Best Free AI Interview Practice Tools (2026 Guide)

The free interview-practice landscape just changed

If you searched for a free way to practice interviews with AI six months ago, the answer was easy: Google Interview Warmup. It was free, browser-based, needed no login, and launched in 2022 as part of the Grow with Google initiative. Then it quietly disappeared. There was no farewell blog post - the tool was retired around April 2026, and its original URL now redirects to a generic "how to prepare for an interview" article¹. (Worth verifying the redirect yourself before you rely on it; vendor pages move fast.)

That retirement left a real gap at the entry-level end of the market. And here's the truth most "best free interview practice" listicles skip: a lot of "free" tiers are tiny. One popular tool caps you at five lifetime sessions; a respected veteran has no free tier at all. So this guide does two things - it gives you a framework for judging any free AI interview tool, and it tells you what is actually free right now, dated as of June 2026 and flagged for re-verification because free tiers change constantly and are often region-detected.

How to judge a free AI interview-practice tool

Before the rankings, the framework. The interview-prep market splits into four formats, and knowing which one a tool belongs to tells you most of what you need to know:

1. Genuine two-way spoken mock. The AI holds a live conversation - it asks a question, listens to your spoken answer, and asks an adaptive follow-up. This is the closest thing to a real interview and the format that builds real composure.
2. One-way recorded answer + AI feedback. You record an answer to a prompt; the tool critiques delivery and content afterward. Useful for HireVue-style video practice, but there's no back-and-forth.
3. Question bank or structured course. A library of questions, sample answers, and lessons. Great for content prep, but you're studying, not rehearsing out loud.
4. Live interview "copilot." These feed you answers during the real interview and market themselves as "undetectable." This is a different and risky category - covered below under what to avoid.

With the map in hand, judge any free tool against five criteria:

• Is it genuinely free, or free-to-start? Look past the word "free" to the cap. Five lifetime sessions is a demo, not a practice tool.
• Two-way or one-way? A spoken back-and-forth trains different muscles than recording a monologue.
• Does it tailor to your role and job description? Generic questions are fine for warm-ups; JD-specific questions are what actually prepares you.
• Do you get useful, specific feedback? Per-answer grades and concrete "what to improve" beat a vague delivery score.
• Is it ethical and safe? Practice tools build your skill. Copilot tools feed you lines mid-interview and can get you disqualified.

The comparison table (as of June 2026)

Every price and free-tier below is dated June 2026 and should be re-verified on the vendor's own page before you rely on it - these change often and are sometimes shown in different currencies or region-detected.

The rankings: best free AI interview practice tools in 2026

1. HiredKit - best genuinely free first mock for most people

Verdict: The most complete free starting point now that Google Warmup is gone - a real spoken mock with live coaching and graded feedback, where the first interview stage costs nothing.

HiredKit sits in the two-way spoken category: it runs a real, role- and job-description-specific mock that talks back, asks adaptive follow-ups, and judges when your answer is complete rather than counting to a fixed number. The differentiator at the free tier is that the first interview stage is free - so you can run a genuine spoken mock, end to end, before deciding anything. That matters precisely because the easy free default (Warmup) is dead and several rivals' free tiers are thin.

Two features stand out for free-tier users. Rupert is a live, in-the-moment AI coach you can switch to mid-interview - if you freeze on "tell me about yourself" or need help structuring a STAR answer on the spot, you get coaching while you practise, not a critique an hour later. And you get per-part graded feedback - a score plus specific "what you did well" and "what to improve" after each section, with the full transcript. Try it in the AI interview simulator; facing a recorded round, the HireVue one-way video practice covers that format too.

Pros:

• Genuinely free first interview stage - a real spoken mock, not a 30-second demo
• Live in-the-moment coaching (Rupert) - distinct from both post-hoc feedback and risky copilots
• Role/JD-specific questions, adaptive follow-ups, per-part grades, and a full transcript
• Ethical by design: it builds your skill, so it can't get you disqualified

Cons (the honest part):

• Spoken-AI latency and naturalness aren't identical to a human interviewer - true of every spoken-AI tool today
• No dedicated coding IDE or screenshot capture - if you need a deep technical/system-design environment, a specialist fits better (see interviewing.io below)
• It's not a substitute for a real human's judgment on a high-stakes FAANG loop

Best for: Anyone who wants a real, free spoken mock with coaching and grades - behavioral, role-specific, phone, panel, or video prep.

