Before the contest
themes announced
Themes drop a week ahead (“Next: AI Agents”). Teams of 1–4 register, and a solo division runs alongside the team division.
What a Battle
looks like
Every two weeks, the same five projects and the same clock for everyone themes ahead, ten hours to ship, live scoring, final judging.
Let the Battle begin
five projects revealed
Five projects revealed to everyone at once — brief, acceptance criteria, point values. You see them, the clock starts.
10 hours of building
ship & score live
Build in your IDE, scaffold with the CLI, submit as you finish. Provisional scoring in under 60s moves the leaderboard live.
Final submission countdown
final judging
Submissions close. Deeper AI judging over two hours can adjust tiers, then the leaderboard locks and rating changes apply.
Compete
Build Battles. Five projects. Ten hours. One global rating.
Every two weeks, a new contest. Five random projects revealed at start. Ten hours to ship as many as you can with your team. The AI Judge scores you live, your rating moves with the leaderboard, and the top auto-qualifies for premium hackathons.
Live leaderboardAI Agents · Battle #12
1kaizenGrandmaster2360
2shipfastGrandmaster2230
3nova_devMaster2015
4rinMaster1960
5byteforgeArchitect1720
6mochiArchitect1580
7delta_xSenior1370
One rating.
Built from everything you ship.
Every Build Battle, every Certify project, every hackathon, not a count of events joined, but a measure of how well you've shipped across all of them.
Top tier
Grandmaster
world-class shipper
2200+
rating
Master Builder
top 5% globally on a track
1800–2199
Architect
Gold-tier on most submissions
1400–1799
Senior Builder
consistently shipping working projects
1000–1399
Builder
getting started, learning the format
0–999
Competitive coding, for the AI era
Competitive programming gave a generation of coders a place to show up every weekend, solve the same problems under the same clock, and watch their rating climb. It turned practice into a sport.
But the game changed. Building today is less about algorithms on a whiteboard and more about shipping real software with AI. Build Battles bring that same arena to this era: a fresh contest every two weeks, judged on what you actually ship.
The ratings compound. The leaderboard becomes the resume.
For sponsors
Sponsor a Build Battle
Back a themed Battle and put your stack in front of ranked, motivated builders live and shipping against your brief.
- ✓Theme a Battle around your stack and challenges.
- ✓Your API in front of ranked, highly motivated builders.
- ✓Prize pool plus your brand on the live leaderboard.
FREQUENTLY ASKED QUESTIONS
LOOPS HOUSE
Wake the cat. Start a project.
