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+# What happens when hackathon judging is a public benchmark (Hack the North edition)
+
+*Written by Francesco Bonacci — Reviewed by Parth Patel (HUD W25) — Sept 25, 2025*
+
+## Prologue
+
+Hack the North ran Sept 12–14 at the University of Waterloo. Official count this year: **1,778 hackers**, and a [Guinness World Record for the most people building interlocking plastic brick sculptures simultaneously](https://uwaterloo.ca/news/eweal-making-hackathons-fun-again-breaking-guinness-world-record).
+
+Our team arrived from Europe and the US one day before the hackathon, after a summer scattered post–YC X25, waiting for our O-1 visas. **HUD**’s founders Parth and Jay flew in from SF to help us run evaluations, and Michael and Parth from **Ollama** joined as co-sponsors.
+
+Our plan was ambitious: run the **first state-of-the-art Computer-Use Agents track**, score it on a public benchmark, and give the top performer a guaranteed YC interview. (Interview ≠ offer. YC didn’t judge.)
+
+The rest, as they say, was a 36h story worth telling—and a playbook worth sharing for anyone thinking about running or sponsoring this type of hackathon track.
+
+![hack-cua-ollama-hud](./assets/hack-cua-ollama-hud.jpeg)
+
+## The sign-up problem we had to invent
+
+We joined as a sponsor at the last minute, thanks to a push from our friend @Michael Chiang at Ollama—Waterloo alum, naturally. It’s kind of an open secret that UWaterloo turns out some of the sharpest hackers around (*no pun intended, HackMIT*). It was a bit of a scramble, but also great timing—our Agent framework had just finished a major refactor, with support for **100+ VLM configurations** now live. Naturally, we wanted to stress-test it at scale—and see whether teams could come up with SOTA-level setups. *This wasn’t a blank-slate, build-whatever-you-want kind of track.*
+
+From day one, though, we knew we’d have to fight for sign-ups. This was a niche track, and a guaranteed YC interview alone wouldn’t be enough to pull people in.
+
+Unfortunately, Hack the North (HTN) didn’t offer an interest form to help us estimate demand, which made capacity planning tricky—especially with early-stage infra. Stress-testing takes foresight, and multimodal language model usage is still costly (~1.5× to 3–4× the price of comparable text-only models).
+
+On top of that, we were discouraged from external promotion on [lu.ma](http://lu.ma). So we spun up our own sign-up page at **trycua.com/hackathon** and built ad-hoc Discord channels to share track details. We emphasized—repeatedly—that only students already accepted to Hack the North should register.
+
+*(Moral: the “measure-zero effect”—no matter how many times you say it, some people won’t see it. Plenty of invalid sign-ups still slipped through.)*
+
+Even so, having your own form is absolutely worth it: it gives you an **early funnel**, surfaces demand signals ahead of time, and—crucially—**lets you require platform sign-up before kickoff**. In our case, Hack the North didn’t provide Devpost access until the very end, so our form was the only way to build a working roster.
+
+Only a small trickle of sign-ups came through by the time the event kicked off—too few to plan around, but clearly the right kind of crowd. Several were already familiar with computer-use agents; one was even interning at Shopify, working on this space.
+
+## At the Sponsor Booth
+
+Day 0 on campus made the difference. We arrived a couple of hours early to collect swag shipments (around 1,200 stickers of our new **Cua-la** mascot, plus t-shirts and hats—always plan ~1.5× the estimated number of hackers!). After walking the sponsor floor and explaining the track at our booth, ~40 hackers signed up.
+
+**Moral:** sponsor booths are still the most effective way to recruit for a track.
+
+**Suggestions to maximize booth time (for HTN this is only ~24 of the total 36 hours):**
+
+- **Be unmistakable.** Run a mini-challenge and a visible giveaway. We offered 5 × $200 Anthropic credits as a lightning raffle and constantly advertised in HTN Slack. Shout-out to our neighbors at **Mintlify**, who dressed their teammate as a mint plant - memorable and effective.
+- **Create multiple touchpoints.** Hand out flyers and QR codes, and ask nearby booths to cross-refer. Big thanks to the YC team for flyer space and student connections - and to Michael (Ollama) for pointing visitors our way.
+- **Never leave the booth empty.** Keep someone at the booth at all times and rotate shifts. With four founding engineers on-site, coverage was easy. Even after hacking kicked off, the booth stayed a point of reference - and even then multiple participants DM’d us asking where to meet up.
+- **Students are organic DevRel.** Our runner-up, Adam, hung out with us at the booth, pulling more people in. Peer-to-peer energy creates the network effect you need!
+
+![hack-booth](./assets/hack-booth.png)
+
+*(Our Founding Engineer, Morgan, hangs out with students at the stand, while Adam (runner-up) hacks on the side.)*
+
+## 02:30 a.m. is still prime time at a hackathon
+
+Hack the North gives sponsors a 30-minute API Workshop during the early hours of the event—a perfect moment to shift from talking to building.
+
+Our slot landed at **2:30 a.m.** (*perks of the cheapest sponsor tier*). Thirty students showed up, energy surprisingly high. James, our new Founding DevRel Engineer, led the session and nailed it.
+
+**Our track rules were simple:**
+
+1. Build a Computer-Use Agent with the [Cua framework](https://github.com/trycua/cua)
+2. Benchmark the agent on [HUD](https://www.hud.so)
+3. Use [OSWorld-Tiny](https://huggingface.co/datasets/ddupont/OSWorld-Tiny-Public): a 14-task distillation of the full benchmark (~360 tasks, >1h)
+
+**Suggestions:**
+
+- **Leave something tangible.** We provided a Jupyter Notebook teams could run immediately.
