A real teammate in your coding interview, in real time

Codex Interview is the human-powered coding interview assistant. A trusted teammate joins your live coding pad, helps you reason through every problem in real time, and you keep the skill afterward — human-verified, never AI-guessed.

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Your Coding Pad

Shared With Your Partner

A real teammate, not a guessing AI

AI copilots hallucinate and fall apart on the hard questions. Codex is the human coding interview assistant: a trusted teammate joins your live coding pad, sees the same problem you do, and helps you reason through it in real time — human-verified, never hallucinated, and it runs openly beside Zoom, Meet, and CoderPad. You keep the skill afterward. Just install the desktop app and invite whoever you trust before you start.

How it works?

Human teammate vs. AI copilot

A copilot only helps if it's right when it counts. Here's how a real teammate compares to the AI-copilot category.

	Codex (human)	AI copilots
Answer accuracy	A real engineer verifies the solution before you type a line	Confidently wrong the moment the problem isn't textbook
Interviewer follow-ups	Adapts live as the interviewer probes your reasoning	Can't follow the conversation happening in your room
Price	$29 one-time Day Pass — no subscription	$39–$299/mo, billed monthly

See the full comparison

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eval-rpn.js

Live

1function evalRPN(tokens) { // LeetCode 150

2 const st = []

3 const ops = {

4 "+": (a, b) => a + b, "-": (a, b) => a - b,

5 "*": (a, b) => a * b, "/": (a, b) => (a / b) | 0,

6 }

7 for (const t of tokens) {

8 if (t in ops) {

9 const b = st.pop(), a = st.pop()Priya

10 st.push(ops[t](a, b))

11 } else st.push(+t)

12 }

13 return st.pop()You

14}

Every keystroke, cursor, and message syncs instantly between you and your teammate.

Demonstration

This video will show you how Codex Interview works in action. You can also try it out yourself by downloading the app and running it on your machine.

Which platforms does Codex Interview support?

Codex Interview runs as a separate desktop app alongside your call, so it works reliably across these browser-based meeting platforms. Below is an up-to-date list of platforms where Codex Interview performs reliably. We recommend running through our basic checks before your actual interview to make sure everything works.

Codex Interview works with Zoom. Make sure you've completed our screen sharing setup so your pad stays visible on the call.

We've thoroughly tested this and can confirm it works perfectly as long as you pass these basic checks first. Curious how the collaboration works under the hood? Check out our behind-the-scenes explanation - we've laid out everything in detail.

Heads up! The latest Chime desktop app isn't playing nice with our tool right now. Your best bet is to ask your interviewer for a browser link instead - that way you'll get the full experience. If you have to use the desktop app, we can't guarantee everything will work as expected.

Command Palette

Use the command palette to quickly access all of Codex's features.

Hide/Show Window

Hide or show Codex Interview

Move Window

move the window around your screen without touching the mouse

Refresh Window

Refresh the Codex Interview application

Quit the Application

Quit the Codex Interview application

Find a plan

One-time passes · No subscription · No auto-renewal

Free

Unlimited local pads

Unlimited coding pads
Multi-language syntax highlighting
Code execution

free forever

Get started

Day Pass

24-hour session pass

Real-time collaboration
Everything in Free
Live help from a trusted teammate
Screen sharing
History and persistence
24/7 customer support

Secure checkout powered by Stripe.

$29

one-time · 24-hour access

Get started

Codex Enterprise

For large teams

Boost productivity with our Business and Enterprise⁠ plans.

Unlimited pads and fully access to your database, workspace and infrastructure.

Enterprise-grade security, admin controls, SAML SSO, and compliance with GDPR and CCPA.

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Frequently Asked Questions

Here are some common questions about Codex Interview.

Yes, Codex Interview is free to try it out, feel free to download and use it. Each user can create two rooms for free, and you can invite your friends to join the room during 6 hour sessions. If you want to create more rooms, you can subscribe to our pro plan.

Codex Interview currently supports a wide range of programming languages, including JavaScript, Python, Java, C++ and Go. You can find the full list of supported languages in the documentation.

Codex Interview creates a real-time collaborative coding pad. A trusted teammate joins your Codex pad from anywhere and helps you through each problem live—real human answers, no AI guesswork.

Yes—Codex Interview is built with security in mind. All data is encrypted both in transit and at rest, and we enforce strict access controls so that only people you explicitly invite can view or join your workspace.

If you have any questions or need help, you can reach out to our support form in the dashboard. We also have a community forum where you can ask questions and get help from other users.

Take the short way.

Download and use Codex Interview today!

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