The most undetectable AI assistants for interviews & meetings (2026)
By The Assistly team ·
"Undetectable" gets thrown around a lot, and most of it is marketing. Before we rank anything, it helps to be precise about what detection actually means — because there are three separate things going on, and a tool can only honestly fix two of them.
What "undetectable" really means
There are three layers to staying unseen.
1. Screen-capture exclusion. The real, verifiable mechanism. A window can ask the OS to withhold itself from capture buffers — a built-in capability on both Windows and macOS. The window sits on your physical screen but never lands in a screen share or recording. It is real, but it is conditional: newer macOS capture paths (ScreenCaptureKit on macOS 15+) can composite visible windows before capture and bypass the older flags, and exclusion behaves differently for whole-screen vs single-window sharing. So invisibility depends on how well a tool is engineered and kept current. We go deep on the engineering in how undetectable AI overlays work.
2. Process-list scans. Some proctored platforms (HackerRank, Codility) scan your running processes against a blocklist of known assistant names. If your app shows up as "SomeFamousCopilot.exe" in Task Manager or Activity Monitor, that's a name-based tell — even if the overlay itself is invisible.
3. Behavioral tells. No software can fix these. A flat 3–5 second pause before every answer, left-right "reading" eyes, over-structured "documentation" phrasing, and collapsing under follow-ups all give people away. Vanilla Zoom/Meet/Teams calls cannot technically detect an overlay — there's no screen-recording-detection API — so on ordinary calls the risk is entirely behavioral. We cover that in can interviewers detect AI.
A genuinely undetectable tool nails layer 1, helps with layer 2, and reduces (but cannot eliminate) layer 3 by being fast and natural. Now the ranking.
1. Assistly — most undetectable overall
Assistly is a native always-on-top overlay for macOS (Apple silicon, macOS 13+) and Windows 10/11. It is not a browser extension and not a notetaker bot — it never joins your call as a participant.
Why it tops the list:
- Capture exclusion on every plan. The overlay is excluded from screen capture at the OS level, so it never appears in a screen share, recording, or screen-monitoring tool's frame. This isn't gated behind a premium "undetectability" tier — it's standard on Free and Pro.
- Renamable app + custom icon. You can rename the app and swap its icon/logo, so it doesn't surface as a recognizable assistant in the process list — which is exactly what defeats the name-based process scans HackerRank and Codility use.
- Low-latency streaming. Token-by-token guidance keeps your answers conversational instead of producing the tell-tale long pause.
- Persona-tuned + multi-speaker. Build a persona from your CV and notes so answers sound like you, and it separates your voice from others and tracks who said what on busy calls. It captures the call's own audio, so it works with headphones on.
- Interviews, meetings, and sales calls — not just coding.
- $14.99/mo flat. Free gives you 5 sessions/month (45 min each, full feature set, no card). Pro is unlimited for $14.99/mo. Every feature is on both plans; no separate undetectability upcharge.
A note on honesty: no overlay is magic, and you should use Assistly within the rules of any call and respect recording-consent laws. You control retention and can delete sessions anytime.
2. Cluely
The biggest brand in the space (a16z-backed), with a polished real-time overlay across macOS, Windows, and iOS, plus CRM and enterprise features. Genuine reach. But the undetectability that matters most is gated to a reported ~$149.99/mo "Pro + Undetectability" tier (base Pro is ~$20/mo). Independent tests measured 5–10s+ latency against an advertised ~300ms, and reviewers report it being flagged within seconds on CoderPad/HackerRank. Trustpilot sits around 1.8/5, dominated by billing and cancellation complaints, and in March 2026 founder Roy Lee admitted to TechCrunch that a prior $7M ARR figure was fabricated. See Assistly vs Cluely. Verify pricing on their site.
3. LockedIn AI
A real-time interview and meeting copilot (macOS, Windows beta, Chrome extension) with genuinely strong live-coding support. The catch: the browser extension is visible on screen share, and reviewers describe a 4–5 second "latency stare." Users on Trustpilot also report generic GPT-style answers, refund/cancellation friction, and detection via process-list scans on HackerRank/Codility. Reported pricing ~$49.99/mo (down to ~$29.99 quarterly), with lifetime up to ~$1,499. More in Assistly vs LockedIn AI.
