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

​​​We’re bringing together 100 of the 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 something new from scratch or push an existing open-source project further with 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?

​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

​No fixed theme — just ambitious builds.

​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

​​​🥇 ​Prizes

​​To be revealed! Prize pool of over 100k USD in credits & subscriptions will be available.

​​​Event details

​​​📅 April 16 (Thursday)
🕘 9:00 AM – 8:00 PM
📍 Location shared upon registration confirmation

​​​Co-hosted with GrowthX.club

​​GrowthX gives you access to learn & implement AI into your work. You get access to learn from top AI experts through online live sessions & build agents through in-person events. Join 5,000+ AI leaders from the world's top product companies. Learn more here