Is Stealth Interview a LeetCode Wizard alternative?

Yes, and it covers the half of the round LeetCode Wizard's pages do not describe. Both are desktop applications that read the coding problem on your screen and return a solution. Stealth Interview runs on macOS and Windows, adds live transcription of interviewer audio, includes a step-by-step explanation and time and space complexity with each solution, and lets you choose the AI model on your plan.

Does Stealth Interview only work on LeetCode problems?

No. It reads whatever coding problem is on your screen, and stays hidden on the platforms interviewers use: CoderPad, HackerRank, CodeSignal and LeetCode, in Zoom, Google Meet, Microsoft Teams and Webex calls.

What do the two products cost?

Stealth Interview is $49 a month for Starter, $150 for six months for Premium and $250 for a year for Hunter, with unlimited usage. LeetCode Wizard's pricing page listed a single Pro plan at EUR 49 per month when we read it in August 2026.

Does it explain the solution or just print it?

Both. Every solution comes with a step-by-step explanation and its time and space complexity, which is what you need when the interviewer asks you to walk through it.

Is there a version for a second device?

No. Stealth Interview is a single desktop application for macOS and Windows that draws its own window on the machine you are interviewing on, and that window is not captured by screen-sharing or meeting software.

LeetCode Wizard Alternative: More Than the Algorithm

LeetCode Wizard solves the algorithm. Then the interviewer asks why, out loud, and its pages (August 2026) don't describe hearing that. Stealth Interview reads the problem and hears the follow-up.

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Rec00:23:52Technical interview · 45 min

{}PYsolution.pyREADME.mdRunShared editor · Python 3

# Write your code here

def length_of_longest_substring(s: str) -> int:

last_seen = {}

left = best = 0

for right, ch in enumerate(s):

if ch in last_seen and last_seen[ch] >= left:

left = last_seen[ch] + 1

Test casesConsoleRun your code to see the output.

Case 1Case 2Case 3

Inputs = "abcabcbb"

Expected3

Problem

Longest substring without repeats

Medium

Given a string s, return the length of the longest contiguous substring in which every character is unique.

Example

in s = "abcabcbb"

out 3 ("abc")

Constraints

0 ≤ len(s) ≤ 50,000
s may contain letters, digits, symbols and spaces.

Hint 1Hint 2Topics

Auto-saved

DWARConnected · 2 participantsLn 1, Col 1Spaces: 4UTF-8Python 3

You are sharing your screenStop sharing

Dana Whitfield· Interviewer

You

Participants2Chat

DWDana WhitfieldInterviewer

ARYouSharing screen

RecThis meeting is being recorded.

Message everyone

MuteStop videoShare2ParticipantsChatReactionsLeave

Rec00:23:52

Dana

You

You are sharing your screenStop sharing

PYsolution.pyRun

Longest substring without repeatsMedium

# Write your code here

def length_of_longest_substring(s: str) -> int:

last_seen = {}

left = best = 0

for right, ch in enumerate(s):

if ch in last_seen and last_seen[ch] >= left:

left = last_seen[ch] + 1

2Leave

90%Subscription

python

Please analyze this context and help me answer the question or solve the problem.

Transcript

"Okay, next one. Given a string, return the length of the longest substring that has no repeating characters. Walk me through your approach before you code it."

Technical interview · 45 minsolution.pyShared editor · Python 3Longest substring without repeatsMediumGiven a string s, return the length of the longest contiguous substring in which every character is unique.s = "abcabcbb"
→ 31def length_of_longest_substring(s: str) -> int:2 last_seen = {}3 left = best = 04 for right, ch in enumerate(s):5 if ch in last_seen and last_seen[ch] >= left:

python

def length_of_longest_substring(s: str) -> int:    last_seen = {}                    # char -> index    left = best = 0    for right, ch in enumerate(s):        if ch in last_seen and last_seen[ch] >= left:            left = last_seen[ch] + 1  # jump past it        last_seen[ch] = right        best = max(best, right - left + 1)    return best    last_seen = {}                    # char -> index

Approach

At each index r, the window's left edge is:

left r = max (left r -1, last[s r] + 1)

Time O(n): each character enters and leaves the window once.
Space O(min(n, k)): k is the size of the character set.

