OpenAI Build Week Community Hackathon Brussels

Sat 18 – Sun 19 Jul 2026 · Brussels

Community-run local weekend of a global OpenAI Codex build challenge, with mentors and local pitching.

When

Sat 18 – Sun 19 Jul 2026

Where

WAT, Rue Volta 6A, 1050 Ixelles, Brussels

Organised by

Hack-Nation and North Star, in partnership with OpenAI Build Week

Format

In person

Who can join

Open to all

Language

English

Themes

AI, Codex, agents