4. Final Round AI
An all-in-one job suite: live Interview Copilot, AI mock interviews, résumé builder, and auto-apply, across web, a Chrome extension, and a "Stealth" desktop app. The mock-interview practice is genuinely well praised. But Trustpilot reviewers report hard-to-cancel billing, rebilling after cancellation, denied refunds despite an advertised 3-day guarantee, and aggressive trial auto-charges. The live Copilot is described as generic and laggy (sometimes stopping mid-interview), and the browser version is detectable on screen share. Reported pricing ~$99–$149/mo, ~$500/yr, add-ons extra. See Assistly vs Final Round AI.
5. Sensei AI
Sub-second latency, 30+ languages, and résumé personalization make Sensei attractive on paper. The structural problem: it's browser-based (web app + Chrome extension), so you join the call in a browser tab and there's no native desktop overlay. Reviewers report the extension is visibly active during screen sharing — one tester was caught in 2 of 5 meetings — and refund/support complaints put Trustpilot around 3.2/5. Interview-only. Reported pricing ~$24/mo annual, ~$89/mo monthly, with free 15-min sessions.
6. Ultracode
Strong coding and system-design answers via top-tier models, native on Windows and macOS, and it markets itself as undetectable. But documented "caught" reports exist on forums like TeamBlind (a Meta phone screen, flagged after repeated screen-switching) and HackerRank, plus reports of lag and crashes. Pricing is a reported ~$899 one-time "lifetime" that buyers say swings between $650–$1,799, and it's non-refundable with refund requests denied. Coding-only, and weak on behavioral rounds.
7. Interview Coder
A coding-interview-only overlay (macOS/Windows); the current 2.0/3.0 is a relaunch under new ownership. Reviewers report ~20s latency and solutions that failed test cases, documented CoderPad detection (users "blacklisted"), and on macOS, Zoom's default capture can see the overlay. Reported pricing ~$299/mo or ~$799 lifetime, with no stated refund policy. See Assistly vs Interview Coder.
8. LeetCode Wizard
Bills itself openly as a "cheating app" for coding interviews (Windows/macOS/Linux, plus a web-view mirror to a second device). Its creator called it a "fairly simple ChatGPT/Claude wrapper" on Hacker News, and — to its credit — the vendor's own docs admit some screen-share software can bypass hide mode, recommending you read answers off a separate phone (reviewers find this awkward). Reported €49/mo ($58), far pricier than legit prep like LeetCode Premium ($13/mo) or NeetCode ($10/mo). Coding-only, with real disqualification risk.
9. Interview Solver
A coding-interview overlay (macOS/Windows) with a phone "Companion Mode" and an iOS app — a reasonable idea for reading answers off a second device. But reviewers say it's not truly real-time (mainly transcribes, with a manual trigger), report lag/freeze/crash on hard questions, inconsistent code, and a clunky UX that eats screen space. Reported pricing ~$39–49/mo with a 10-message free tier. Coding-only.
Comparison table
| Tool | Capture exclusion | Renamable to dodge process scans | Latency (reported) | Scope | Reported price |
|---|---|---|---|---|---|
| Assistly | Native, all plans | Yes | Low / streaming | Interviews, meetings, sales | $14.99/mo flat |
| Cluely | Gated to top tier | No | 5–10s+ | Broad + enterprise | ~$20 / ~$149.99/mo |
| LockedIn AI | Extension visible | No | 4–5s | Interviews, meetings | ~$49.99/mo |
| Final Round AI | Browser detectable | No | Laggy | Job suite | ~$99–149/mo |
| Sensei AI | Browser, caught | No | Sub-second | Interviews | ~$24–89/mo |
| Ultracode | "Caught" reports | No | Lag/crashes | Coding | ~$899 lifetime |
| Interview Coder | Zoom can see it | No | ~20s | Coding | ~$299/mo |
| LeetCode Wizard | Docs admit bypass | No | n/a | Coding | ~€49/mo |
| Interview Solver | Overlay | No | Not real-time | Coding | ~$39–49/mo |
Pricing and capabilities change — always verify on each vendor's own site.
The bottom line
Detection is three problems, and most tools only solve one. The ones that gate invisibility behind a $149 tier, run in a browser tab, or show up by name in Task Manager are solving it halfway. Assistly is the only one here that ships OS-level capture exclusion on every plan and lets you rename the app to beat process scans — at a flat $14.99/mo with no premium undetectability upsell.
Use it honestly, within the rules of your call, and it'll keep you prepared and present without putting you in the frame.
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