Type your message...

GPT-6.1 Terra

Transcribing...

90%Subscription

python

Please analyze this context and help me answer the question or solve the problem.

Transcript

"Okay, next one. Given a string, return the length of the longest substring that has no repeating characters. Walk me through your approach before you code it."

python

def length_of_longest_substring(s: str) -> int:    last_seen = {}                    # char -> index    left = best = 0    for right, ch in enumerate(s):        if ch in last_seen and last_seen[ch] >= left:            left = last_seen[ch] + 1  # jump past it        last_seen[ch] = right        best = max(best, right - left + 1)    return best    last_seen = {}                    # char -> index

Approach

At each index r, the window's left edge is:

left r = max (left r -1, last[s r] + 1)

Time O(n): each character enters and leaves the window once.
Space O(min(n, k)): k is the size of the character set.

Type your message...

GPT-6.1 TerraClear chat

Transcribing...

QuitEscHide+QCapture+PCrop+OSubmit+EnterPress to get answerLeft/Right+Up/Down+

90%Subscription

python

Please analyze this context and help me answer the question or solve the problem.

Transcript

"Okay, next one. Given a string, return the length of the longest substring that has no repeating characters. Walk me through your approach before you code it."

python

def length_of_longest_substring(s: str) -> int:    last_seen = {}                    # char -> index    left = best = 0    for right, ch in enumerate(s):        if ch in last_seen and last_seen[ch] >= left:            left = last_seen[ch] + 1  # jump past it        last_seen[ch] = right        best = max(best, right - left + 1)    return best    last_seen = {}                    # char -> index

Approach

At each index r, the window's left edge is:

left r = max (left r -1, last[s r] + 1)

Time O(n): each character enters and leaves the window once.
Space O(min(n, k)): k is the size of the character set.

Type your message...

GPT-6.1 TerraClear chat

Transcribing...

Primary display

QuitEscHide+QCapture+PCrop+OSubmit+EnterPress to get answerLeft/Right+Up/Down+

Works with

Zoom
Meet
Teams
Webex
CoderPad
HackerRank
CodeSignal
LeetCode

Reviewed August 2026

The row that decides itInterviewer audio

Stealth Interview: Transcribed live and used as context
LeetCode Wizard: Not described on the pages we read

Stealth Interview compared with LeetCode Wizard across 9 capabilities.
Capability	Stealth InterviewLive technical interview copilot	LeetCode WizardCoding-interview copilot
Native desktop appA macOS and Windows application, not a browser tab.	macOS and Windows	Desktop plus a web view
Built for the live roundAnswers during the interview itself, not a practice session after it.	Yes	Yes
Reads the problem off your screenCapture the question where it appears and get a working solution back.	Yes	Yes
Full explanation and complexityEvery solution arrives with the reasoning and its time and space cost.	Yes	Complexity analysis
System design and OODArchitecture answers with a diagram, not only algorithm problems.	Yes	Algorithm problems
Live interviewer audioWhat is asked out loud is transcribed and used as context for the answer.	Yes	Not stated
Named assessment platformsThe tools interviewers actually run problems in.	CoderPad, HackerRank, CodeSignal, LeetCode	HackerRank, CodeSignal, Codility
Choose your modelPick the engine per question instead of taking one fixed model.	6 models across the plans	Not stated
Published priceWhat the vendor's own pricing page showed when it was read.	$49 / month · $150 / 6 months · $250 / year	EUR 49 / month

NoteWe filled in their column from their own website, so “Not stated” means we could not find it — not that it is missing. Prices and features change, so check theirs before you buy. Last reviewed August 2026. Sources: leetcodewizard.io.

What LeetCode Wizard actually is

LeetCode Wizard's home page (August 2026) uses blunter language than the rest of this category: it calls itself an AI-powered coding interview cheating app and promises instant answers to LeetCode problems.

LeetCode Wizard is a desktop application aimed squarely at algorithm rounds. Its home page (August 2026) describes instant answers to LeetCode problems, delivered by an app it says is invisible to screen-sharing software and screenshots and controlled with hotkeys.

