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Live Interview Copilot·Invisible on screen share

Never blank outin an interview again

LastRound AI listens to your live interview and feeds you sharp, personalized answers in under 200 ms — completely undetectable on any screen share.

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Alex Chen
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LastRound AILive<> Code
22:15AskCaptureAnswerHide141End
Summarized question:
Clear

What is the difference between a Docker image and a Docker container? Explain how layers work in a Docker image and how they affect build caching.

Answer:
A Docker image is a read-only template that packages your application code, runtime, libraries, and system tools into a single artifact. A Docker container is a running instance of that image — it adds a thin writable layer on top where runtime state like logs, temp files, and in-memory data live. The key difference: images are immutable and shareable, while containers are ephemeral and isolated. You can spin up hundreds of containers from the same image, and each one gets its own writable layer without affecting the base image. Regarding layers — every Dockerfile instruction (FROM, RUN, COPY, ADD) creates a new layer. These layers are content-addressable and stacked sequentially. Docker caches each layer by its instruction hash, so if neither the instruction nor its inputs changed, Docker skips rebuilding that layer entirely. This is why you should always place frequently changing instructions (like COPY . .) at the bottom of your Dockerfile — it maximizes cache hits for the layers above.
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ZoomGoogle MeetMicrosoft TeamsCodeSignalHackerRankWebExSkypeAmazon ChimeZoomGoogle MeetMicrosoft TeamsCodeSignalHackerRankWebExSkypeAmazon Chime
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Invisible on Screen Share

Share your screen with confidence. Our AI overlay uses native OS-level rendering that screen capture APIs cannot detect.

codesignal.com/assessment/live
Screen Shared
solution.js
test.js
1function mergeSort(arr) {
2if (arr.length <= 1) return arr;
3
4const mid = Math.floor(arr.length / 2);
5const left = mergeSort(arr.slice(0, mid));
6const right = mergeSort(arr.slice(mid));
7
8return merge(left, right);
9}
10
11function merge(left, right) {
12const result = [];
13let i = 0, j = 0;
14
15while (i < left.length && j < right.length) {
16if (left[i] <= right[j]) {
17result.push(left[i++]);
18} else {
19result.push(right[j++]);
20}
21}
JavaScript  |  UTF-8Ln 8, Col 32
Invisible to others
codesignal.com/assessment/live
Screen Shared
solution.js
test.js
1function mergeSort(arr) {
2if (arr.length <= 1) return arr;
3
4const mid = Math.floor(arr.length / 2);
5const left = mergeSort(arr.slice(0, mid));
6const right = mergeSort(arr.slice(mid));
7
8return merge(left, right);
9}
10
11function merge(left, right) {
12const result = [];
13let i = 0, j = 0;
14
15while (i < left.length && j < right.length) {
16if (left[i] <= right[j]) {
17result.push(left[i++]);
18} else {
19result.push(right[j++]);
20}
21}
Live<> Code
28:45AskCaptureAnswerEnd
Summarized question:

Implement merge sort and explain the time complexity.

★ Answer:
Merge sort uses divide and conquer — split the array in half recursively, then merge sorted halves back. Time complexity is O(n log n) in all cases because we always split into halves (log n levels) and merge takes O(n) at each level. Space complexity is O(n) for the temporary arrays during merging.
JavaScript  |  UTF-8Ln 8, Col 32
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03

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Live Interview Copilot

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How We Compare

Same copilot. A fraction of the price.

Flat $19/month with stealth included — here's how the big names stack up.

vsFinal Round AI

Cheapest monthly plan is ~$148/mo, and stealth is paywalled to ~$96+/mo quarterly tiers.

LastRound AI: Stealth included at $19/month.

Full comparison
vsLockedIn AI

Prices hidden until signup — reconstructed plans run ~$35–$70/mo with per-minute credit burn.

LastRound AI: $19/month flat, published up front.

Full comparison
vsCluely

Undetectability costs $149.99/mo — the $19.99 Pro tier has no stealth.

LastRound AI: Stealth included at $19/month.

Full comparison
Compare all 12+ interview copilots →

Competitor pricing verified June 2026 — see each comparison page for sources.

What Our Users Say

Real testimonials from developers who transformed their interview experience

SC
Sarah Chen
✓
Software Engineer
Google
Interview Copilot

"Used LastRound AI for my Google interview - cleanest code I've written! The real-time suggestions helped me optimize my algorithms on the spot. Landed the offer! 🎉"

✓ Verified
AU
Anonymous User
✓
Senior Developer
Meta
Invisible Screen

"Got Meta and Amazon offers even though I failed all my CS classes! LastRound AI's invisible panel during screen share was a game-changer. Nobody suspected anything."

✓ Verified
MR
Mike Rodriguez
✓
Tech Lead
Amazon
Live Interview Copilot

"Revolutionary approach! LastRound AI changed the whole interview system for me. The AI coaching felt like having a senior engineer whispering the perfect solutions."

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Jason Levin
✓
Tech Influencer
Startup
Interview Coder

"Forget endless LeetCode grinding — LastRound AI is a game-changer for technical interviews. The real-time code suggestions and explanations are incredible. Worth every penny!"

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ET
Emma Thompson
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Full Stack Developer
Spotify
Mock Interview

"LastRound AI made the difference in my coding interview! Amazing platform that helped me explain complex algorithms clearly. The interviewer was impressed! 🚀"

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DK
David Kim
✓
Frontend Engineer
Netflix
Mock Interview

"The mock interview feature is incredible! Practiced with AI for weeks before my Netflix interview. The realistic scenarios and feedback helped me nail every question."

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Lisa Wang
✓
Product Manager
Uber
Resume Builder

"Resume builder feature got me 10x more callbacks! ATS-optimized templates and AI suggestions made my resume stand out. Landed PM role at Uber in 3 weeks!"

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Alex Johnson
✓
Backend Engineer
Airbnb
Live Interview Copilot

"Live interview copilot is pure magic! Real-time hints during my Airbnb system design round. The invisible screen sharing feature is undetectable. 10/10!"

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Priya Sharma
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Data Scientist
Microsoft
Interview Coder

"Interview coder helped me solve complex algorithms in real-time during my Microsoft interview. The AI explanations were spot-on. Got the offer same day!"

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Carlos Martinez
✓
DevOps Engineer
Tesla
Mock Interview

"Mock interviews prepared me perfectly for Tesla's tough technical rounds. The AI interviewer asked questions I hadn't even thought of. Confidence through the roof!"

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RG
Rachel Green
✓
iOS Developer
Apple
Resume Builder

"Resume builder's AI suggestions were game-changing! Highlighted skills I didn't know were valuable. Apple recruiter called within 2 days of applying!"

✓ Verified
TW
Tom Wilson
✓
Security Engineer
Stripe
Invisible Screen

"Invisible screen feature during live interviews is revolutionary! Helped me through Stripe's security architecture questions without anyone knowing. Genius!"

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Frequently Asked Questions

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