Mock Interview Copilot by Zapx Labs

Educational · Interview practice

Mock Interview Copilot

A browser extension and desktop app that help you rehearse for interviews. They transcribe your mock interview, spot likely questions, and suggest concise answers grounded in study notes you provide.

Works in

  • Microsoft Teams
  • Google Meet
  • Zoom
  • Cisco Webex
  • Free, no subscription
  • No account, no server
  • No analytics or tracking

Prefer YouTube? Watch the demo there.

Add to Chrome Your browser Add to Edge Your browser

Free. Bring your own AI provider key — it never leaves your browser.
Prefer a native app? Download it for macOS, Windows or Linux.

Download the desktop app macOS · Windows · Linux

The same copilot as a native app. Listens to system audio, so it also works with the Zoom, Teams, Webex and Meet desktop apps.

How it works

Four steps, then you are practising

Everything runs in your browser. There is no backend to sign up for and nothing to configure beyond your own API key.

  1. Install (extension or app) and add your key

    Add the extension, then paste an API key from a provider you already use. The key is stored in your browser's local storage.

  2. Upload your study notes

    Drop in the notes and PDFs you are revising from. Suggested answers are drawn from that material rather than invented.

  3. Join a practice call and listen

    Start a mock interview in Teams, Meet, Zoom (web) or Webex. It transcribes the conversation and spots the questions being asked.

  4. Review the thread afterwards

    Read back the transcript alongside the suggestions, see where you hesitated, and rehearse the answers in your own words.

What you get

Built for practice, not for shortcuts

Bring your own keys

No server, no subscription. You supply your own AI provider API key. Keys, notes, and transcripts stay in your browser's local storage.

Grounded suggestions

Upload your own study notes and PDFs. Suggested answers are drawn from your material, not invented.

Private by design

No analytics, no tracking, no telemetry. Audio and text go only to the AI provider you configure.

Reads the shared screen

When a screen is shared, it can scan what is on it and answer questions about code, diagrams and images.

Your provider, your model

Works with OpenAI, Anthropic, Google, AssemblyAI, Deepgram and ElevenLabs. Use whichever you already hold a key for.

Practice, responsibly

Built for mock interviews and practice. Recording a meeting may need everyone's consent and may be regulated where you live.

Bring your own keys

Six providers supported

Pick one for transcription and one for answers, or use a single provider for both. You pay them directly at their own rates — Zapx Labs never sees a request.

Keys are entered once in the extension's settings and kept in local storage on your machine. Audio and text are sent only to the provider you configured, and to nobody else — the extension ships with no analytics, no telemetry and no backend of its own.

Use responsibly

Mock Interview Copilot is an educational practice tool. Only use it in mock interviews, practice sessions, and meetings where transcription assistance is permitted, and obtain any consent required by the participants and by law in your jurisdiction.