Does an AI interview assistant need a browser extension?

If you are choosing an AI interview assistant, you may assume it must be a browser extension, the way many web tools are. It does not have to be, and this section explains why. In short, the one thing an interview assistant needs, hearing the interviewer, can come from the operating system rather than from inside a browser tab.

A browser extension can only see what happens inside a browser tab. That is a real constraint during interviews, because the Zoom and Microsoft Teams desktop apps that many candidates and recruiters use are not browser tabs at all. An extension also lives in the browser's permission model and can be disabled by a managed profile.

SubcueAI gives you two ways to run live assist, and you pick the one that fits the call:

• The native desktop app for macOS and Windows captures dual audio, both the interviewer's voice from system output and your microphone, so it follows a Zoom, Google Meet, or Microsoft Teams call whether you join from the desktop client or the browser. It draws a floating overlay on your own screen.
• The browser extension adds a Side Panel that does live assist for calls running in a Chromium browser tab such as Chrome or Edge. It captures the meeting tab's audio only, the interviewer, and does not transcribe your microphone. The Firefox build is for mock practice only.

Neither surface joins your meeting as a bot, and neither injects a content script into the meeting page, so no extra participant appears in the call. A setup walkthrough for both is on the tutorial page.

Choosing a native app or a tab-audio extension changes capture and compatibility, but it does not make any assistant universally invisible. Be realistic about these cases:

• If you are asked to share your screen and the overlay or Side Panel is on that screen, it is visible.
• If the interview is recorded on the interviewer's side, your spoken answers are recorded as usual.
• Proctored exams and company-managed devices with monitoring software are out of scope; do not try to use an assistant there.

More on these boundaries is on the security page.

The real question is not whether a tool is an extension, but whether it covers where your interview actually happens. A backend engineer interviewing for an L5 role at a public cloud vendor might take the system-design round on the Zoom desktop client and a coding round in a browser-tab session; the desktop app covers the first, and the extension Side Panel covers the second. Ask each tool the following:

• Is there a native app, a browser extension, or both? More surfaces cover more meeting setups.
• Does it join the meeting as a bot, or run locally? Local overlays and Side Panels do not appear in the participant list.
• Does it capture system audio, or only a browser tab? Tab-only tools miss desktop meeting clients.

A side-by-side overview is on the best AI interview assistant page, and the full library is at answers.