OpenAI Codex Hackathon - Singapore

​Join us for a day of building with Codex together with our friends at Lorong AI.

​This event is designed for developers who already use AI coding tools daily and are comfortable shipping production-grade code. No prior experience with Codex is required, but this is not an introductory workshop. Expect to hit the ground running fast.

​Build something new from scratch or push an existing open-source project further with Codex. Spin up parallel tasks, use Skills, and leverage worktrees to operate at a higher level of velocity and ambition.

​Attendance is capped at 100 builders (max 4 members per team) to keep the room high-signal and deeply hands-on.

​Build Directions

​If any of these ideas excite you — apply.

​🔹 Agentic Coding — Build developer tools that maximise leverage from Codex as an AI coding agent.

​🔹 UX for Agentic Applications — Design AI-native interaction patterns and product flows.

​🔹 Multimodal Intelligence — Create experiences that reason and interact across multiple modalities.

​🔹 Domain Agents — Go deep on vertical agents with real-world constraints.

​🔹 Building Evals — Build tooling to measure, debug, and systematically improve agent performance.

​Prizes

• ​🥇 1st Place: $30,000 USD in API credits

• ​🥈 2nd Place: $15,000 USD in API credits

• ​🥉 3rd Place: $5,000 USD in API credits

​In addition, all members of the top five teams will receive one year of ChatGPT Pro.

​Event details

​📅 Saturday, February 28
🕘 9:30 AM – 8:30 PM
📍 Location shared upon registration confirmation

​Co-hosted with Lorong AI

​Lorong AI brings together government, industry, and research to build Singapore's AI ecosystem. A collaborative hub for AI practitioners connect, innovate, and shape the future of AI in Singapore through curated programs and a supportive community.