Does Karat Detect AI Tools or Screen Sharing? What Candidates Should Know in 2026

Karat has become a common gatekeeper for tech hiring, especially for roles that require a live coding interview. By 2026 the platform’s public documentation makes it clear what it can and cannot watch during a session. Understanding those limits helps you avoid accidental rule‑breaks and focus on what really matters: demonstrating your skills.

What Karat Actually Records

Karat’s interview flow typically includes three layers of capture:

• Audio/Video – The platform requests permission to record your webcam and microphone. The recording is stored on Karat’s servers and used for post‑interview review. It captures everything you say and any background sounds.
• Screen Share – When you click Share Screen, Karat receives a video stream of whatever window you choose. The stream is limited to the selected window; Karat does not receive a full‑desktop view unless you explicitly grant it.
• Code Editor – If you use Karat’s built‑in coding pane, every keystroke, cursor movement, and test run is logged. The logs are sent to Karat’s backend for real‑time analysis and later playback.

These are the only data sources Karat mentions in its developer docs and privacy policy. Anything outside those streams—such as clipboard contents or system‑wide activity—remains invisible to Karat.

Browser Focus and Tab Switching

Karat’s own coding environment runs inside a browser tab. The platform can detect when that tab loses focus, because the JavaScript that powers the editor listens for visibilitychange events. When you switch to another tab, the editor pauses the timer and may display a warning.

Key point: The focus detection works only while you are inside Karat’s editor. If you open a separate browser window for notes or a documentation site, Karat will not know about it unless you also bring that window into the shared screen view.

Copy‑Paste and Clipboard Access

Karat does not request clipboard permissions, and its UI does not include any code that reads the clipboard. Consequently, copying text from a résumé or a cheat sheet into the editor is not directly observable. However, the act of pasting will appear in the editor’s change log, just like any typed character.

Because the platform logs every edit, an interviewer can see that a large block of code appeared instantly, which may raise a flag if it looks out of context. The safest approach is to type or modify code incrementally, even if you prepared a snippet beforehand.

Proctoring Beyond the Screen

Karat’s proctoring is limited to the audio/video feed and the coding pane. It does not run a background process that scans your computer for other applications. What it can infer includes:

• Background noise – Sudden voices or loud sounds may be flagged as a possible distraction.
• Multiple faces – The facial detection algorithm can count the number of distinct faces in the video feed.
• Lighting changes – Drastic shifts may indicate that the candidate moved the camera.

These cues are used by Karat’s internal review team to decide whether a session needs further scrutiny. They do not provide any insight into the content of your notes, open documents, or external resources.

What Karat Does Not Detect

In short, Karat cannot spy on the rest of your computer. It can only see what you let it see: the shared screen window, the audio/video feed, and the edits inside its own editor.

Staying Within the Rules

Given the above, here are practical steps to keep your interview compliant:

1. Use the provided editor – Do all coding in Karat’s pane. If you need reference material, keep it on a second monitor that is not being shared.
2. Keep the camera and mic on – Turn off virtual backgrounds that obscure your face, and avoid muting unless instructed.
3. Avoid large paste blocks – If you must paste, do it in logical chunks and explain what you are inserting.
4. Practice aloud – Rehearsing your stories helps you speak naturally, reducing the chance of long pauses that might look suspicious. A tool like Call Assistant can help you practice the answer aloud and keep follow‑ups on topic while grounding the story in your resume.

Common Misconceptions

• "Karat can see my notes" – False. Notes are only visible if you share the window that contains them.
• "Karat detects AI‑generated code" – The platform does not run any code‑style detection model. It may flag unusually perfect solutions, but it cannot prove the source.
• "Switching tabs will end the interview" – Karat will warn you, but the interview can continue as long as you return focus promptly.

How to Practice This

How to practice this

1. Run mock interviews using Karat’s public practice rooms. Treat the shared screen as if it were a real interview and observe how focus warnings appear.
2. Record yourself with a webcam and microphone while solving a coding problem. Review the footage to see how long pauses and background noises look.
3. Use Call Assistant to rehearse answers to behavioural questions. It will keep the story grounded in your resume and help you stay concise, reducing the need for excessive screen switching.

Frequently Asked Questions

• Q: Does Karat record everything on my computer? A: No. Karat only records the webcam/video feed you grant it, the audio from your microphone, and any activity inside its own coding editor.

• Q: Can Karat see if I use ChatGPT on another device? A: Karat has no visibility into other devices or applications. It cannot detect external AI usage.

• Q: What happens if I accidentally share the wrong window? A: The interview may be paused while you correct the share. The shared content is stored, so it’s best to double‑check before clicking Share.

• Q: Are there any penalties for copying and pasting code? A: Pasting itself is not prohibited, but large, unexplained blocks can raise suspicion. Explain what you are inserting and why it fits the problem.

• Q: Does Karat flag background noise automatically? A: It may flag unusual sounds for human review, but normal ambient noise is usually ignored.