2. interviewing.io - best free AI interviewer for engineers (and best paid humans)

Verdict: The strongest free AI option for software engineers, and the place to pay for genuine FAANG-caliber humans when the stakes justify it.

interviewing.io offers a free AI Interviewer alongside its paid human mock interviews, and the human side is its real edge: these are vetted, FAANG-caliber engineers who deliver judgment no AI matches. For a final-round system-design loop at a top company, that human signal is worth paying for.

Pros:

• Free AI Interviewer to practise with at no cost
• Access to real, senior human interviewers (paid) - the gold standard for high-stakes loops
• Deep engineering and coding focus with proper technical tooling

Cons:

• Heavily engineering-focused - less suited to non-technical roles
• The valuable human sessions are paid and typically login-gated
• Less of a general-purpose behavioral-practice tool

Best for: Software engineers prepping technical and system-design rounds, especially those who'll later pay for a human mock.

3. Yoodli - best free tier for delivery and speaking polish

Verdict: Excellent communication coaching, but the free tier is a demo, not a practice habit.

Yoodli is an AI roleplay and speech-coaching platform with live conversational practice and real-time feedback on content, delivery, pacing, conciseness, and sentence starters, plus AI follow-up questions³. Its delivery analytics - filler words, pace, conciseness - are genuinely strong. The catch is the free tier: the Starter plan is permanently capped at five lifetime roleplay sessions (any session over 30 seconds counts), with no way to earn or reset more⁴. The cheapest paid plan is Pro at $8/month billed annually; no monthly billing price is published².

One more thing worth knowing if privacy matters to you: on the free Starter and paid Pro plans, session data may be used to improve the platform, while exclusion from AI training is gated to the Advanced plan ($20/month billed annually)⁵.

Pros:

• Best-in-class delivery analytics (filler words, pacing, conciseness)³
• Real conversational roleplay with AI follow-ups³

Cons:

• Free tier is five lifetime sessions - effectively a trial⁴
• Data-exclusion from AI training is gated to a higher tier⁵
• Coaching is delivery-centric rather than role/JD-specific interview simulation

Best for: Speakers polishing delivery who'll convert to paid - or who only need a handful of practice runs.

4. OphyAI - most formats in one free tier (with a caveat)

Verdict: A versatile multi-tool with a usable free taste - but it also sells the kind of live copilot you should think twice about.

OphyAI bundles an AI Interview Coach (voice-mode mock practice with feedback), an AI resume builder, and a job/application tracker - plus an "invisible" real-time live-interview copilot for Zoom, Teams, and Meet⁸. Its free plan gives you 5 one-time credits, 1 free Interview Coach session, the Application Tracker, and the ability to build (but not download) a resume; downloading the AI-built resume costs 5 credits⁶. The cheapest paid plan is Basic at £7/month billed monthly, including 100 credits, with annual plans saving 20% (pay for 10 months, get 12)⁷. Pricing is shown in GBP only⁸.

Pros:

• One free session plus credits to try multiple tools⁶
• Voice-mode practice that surfaces filler words⁸
• Resume builder and application tracker included⁶⁸

Cons:

• Free credits are one-time and small (5)⁶
• Pricing is GBP-only, awkward for non-UK users⁸
• Also markets a live-interview copilot - the risky category⁸

Best for: Job seekers who want to sample mock practice, resume help, and tracking in one place - and who steer clear of the copilot.

5. Exponent - best free peer mocks for PM and system design

Verdict: Great for structured PM and system-design practice with other humans - just remember your "interviewer" is a fellow candidate.

Exponent (which absorbed Pramp as its free tier) gives a free tier with sample course lessons, 5 peer mock interview credits per month, limited interview questions without company-specific filters, and basic job-referral features⁹. Full courses, unlimited peer mocks, and 2,000+ company-filtered questions require a paid subscription. Pricing runs $79/month or about $12/month billed annually (~$144/year), with 1:1 coaching sold separately starting at $200+/hour¹⁰.

