Road to Colosseum | Side-track Hackathon DEMO DAY

Got something you’ve been meaning to build? Bring it to Joi. 💻 Join 50–70 fellow builders for DevDay Exchange Community: Ho Chi Minh City — an afternoon of building with Codex, exchanging ideas, and showing what you’re working on. Whether it’s a tool that saves you hours at work, a prototype you want to test, or a side project you’re excited about, bring your laptop and make some progress with us. Build, connect, and share 🛠️ Build with Codex Spend focused time turning your ideas into something you can use. Work on your project, compare approaches, and exchange tips with other builders. 🤝 Meet your local builder community Get to know people building different things, share what you’ve learned, and find fresh perspectives on the problems you’re working through. 🎤 Demo your project Show us what you built, the problem it solves, and how you used Codex along the way. A work in progress is welcome — it doesn’t need to be a polished product. 🗳️ Vote for your favorite showcases Attendees will vote to select the top five showcases. Give fellow builders feedback and help celebrate the projects that stand out. ☕️ Take a break with Joi Enjoy complimentary drinks and tea break bites during the event. Grab something tasty, chat with fellow builders, and recharge between build sessions. ----- Who is this for? This session is for people using Codex to build — developers, students, founders, and people creating tools for their own work. Come ready to spend time building and take part in the community. Credits & showcase prizes The following credits and prizes are proposed and subject to OpenAI approval. We’ll update this page with confirmed support and eligibility details before the event. For each eligible attendee with verified on-site check-in, we’re requesting: $100 in Codex credits $50 in API credits For the top showcases, selected through attendee voting, we’re requesting: 🥇 1st place: $1,000 in API credits for the team + 1 year of ChatGPT Pro for each approved team member.

This meetup is hosted by Vy Nie. These meetups are hosted by members of Lenny’s Newsletter community, and are a great opportunity to meet new people, and have in-depth conversation about product and growth. There is a tab for free drinks. Learn more at LennysNewsletter.com/community. Drinks courtesy of PostHog. Give your agents product context. PostHog combines and stores your analytics, errors, replays, and business data so you and your agents can understand and act on it. Join us for an evening of meaningful conversations about building products, driving growth, and turning ideas into action. The meetup is free and open to anyone interested in product and growth. The format will be relaxed and participatory—no long presentations and no pressure. Come to connect, exchange experiences, ask questions, or simply listen and learn. Agenda 6:00–6:30 PM | Connect individually Arrive, grab a drink, meet other participants, and share what you are building or exploring. 6:30–6:40 PM | Welcome A short introduction to the community and the evening’s format. 6:40–7:30 PM | Connect in groups Join small, topic-based conversations about product, growth, experimentation, careers, or questions proposed by participants. We’ll begin by collecting topics from the room, with a few prompts prepared to help us get started. Choose the conversation that interests you most. You may stay with your group or move to another table at any time—there are no forced rotations. The goal is to let meaningful conversations develop naturally. 7:30–7:40 PM | Short break 7:40–8:20 PM | Spotlight and Q&A Hear short, practical stories from community members who would like to share an initiative, product experiment, approach, lesson, or challenge. If you have something you think the community would find valuable, you can prepare up to five short slides. Please contact Vy Nie in advance to request a speaking slot so that we can coordinate the agenda and prepare the projector. 8:20–8:50 PM | Connect as a com