Run real coding contests online
Create a challenge, share a link, and let the best code win. No complex setup, no proprietary question banks — just a timer, a task, and real developers building real things.
What you get
Built for real contests, not toy examples
Real countdown timer
Set any time limit — 15 minutes to several hours. A visible countdown keeps energy high and submissions honest. When time's up, code auto-submits for everyone.
Instant invite links
Share a single URL. Participants click it, enter their name, and they're in — no accounts required to join a contest. Setup to live in under a minute.
Custom challenge tasks
Write any task you want — build a landing page, create a tool, clone a UI. There are no fixed question banks. You define what great looks like.
How it works
From idea to live contest in 3 steps
Create a contest
Name your challenge, write the task description, and set a time limit. Takes about 60 seconds.
Share the invite link
Copy the link and drop it in your team chat, email, or event page. Participants join instantly with just their name.
Watch the contest run
Participants get a browser-based editor with an AI assistant. When the timer hits zero, all submissions are locked and auto-submitted.
Who uses it
Perfect for your community
Hiring teams
Replace take-homes with a live coding session that shows how candidates actually build.
Bootcamps
Run weekly challenges to keep students sharp and give them something real to show on their portfolios.
Dev teams
Turn a boring Wednesday into a 30-minute contest that everyone talks about for the rest of the week.
Also worth exploring
Ready to run your first contest?
Free to start. No credit card. Your first contest is live in under 60 seconds.