Free AI Mock Interview Practice, Compared Honestly

By Pooja Goenka · 2026-10-02

You finish a mock interview, get a score of 7 out of 10 and a paragraph of feedback that could apply to anyone. You did not learn which answer was weak, only that something was. Then you do the next one and get another 7.

Free AI mock interview tools are not all the same product. Some are built for behavioural rounds, some for coding, some are really a paid app with a free trial, and a few are a person on the other end of a calendar. I run LogicWiz, which has its own free mock interview tool, so I have a stake in this. I will tell you where ours is weaker than the others. Everything below comes from each product's own page, read in early October 2026. Where a page was silent, I say so. Plans change, so check the page before you commit.

What to look for

What "free" means. Free forever, free credits each month, free first session, and free to sign up but paid to practise are four different things.

Which round it practises. Behavioural answers and coding rounds need different tools. A tool that is excellent at "tell me about a time" may have nothing for system design.

Voice or text. Speaking an answer out loud is closer to the real thing. Typing is faster to review.

Who gives the feedback. An AI, a peer, or an experienced engineer. Each has a different failure mode.

What you get at the end. A score, a transcript, a list of what to fix.

Huru: free and focused on behavioural answers

Huru's page says the free plan includes unlimited mock interviews, the full AI feedback report, a library of more than 50,000 questions, custom interviews and a Chrome extension. You answer out loud on camera, and each answer is scored on relevance, structure, specificity, impact and articulation. Its emphasis is the STAR method for behavioural questions. The page says it also supports preparation for technical roles such as software engineering, but behavioural is where it puts its weight.

Who it suits: anyone who freezes on "tell me about yourself" and needs volume. If your worry is a system design round, this is not where I would start.

interviewing.io: real engineers, plus a free AI interviewer

interviewing.io covers algorithms, system design, machine learning, front-end, engineering management and behavioural practice. You can practise with experienced engineers from large companies, anonymously, over audio and chat with no video. It also offers an AI interviewer for people who are not ready for a human, and the page says you can work through more than 200 problems from Beyond Cracking the Coding Interview for free with it.

The page I read did not state what the human mock interviews cost, so look at the pricing before you plan around them. The honest summary: the human sessions are the closest thing to a real technical interview, and the free part is the AI interviewer and the problem set.

Who it suits: someone preparing for software engineering interviews at companies with a hard technical bar, who wants the realism of a real engineer's feedback.

Aced, formerly Exponent: peer practice with AI feedback

Aced runs peer-to-peer mock interviews, with AI feedback alongside. Its page says free users get credits each month and that members get unlimited access, with features such as AI transcripts and automatic grading limited to paid subscribers. It lists product management, data structures and algorithms, system design and behavioural, with SQL, data science, front-end and others in beta. Sessions are roughly thirty minutes each way, so about an hour in total, and you need an account. The page notes that scheduling here replaces what used to happen on Pramp.

Who it suits: people who learn well from interviewing another person, and who can fit an hour-long scheduled session into their week.

Final Round AI: strong feature list, practice is paid

Final Round AI's practice page lists eight scenarios: general, coding, system design, behavioural, product case, data and ML, salary negotiation and recruiter screen. It is voice-based and runs in a desktop app for macOS or Windows. The page says you can set up goals and upload materials without paying, but that starting a practice session needs a plan with session access, so the practice rounds themselves are a paid feature. The page I read quoted a price of $25, and pointed to the billing page for current details.

I include it because it shows up in "free mock interview" searches. If your requirement is truly free, check what the free plan allows before you install anything.

Who it suits: someone who wants a wide range of scenarios in one app and is happy to pay.

LogicWiz Interviews: free, with a spot-the-mistake mode

LogicWiz Interviews has an AI interviewer called Aria. She asks questions for the track you pick, takes your answer by voice or text, asks follow-ups, and ends the session with a scored report. There are 100 curated questions across 16 tracks, including backend, system design, machine learning, DevOps, SQL, security and behavioural. Practice is private and is not shared with any employer. Aria is an AI and says so.

The part I have not seen elsewhere is the second mode. In spot-the-mistake, the AI writes a confident, well-structured answer that contains one planted technical error, and you have to find it. If you flag something that was actually correct, that counts as a miss. I wrote about why that kind of practice builds a different skill: at work you rarely write the first draft of an answer, you review one, and review is where confident wrong answers get through.

The free plan gives you 3 AI practice sessions a day and needs a free account, with no card. A paid plan raises the daily limit.

Where we are weaker, plainly. A library of 100 questions is far smaller than Huru's 50,000. There is no human feedback, so nothing matches interviewing.io's sessions with working engineers. There is no company-specific preparation, and three sessions a day is a real cap if you want to grind through a weekend.

Side by side

I did not verify every tool that appears in search results, such as SmallTalk2Me or GoodSpace, so they are not rated here.

How to use them

Use one tool to get comfortable and one to get tested. Volume on a free behavioural tool builds the habit of structuring an answer. A human session, or a mode that checks your technical accuracy, tells you whether the content was right. Doing only the first can leave you fluent and wrong.

And review your own sessions. A score is a pointer. The useful part is the one answer you would now give differently.

Common questions

What is the best free AI mock interview tool?

It depends on the round. For behavioural practice with unlimited sessions, Huru's free plan is the broadest I found. For technical interviews with real engineers, interviewing.io. For free technical practice that checks whether you can catch an error, LogicWiz's spot-the-mistake mode.

Are AI mock interviews really free?

Some are. Huru lists unlimited free mock interviews, interviewing.io has a free AI interviewer and problem set, Aced gives monthly credits, and LogicWiz gives 3 sessions a day. Final Round AI's page says practice sessions need a paid plan. Read the plan details first.

Can AI mock interviews prepare me for coding and system design rounds?

Partly. AI tools are good for repetition and for catching gaps in your explanation. For realistic pressure, a human interviewer, as on interviewing.io, is closer to the real thing.

Do I need to speak my answers out loud?

It helps, because interviews are spoken. Huru and Final Round AI are voice-based. LogicWiz's Aria accepts voice or text, so you can start by typing and move to speaking.

Do I need an account?

Most of them ask for one, though some pages did not say outright. LogicWiz needs a free account and no card.