3alet Hackathon · 30–31 October 2026 · Novi Sad
Two days in Novi Sad, or online, as part of NTP Novi Sad's 3alet programme. Bring a team, build a system of AI agents on Mozaik, submit it by Saturday. Free to enter.
Oct 30–31
2026
$1,000
In cash prizes
48 h
Kickoff to submission
Free
To enter
Prizes
$1,000 in cash across the top three teams, and Mozaik Cloud Premium for the first five.
$500
$300
$200
Judges
The people reading every submission. More names are added as they confirm.
Co-founder and CEO, JigJoy
Co-founder and CEO of JigJoy and creator of Mozaik, an open-source runtime for AI agents.
Co-founder, JigJoy
Builds tools for running AI agents in production: Mozaik Cloud, baro, and the agent workflows used at JigJoy.
Product engineer, jam.dev
Spent the last 8 years building at startups, shaping products from scratch. Focuses on surfaces people interact with, using AI to push even the smallest interactions further.
SpaceXAI ambassador
AI-native software engineer and founder of jobeeflow.com.
Full Stack AI Engineer at Magure
AI engineer and Mozaik open-source contributor, passionate about building AI systems and developer tools.
Learn Mozaik
Mozaik is the TypeScript runtime for agents that work at the same time and never block each other.
Seven short lessons. From zero to a working team of agents.
Start the mini-course ↗The runtime, the cloud, the API. Quickstart first.
Read the docs ↗Projects to clone and take apart.
Open on GitHub ↗Venue
The on-site competition and the kickoff happen at the park. Teams get a desk, coffee and mentors within reach for both days. The online track follows the same schedule from anywhere.
Fruškogorska 1, Novi Sad
About the park ↗Sponsors
Last edition
The September edition ran fully online with daily.dev and Hyperskill. Every project is in the gallery.
Details
Any developer. Enter solo and we'll help you find teammates, or bring a team of up to four. Students and professionals compete together.
Both. The on-site competition is at Science and Technology Park Novi Sad; the online track follows the same schedule, the same theme and the same jury. You choose when you register.
A working system where several agents run at the same time, sharing state and coordinating with each other rather than handing off in a fixed sequence. There's one open brief, announced at the kickoff, not separate tracks.
No. Mozaik is JigJoy's open-source TypeScript runtime for concurrent agents. Everyone registered gets the docs, a starter template and a primer before the kickoff, and mentors during the event.
30–31 October 2026. Registration closes 27 October. On 29 October there is a multi-hour Intro to Mozaik stream: what it is, examples built step by step, your questions answered live. Kickoff and the brief on Friday the 30th at NTP Novi Sad (streamed for the online track), submissions close on Saturday the 31st, winners are announced a week later, on 7 November. Exact hours come with the schedule email.
The detailed judging criteria and the judging cards the jury fills in are published before the hackathon starts, so you know exactly what is scored. Expect weight on genuine use of concurrency: agents that actually run together, not a sequential pipeline in disguise.
Nothing. Free to enter, on site or online.
