// real-time coding interviews

Interviews that feel like pair programming.

One focused room: a shared editor with live cursors, sandboxed execution, chat, and an AI assistant that hints and grades. Built for real technical interviews.

5 languages/<100ms sync/isolate sandbox/ai evaluation
two_sum.py live
def two_sum(nums, target):
    seen = {}
    for i, n in enumerate(nums)Niranjan:
        if target - n in seen:
            return [seen[target-n], i]
        seen[n] = i
$✓ [0, 1]· 41ms · 4.0 MB
JAVA+PYTHON+JAVASCRIPT+C+++GO+LIVE CURSORS+SANDBOXED+AI EVAL+REPLAY+JAVA+PYTHON+JAVASCRIPT+C+++GO+LIVE CURSORS+SANDBOXED+AI EVAL+REPLAY+

[ 01 ] how it works

Link to live coding in seconds.

01

Open a room

Spin up an interview room, pick a language, and you are the interviewer. No setup, no installs.

02

Send the link

Your candidate joins from any browser — instantly synced into the same editor.

03

Pair, run, evaluate

Write code together with live cursors, run it in a sandbox, and let the AI assist and grade.

[ 02 ] capabilities

One room. Everything you need.

/collab

Real-time collaboration

Multiple cursors, presence and typing on a shared CRDT document — Docs-smooth, for code.

/sandbox

Isolated execution

Run 5 languages in a sandbox with CPU, memory and time limits. No network. No filesystem.

/ai

AI assistant

Generate problems and hints, then grade correctness, complexity and code quality.

/signals

Integrity signals

Paste, tab-switch and blur tracking, distilled into a live focus score for the interviewer.

/replay

Recording & replay

Every snapshot, message and run captured — replay the session like a commit history.

/editor

Real editor

Monaco with syntax, autocomplete and theming across Java, Python, JS, C++ and Go.

[ 03 ] faq

Questions,
answered.

No. They open the invite link in any modern browser and start coding immediately.

// ready when you are

Run your next interview here.

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CodeSync[AI]collaborative coding interviews