Interview copilot software comes in three architectures: desktop apps that run as a separate window and capture the computer's audio directly, browser extensions that hook into a web meeting tab, and web tools that need you to share a tab or a microphone with them. The architecture decides what the tool can hear, what it can keep out of a screen share, where your data goes, and how it behaves when the meeting app updates. This page compares the three, gives a ten-minute test to run before any real interview, and explains what to check about data handling.
Architecture comparison
| Desktop app | Browser extension | Web tool | |
|---|---|---|---|
| Hears the interviewer via | System audio capture on the whole computer | The meeting tab's audio | A shared tab or your microphone picking up speakers |
| Works with | Any meeting app, including native Zoom and Teams and phone audio routed to the PC | Web versions of meeting apps in that browser | Whatever you can share |
| Hears you via | Microphone | Microphone, sometimes | Microphone |
| Screen-share behavior | Can keep its own window out of shares and recordings | Lives inside the browser you are often sharing | Another tab or window, visible if shared |
| Breaks when | OS audio permissions change | The meeting site or browser updates | The share is stopped |
| Install | Download or app store | Extension store | None |
The trade-offs are discussed in more depth in desktop vs web AI interview assistants and Chrome extension vs desktop assistants.
How audio capture works
A desktop copilot asks the operating system for a loopback of whatever is playing through the speakers and, separately, for the microphone. Windows exposes this directly; macOS needs a screen-and-audio recording permission for the same effect. The captured audio is sent for transcription in short segments, the transcript is sent to a language model, and the answer comes back, in our case in about two seconds. Extensions and web tools get narrower access by design, which is why they only work inside a browser. The detail is in how AI interview assistants capture system audio, and the end-to-end pipeline in how real-time interview assistants work.
A ten-minute test before any interview
- Start a meeting with a friend on the platform the interview will use, with the copilot running.
- Have them ask three questions; confirm the captions appear and the answer arrives within a few seconds.
- Share your screen as you would in the interview and ask whether they can see the copilot window.
- Ask one two-part question and check the second part is captured.
- Speak over them once; see what the transcript does.
- Note the result and do not change anything about the setup before the real call.
Data handling to check
- Is audio stored, or streamed and discarded? Ours is streamed in short segments and not stored on our servers.
- Where does the transcript live? Ours is saved only in the Documents folder on your computer.
- Which model receives the text, and can you choose? Ours sends it to the model you pick.
- Does the tool join the meeting as a participant? A desktop window does not; some web bots do.
- What does sign-in require? Ours is an email link, with an account needed only for paid plans.
Where CoPilot Interview fits
CoPilot Interview is a desktop-architecture AI interview assistant for Windows 10 and 11 and macOS 12 or later, capturing system audio and the microphone, showing captions and a structured answer in about two seconds, with a window that can be kept out of screen shares and recordings; it is not an extension and not a meeting participant. The free plan gives 15 minutes a day of live help in sessions of up to 15 minutes, with AI mock interviews included. Run the ten-minute test with any tool before a real interview, and follow your employer's rules on whether live help belongs in the round.
Disclosure: CoPilot Interview is our product, so weigh what we say about it accordingly.
Frequently asked questions
What are the types of interview copilot software?
Desktop apps that capture system audio, browser extensions that hook into a meeting tab, and web tools that need a shared tab or microphone. The architecture decides what the tool can hear and how it handles screen sharing.
Why does a desktop interview copilot work with more meeting apps?
It captures the computer's audio output directly, so native Zoom, Teams, Meet and phone audio routed to the PC all work. Extensions only hear a browser tab.
Is CoPilot Interview a browser extension?
No. It is a desktop app for Windows and macOS that runs as a separate window and never joins the meeting.
How do I test an interview copilot before a real interview?
A ten-minute call with a friend on the real platform: three questions, a screen share, a two-part question, some cross-talk. Then change nothing.
Where does my interview audio go?
With CoPilot Interview, audio is streamed in short segments for transcription and not stored on our servers; the transcript is saved only on your computer; the text goes to the model you choose.
Rehearse the answer out loud
The browser demo runs 145 real interview questions across 10 tracks and shows a structured answer to compare with yours. Free, no signup.
Try a practice question