​​Join us for a day of building with Codex together with our friends at UTS Startups, the largest early stage startup incubator in Sydney.

​​​​We’re bringing together 100 of Sydney's most ambitious builders — developers who already use AI coding tools daily and are comfortable shipping production-grade code.

​This is not an introductory workshop. Expect to move fast, build from scratch and publish what you build onto /r/codex. Spin up subagents & parallel tasks, use plugins, and leverage worktrees to operate at a higher level of velocity and ambition.

​Each builder will receive API credits and 1 month of ChatGPT Pro.
What will you build?

​​🥇 ​Prizes

​Prize pool of over ~200k USD in credits & subscriptions will be available.

​​Registration Details

​​Attendance is capped (maximum of 4 members per team) to keep the room high-signal & deeply hands-on.

​​​​Please note that due to venue capacity, registration is subject to approval.

​​​Kindly complete the registration form with your accurate details, as incomplete or inaccurate submissions will not be admitted.

​​Note: If you intend to participate as a team, all members must register individually and receive approval separately.​​

​​Build Directions

​The theme for the challenge and evaluation will be shared on the day.

​​Focus on ideas that wouldn’t be possible without Codex. Build with Codex, or on top of it (App Server, SDK, or your own abstractions).

​​If any of these directions resonate — 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 systems that reason across text, voice, and vision

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

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

​​Event details

​​📅 April 29 (Wednesday)
🕘 9:00 AM – 8:00 PM
📍 Location shared upon registration confirmation

​​Co-hosted with

​The home of Sydney's best emerging startups.