The same page describes a web view for a secondary device, algorithm suggestions ordered by time complexity, code output with tests and complexity analysis, custom-trained models for problems it has and has not seen before, and output it calls humanised.

Pricing is published: its pricing page (August 2026) lists a single Pro subscription at EUR 49 per month, states that any input source is allowed and names HackerRank, CodeSignal and Codility, and advertises a support response within six hours.

Everything about LeetCode Wizard on this page was read on its own site (opens in a new tab) in August 2026. Where its pages are silent we say so; we don't test rivals' software or guess what it does.

Where it costs you in the round

Its pages stop at the problem statement. A coding round is also the spoken follow-ups, and the pages we read (August 2026) describe no live transcription of interviewer audio.
One plan, EUR 49 every month, per its pricing page (August 2026): no shorter option, and no discount for a longer search.
On the pages we read, the models are described as custom-trained and nothing more, so you cannot choose the engine behind the answer.
Its second-device web view moves the answer to another screen, and your eye-line goes with it.

Credit where it's due

One plan, one price, published — no tier matrix to decode.
Its pricing page names the input sources it supports, including Codility, which few competitors mention at all.
A web view for a secondary device is a genuinely different approach to the same problem.
Suggestions ordered by time complexity match how algorithm rounds are actually scored.
Output includes tests and complexity analysis, per its home page.
Euro billing, which is one less conversion for buyers in the euro area.

How the two are built

Both products are desktop applications that read a coding problem and produce an answer, so the architectural difference is in scope and in delivery surface.

LeetCode Wizard's published design centres on the problem: solve it, order the candidate algorithms by time complexity, emit code with tests. It also offers a second surface — a web view intended for another device — which moves the answer off the interview machine entirely. That is a legitimate and quite different strategy, with a different set of practical consequences: another screen to look at, another device to manage, and an eye-line that is not where the interviewer expects it.

Stealth Interview keeps everything on one machine and adds a second input instead of a second screen. Interviewer audio is transcribed continuously, so the tool has both halves of the round: the written problem and the spoken conversation about it. In interviews where the interviewer asks what you would change if the input did not fit in memory, that second half is where the score is decided.

As everywhere in this comparison, none of the above is a claim about what any platform can observe when either product runs. It is a description of what the two companies publish about how their products are built.

What the platforms actually document

A product named after LeetCode invites a specific question: what actually happens on the platforms interviews run on? The answer is documented by those platforms, not by vendors.

HackerRank's knowledge base (August 2026) describes Secure Mode as a controlled browser environment that enforces full screen, blocks copy and paste, prevents multiple monitors and flags tab switches, and Proctor Mode as adding screenshot analysis, plagiarism detection and webcam anomaly detection. Its separate Desktop App Mode requires the candidate to install an application that blocks other applications during the test, detects and closes programs opened during it, prevents screenshots and screen sharing, continuously checks for multiple monitors and screen mirroring, and refuses to run on a virtual machine.

Two useful consequences. First, plagiarism detection compares your submission against known solutions, so a pasted textbook answer is a documented risk independent of any tool. Second, in Desktop App Mode no overlay of any kind is an appropriate answer. The only durable strategy is to know the patterns — which is why this site publishes a full pattern library rather than only comparison pages.

The test is in a tab. The answer isn't.

Unless Desktop App Mode is on, a HackerRank test is a web page. Stealth Interview runs outside it, in a desktop window set to be excluded from screen capture.

It doesn't change what the webcam sees, the editor's own record of pastes and typing, or a browser noticing focus leave the test, and we haven't tested every browser and OS version a test runs on. Desktop App Mode is HackerRank's own native app, documented to close other programs: plan on Stealth Interview not running beside it, and prepare with the backtracking pattern instead.

What each HackerRank mode records

The spoken half of the round is covered

Interviewer audio is transcribed live. In a real coding interview, the problem statement is the first five minutes; the rest is questions asked out loud about complexity, edge cases and alternatives.