Pros:

• Five free peer mocks per month - genuinely recurring free practice⁹
• Strong for PM, system design, and structured curricula⁹
• Real human practice partners

Cons:

• Peers are fellow candidates, not vetted interviewers⁹
• Company-filtered question banks and full courses are paid⁹
• Expert 1:1 coaching is a separate $200+/hour cost¹⁰

Best for: PM and system-design candidates who want recurring human practice and don't mind that partners are peers.

Google Interview Warmup - the free default that's gone

Verdict: Don't send people here anymore - it's retired.

While it ran, Google Interview Warmup was completely free with no paid tier and no login, letting you answer job-category questions aloud or by typing with real-time AI transcription and speech-pattern analysis¹². It was the obvious free starting point. As of June 2026 it's been retired (around April 2026), and its URL redirects to a generic interview-prep article¹. If a guide still recommends it, that guide is stale.

Interview Prep AI - a cautionary listing

Verdict: Appears to be defunct - don't rely on it.

The domain interviewprepai.com now redirects to a GoDaddy domain-for-sale page as of June 2026, so the product at that URL is no longer active and no pricing or features can be verified from the vendor's own site¹¹. We include it only so you don't waste time chasing it.

A category to approach with caution: live "copilot" tools

Separate from practice tools is a category that markets itself as "undetectable" and feeds you answers during the real interview - overlays that transcribe the interviewer and suggest lines in real time. The appeal is obvious; the risk is real. Throughout 2026, major employers have actively countered these tools, and a detection counter-industry now exists. Getting flagged mid-loop can end a candidacy on the spot.

The cleaner path is to build the skill so you don't need a crutch. If you came here from researching those tools, our breakdown of ethical alternatives to live interview copilots walks through practice-first options. For a wider view of the paid landscape, see the best AI interview prep tools of 2026.

Frequently asked questions

What's the best free way to practice an interview with AI in 2026?

For most people, the best free option is a tool that gives you a genuine two-way spoken mock with feedback at no cost - HiredKit's free first interview stage is the most complete starting point now that Google Interview Warmup is retired. For software engineers, interviewing.io's free AI Interviewer is strong. Pick a tool whose free tier is actually usable, not a five-session demo.

Is Google Interview Warmup still available?

No. Google Interview Warmup was retired around April 2026 with no major announcement, and its original URL now redirects to a generic interview-preparation article¹. While it ran, it was completely free, required no login, and analysed your spoken answers in real time¹² - which is exactly why its disappearance left a gap. Verify the redirect yourself if you want confirmation.

How limited are these "free" tiers really?

More than the word "free" suggests. Yoodli's free Starter plan is capped at five lifetime roleplay sessions with no reset⁴. OphyAI's free plan gives five one-time credits and one Interview Coach session⁶. Exponent offers five peer mocks per month⁹. Big Interview, a mature veteran, has no free tier at all. Always check the cap, not just the label.

Are AI interview copilots safe to use?

They carry real risk. Live copilots feed you answers during the actual interview and market themselves as "undetectable," but major employers actively work to detect them in 2026, and being caught can disqualify you. Practice tools are the safe alternative: they build your skill beforehand so you perform on your own merit and can't be flagged for using them.

Can a free AI mock replace practising with a human?

Not entirely. A free AI mock is excellent for reps, composure, and feedback at scale, and for most rounds it's enough. But for high-stakes loops - a FAANG final, say - real human interviewers still offer judgment AI can't match. Use free AI mocks to build the habit, then add a human session if the stakes justify the cost.

Putting it together

The free interview-practice market in 2026 isn't what it was. The default option vanished, several "free" tiers are demos in disguise, and copilot tools trade short-term help for real disqualification risk. The winning move is to start with a free, ethical, two-way spoken mock - real reps, real follow-ups, specific feedback - then add a human session if your loop is high-stakes.

If you want that free first rep now, run a real spoken mock in the HiredKit AI interview simulator: the first interview stage is free, it tailors to your role and job description, switches to live coaching with Rupert the moment you need it, and grades each part so you know exactly what to fix before the real thing. And once your speaking is sharp, brush up your answers with our guide to acing "tell me about yourself".

Prices and free tiers above are accurate as of June 2026, are sometimes region-detected or currency-specific, and change frequently - re-verify on each vendor's own page before relying on them.