TL;DR

For AI-powered practice: MORT (flexible, good for behavioral + technical) or Interview Warmup (free, Google-focused).For human feedback: Pramp (free peer practice) or Interviewing.io (paid, real interviewers).For video analysis: Big Interview or Yoodli. The best tool depends on your budget, role, and whether you want AI convenience or human feedback.

Why Mock Interviews Matter

Here's the thing about interview prep: you can memorize every answer in your head, but the first time you say it out loud to another person (or an AI), it comes out completely different.

Mock interviews aren't about perfecting scripted answers. They're about getting comfortable with the act of interviewing-thinking on your feet, structuring your responses in real-time, and not freezing when you get a curveball question.

The research backs this up: candidates who do 5+ mock interviews significantly outperform those who only do mental preparation. The difference is practice under pressure.

Quick Comparison

ToolTypeBest ForPrice
MORTAI Interview PracticeBehavioral, technical, PM interviewsFree tier available
Interview WarmupAI PracticeGoogle-style questions, entry-levelFree
PrampPeer PracticeCoding interviews, free human feedbackFree
Interviewing.ioProfessional InterviewersFAANG prep, serious candidates$100-225/session
Big InterviewVideo PracticeRecording yourself, self-review$79-299/year
YoodliAI Speech CoachPresentation skills, filler wordsFree tier available

AI-Powered Mock Interview Tools

AI tools have gotten remarkably good at simulating interviews. They're available 24/7, never judge you, and let you practice as many times as you want. The trade-off: they can't fully replicate human intuition or give you the "vibe check" a real interviewer would.

MORTOur Pick

Full disclosure: this is our tool. But we built it because we were frustrated with what existed.

What it does wellMORT offers 5 interview types (Behavioral, Product Sense, Technical, Execution, and Analytics) across 75+ roles and 7 seniority levels. What makes it different from general-purpose interview tools: MORT tailors questions to your actual CV and the specific job you're interviewing for, so the practice is directly relevant to what you'll face. Adaptive follow-up questions based on your answers (not scripted) with instant scoring and specific feedback on structure and content.
Where it's limitedAI feedback, while good, isn't the same as hearing "that answer didn't land" from a human. For high-stakes interviews (like FAANG finals), you should supplement with human practice.
Key differentiatorMost interview tools are standalone - you practice generic questions with no connection to the job you're applying for. MORT's interview practice is integrated into the same platform where you find jobs and build your resume, so it knows exactly which role you're preparing for and tailors the practice accordingly.
Best forGetting lots of practice reps across different interview formats, building confidence, and preparing for specific roles at specific companies. Especially useful if you're using MORT for job matching already.
PriceFree tier (1 practice session/day), Pro from £3.99/week for unlimited.

Google Interview Warmup

Google built this free tool primarily for their career certificate programs, but anyone can use it.

What it does wellCompletely free, analyzes your spoken answers for talking points and job-related terms, good for basic interview practice if you've never done mock interviews before.
Where it's limitedQuestions are fairly generic, limited to certain career fields, no follow-up questions (it's more like a practice prompt than a conversation), feedback is basic.
Best forComplete beginners who want free, low-pressure practice. Good starting point before moving to more sophisticated tools.
PriceFree

Yoodli

Less of an interview simulator, more of a speech coach. Analyzes how you speak, not what you say.

What it does wellTracks filler words ("um," "like"), speaking pace, eye contact (if on video), and confidence. Great for people who know what to say but struggle with delivery.
Where it's limitedDoesn't evaluate the content of your answers, won't help you structure a behavioral response or improve your technical explanations.
Best forPeople who've been told they speak too fast, use too many filler words, or seem nervous on camera. Supplement to content-focused practice.
PriceFree tier available

Human-Powered Mock Interviews

Nothing fully replaces practicing with a real person. These services connect you with humans-either peers or professional interviewers.

Pramp

Peer-to-peer practice. You interview someone, they interview you. Both learn.

What it does wellFree, you get real human feedback, good for coding interviews where you need to practice with another person watching you code, builds community.
Where it's limitedQuality varies wildly depending on who you're paired with, requires scheduling (not on-demand), peers might not have good feedback skills, less useful for non-technical interviews.
Best forCoding interview practice when you can't afford paid services. The reciprocal format also helps you learn by interviewing others.
PriceFree

Interviewing.ioPremium

Practice with engineers who've worked at top companies. This is the premium option.

What it does wellInterviewers are experienced (often from FAANG), highly realistic simulations, detailed feedback, some sessions can lead to job referrals, anonymous until you choose to reveal yourself.
Where it's limitedExpensive ($100-225 per session), focused on technical/coding roles, need to book in advance, limited availability.
Best forSerious candidates preparing for FAANG or top-tier startup interviews who want professional-level feedback. Worth it for final-round prep.
Price$100-225/session

Video Practice Platforms

Big Interview

Record yourself answering questions, then review. Old-school but effective.

What it does wellLarge question library, curriculum-based approach, seeing yourself on video reveals problems you'd never notice otherwise, good for people who hate watching themselves (which is exactly why you should).
Where it's limitedNo real-time interaction, feedback is mostly self-review (though they have some AI analysis), subscription model can get expensive.
Best forPeople who've never watched themselves interview. The cringe is real, but it's incredibly useful.
Price$79-299/year

How to Choose the Right Tool

The "best" tool depends on where you are in your prep:

Just Starting Out?

Start with Google Interview Warmup (free) or MORT's free tierto get comfortable speaking answers out loud. The goal at this stage is just to start practicing.

Building Consistency?

Use an AI tool for volume. You need reps. Do 5-10 practice sessions to build muscle memory for common question types.

Preparing for a Specific Company?

Supplement AI practice with human feedback. If it's a high-stakes interview (FAANG, dream company), invest in a paid session on Interviewing.io or find a friend in the industry.

Struggling with Delivery?

Add Yoodli or Big Interview to work on how you speak, not just what you say.

Our Honest Take

We built MORT's interview practice because we think AI has gotten good enough to handle the "practice reps" part of interview prep. You shouldn't need to pay $200 or coordinate schedules just to practice answering "Tell me about yourself" for the twentieth time.

That said, for your most important interviews, human feedback still matters. The ideal approach is:

  • AI tools for volume and building baseline confidence
  • Human practice (friend, peer, or paid) for final-round prep
  • Self-review (video) to catch delivery issues you can't see

The candidates who do best aren't the ones who found the "perfect" tool. They're the ones who practiced enough that interviewing started to feel natural.

Try MORT's Interview Practice

Get unlimited AI mock interviews with adaptive follow-ups and specific feedback. Free to start-no credit card required.