Explanations built to be said aloud
Every solution comes with a step-by-step explanation and its time and space complexity, because you have to narrate the answer, not just produce it.
Model choice, per plan
GPT-6 Luna and GPT-6.1 Terra on Starter; GPT-6.1 Sol, GPT-6 Astra, Claude Sonnet 5.5 and Claude Opus 5.5 on Premium and Hunter.
Plans that get cheaper the longer you search
$49 a month, $150 for six months, $250 for a year — a search that lasts a season costs less per month than one that lasts a week.
One machine, one window
A native macOS and Windows app that draws its own window and is not captured by screen-sharing or meeting software.

When LeetCode Wizard is the better buy

Your rounds are pure algorithm problems: If every interview you are taking is a LeetCode-style question in an editor with no discussion around it, a product built for exactly that is a reasonable purchase. Stealth Interview covers the same ground and adds interviewer transcription — which is worth nothing to you if nobody is talking.
You want a second screen rather than an overlay: Their web view for a secondary device puts the answer on different hardware entirely. That is a fundamentally different setup from an overlay on the interview machine, with its own advantages, and if your desk is arranged for it, it may suit you better.
You want one price and no decisions: A single Pro plan at EUR 49 a month means no tier comparison and no upgrade prompts. Our three plans exist to make longer searches cheaper per month, but they are three plans, and some people would rather have one.

What the round is worth

Every plan on this page costs less than one offer is worth. The question is which one was built for the round.

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Company names and logos are trademarks of their owners. They show where technical interviews happen and are not customers, partners or endorsements.

Every plan includes unlimited usage

Starter

$49/ month

Get Starter

Includes:

GPT-6 Luna and GPT-6.1 Terra models
Desktop app for macOS and Windows
Conversational AI with follow-ups
Real-time interviewer audio transcription
Unlimited usage

Premium

Recommended

$150/ 6 months

Get Premium

Everything in Starter, plus:

GPT-6.1 Sol, GPT-6 Astra, Claude Sonnet 5.5 and Claude Opus 5.5
Early access to premium AI models
Accelerated AI solutions
Priority support

Hunter

$250/ year

Get Hunter

Everything in Premium, plus:

Unlimited Premium AI model usage
2-hour support window
Ultra-accelerated AI solutions
Priority features

LeetCode Wizard

As published

Per LeetCode Wizard's pricing page (opens in a new tab).

ProEUR 49 / month

Note

Their figure is transcribed as printed, in the currency printed, on the date shown. We have not converted it into dollars: exchange rates move and a converted price would be a number neither company ever published.

5 questions

LeetCode Wizard alternative: common questions

Is Stealth Interview a LeetCode Wizard alternative?: Yes, and it covers the half of the round LeetCode Wizard's pages do not describe. Both are desktop applications that read the coding problem on your screen and return a solution. Stealth Interview runs on macOS and Windows, adds live transcription of interviewer audio, includes a step-by-step explanation and time and space complexity with each solution, and lets you choose the AI model on your plan.
Does Stealth Interview only work on LeetCode problems?: No. It reads whatever coding problem is on your screen, and stays hidden on the platforms interviewers use: CoderPad, HackerRank, CodeSignal and LeetCode, in Zoom, Google Meet, Microsoft Teams and Webex calls.
What do the two products cost?: Stealth Interview is $49 a month for Starter, $150 for six months for Premium and $250 for a year for Hunter, with unlimited usage. LeetCode Wizard's pricing page listed a single Pro plan at EUR 49 per month when we read it in August 2026.
Does it explain the solution or just print it?: Both. Every solution comes with a step-by-step explanation and its time and space complexity, which is what you need when the interviewer asks you to walk through it.
Is there a version for a second device?: No. Stealth Interview is a single desktop application for macOS and Windows that draws its own window on the machine you are interviewing on, and that window is not captured by screen-sharing or meeting software.

Approach

Approach

Approach

What LeetCode Wizard actually is

Where it costs you in the round

Credit where it's due

How the two are built

What the platforms actually document

The test is in a tab. The answer isn't.

The spoken half of the round is covered

Explanations built to be said aloud

Model choice, per plan

Plans that get cheaper the longer you search

One machine, one window

When LeetCode Wizard is the better buy

What the round is worth

Every plan includes unlimited usage

Starter

Premium

Hunter

LeetCode Wizard

LeetCode Wizard alternative: common questions

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