Codex and ChatGPT Hackathon Barcelona

A full day building with Codex at Itnig Cafe, run as a community hackathon. A short introduction and Codex updates first, then building solo or in teams, closing with live demos and prizes. OpenAI engineers and experienced Codex users will be on hand to help, though no mentors are named. You can submit an idea or an existing Codex project on the registration form, and selected projects get showcased during the day. 10:00 to 17:00 on the Saturday, in Spanish, free. Already full, so registration is a waiting list, handled through Luma. Itnig Cafe, Carrer de Pujades 100, Sant Marti. Why go: a free Saturday with OpenAI engineers in the room is not something Barcelona gets often, and the demo slot is a real shot at feedback. Best for developers already shipping with Codex rather than people deciding whether to try it.