rehearse aloud before the interview and debrief afterwards.
Does my interview video leave my device?
No. Camera framing, lighting, and gaze checks run in your browser and stay on your device; only your voice goes to the AI Interviewer. The Scorecard stores transcript text, not video.
Can an AI interviewer replace a real interview?
No. AI practice reproduces question pressure and gives feedback, but it cannot predict a specific company's private process or a human interviewer's judgement. Treat AI feedback as practice guidance, not a hiring outcome.
Practise the next answer
Try a 5-min mock interview with sample data to hear the AI Interviewer without an account, or choose Practise for your job to rehearse with your resume and a job post.
Sources and scope
Product guidance describes PrepRole's current workflow, not a claim that every interview tool works this way. Examples are illustrative, and AI-generated questions and feedback may be inaccurate. Read the linked privacy page before sharing personal or confidential information.
Related guides
AI feedback can be wrong. A practice Verdict is not a hiring decision.