+- **Narrow scope, strong starts.** The more focused the challenge, the more **robust starting points** you should provide.
+- **Want the details?** [Here’s the notebook we left participants](https://github.com/trycua/cua/blob/main/notebooks/sota_hackathon.ipynb).
+
+![hack-booth](./assets/hack-workshop.jpeg)
+
+*(Our CUA Workshop at 2:30 AM.)*
+
+## Making it possible to focus on the work
+
+If you’re an OSS framework, it’s tempting to have hackers self-host on laptops. **Don’t.** You’ll spend the workshop debugging setups instead of reviewing ideas.
+
+**Lesson learned:** within hours, we shifted to **cloud-only Sandboxes**. Payoff: consistent environments, faster starts, far less tech support.
+
+We provided:
+
+- **Credits:** $200 Cua Cloud + $200 HUD per team (manual top-ups for visible progress)
+- **LLMs/VLMs:** Anthropic assigned $50 per participant—tight for VLM iteration—so we added capped access under our org
+- **Pre-kickoff provisioning:** Platform sign-up auto-created projects, keys, and sandboxes
+
+**Takeaway:** every minute not spent on setup is a minute gained for iterating.
+
+## 12 Hours in the Hackathon
+
+**After the workshop buzz.** Morning interest was high, but Docker setup + requiring focus on a single track thinned the crowd. Most sponsor prizes are broad (“use our product and you qualify”), letting students stack tracks. Ours required commitment. Upside: those who stayed shipped sharper, higher-quality submissions.
+
+**The bell curve of submissions.** Most entries used *claude-sonnet-4-20250514*—proof that docs and public leaderboards ([OSWorld](https://os-world.github.io/#benchmark)) guide choices. Results clustered around the safe pick, with fewer pushing boundaries.
+
+**Who went beyond the baseline.** A few tried multi-agent/tool graphs. One standout—[**cuala**](https://github.com/YeIIcw/cuala)—was a clean reference: deterministic actions, verifiable state changes, callbacks for saving images and trajectories.
+
+**Bottom line:** Early excitement is easy; keeping teams engaged requires reducing friction and offering multiple entry points.
+
+### What broke (and why)
+
+We skipped a full end-to-end **Cua × HUD** dry-run. It showed.
+
+- Hackers ran out of inference credits. Desktop tasks are token-heavy. A full OSWorld run (200 max steps) for *computer-use-preview* (OpenAI Operator API) can cost >$600. Serious attempts: ~400k tokens × 14 tasks.
+- Python version/build mismatches surfaced, requiring debug time across both OSS repos.
+- Our Cua framework lacked a **Response Agent** to complete evaluation loops. Some runs stalled until patched.
+
+## Scoring and Results
+
+### Participation & Outcomes
+
+- ~**30** hackers gave the track a serious try; **5** crossed the finish line
+- All submissions were **solo**, mostly undergrads
+- Judging: OSWorld-Tiny on HUD, with Cua + HUD reruns to verify scores
+- Final leaderboard: [HUD Leaderboard](https://www.hud.so/leaderboards/ddupont/OSWorld-Tiny-Public)
+
+![hack-leaderboard](./assets/hack-leaderboard.png)
+
+*(Leaderboard on HUD)*
+
+### Winners
+
+**🥇 Winner — Ram**  
+- Devpost: https://devpost.com/software/sota-computer-use-agent-challenge  
+- Code: https://github.com/Ram-Raghav-S/cua/tree/ram  
+- Score: 68.3%
+
+**🥈 Runner-up — Aryan**  
+- Devpost: https://devpost.com/software/loopdeloop-computer-use-agent-sota-attempt  
+- Code: https://github.com/Tumph/cua  
+- Score: 55.9%
+
+**🥉 Special Mention — Adam**  
+- Devpost: https://devpost.com/software/cuala  
+- Code: https://github.com/YeIIcw/cuala  
+- Score: 42.1%
+
+![hack-winners](./assets/hack-winners.jpeg)
+
+*(Our finalists before the award ceremony)*
+
+## What We’d Keep
+
+- **Sponsor Hack the North again**
+- **Keep a visible, staffed booth**
+- **Publish a compact FAQ**
+- **Simple, transparent scoring**
+
+## What We’d Change
+
+- **Run a full Cua × HUD dry-run under load**
+- **Offer multiple on-ramps (evals, creative, RL)**
+- **Keep a private eval set for judging**
+- **Default to cloud sandboxes**
+- **Handle ops earlier (swag, signage, QR codes)**
+- **Reward generalization, not lucky runs**
+
+## Closing Thoughts
+
+Our first outing as sponsors wasn’t perfect, but it gave us a working playbook: **provision cloud early, keep scoring simple, always dry-run infra, and make the booth unforgettable**.
+
+If more hackathon tracks leaned on **public benchmarks**, weekends like this would produce fewer demos-for-show and more measurable progress.
+
+**P.S.** Huge thanks to the Ollama and HUD teams for co-sponsoring the track, and to our YC Partner Diana for offering a **guaranteed YC interview** as first prize.
+
+If you’re considering benchmark-first hackathon tracks, let’s talk—we’d love to sponsor a few in the Bay Area this year!
+
+![hack-closing-ceremony](./assets/hack-closing-ceremony.jpg)
+
+*(HTN Closing Ceremony — Cua Track Winner Announcement)*
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