Build online. Demo in Paris.
Join Paris builders for a community hackathon ahead of DevDay Exchange. Create a project with Codex or the OpenAI API, then join an evening of demos, judging, and conversation.
Compete for one of 10 tickets to the official DevDay Exchange in Paris on 28 October.
How it works
24–26 October · online build weekend
Join the online kickoff on 24 October at 10:00 AM, Paris time, and meet fellow builders.
Come with a team or work solo. There will be time to form teams at the kickoff. Teams can have up to 4 people.
Build with Codex or the OpenAI API
26 October · Demo night
Present your project in a short demo with Q&A.
