What to look forward to
London builders will spend a day creating useful or fun projects with Codex and OpenAI, forming teams, testing workflows, and presenting demos for prizes including DevDay Exchange tickets, API credits, and ChatGPT Pro subscriptions. The event will feature Andy T, Codex Ambassador for London and the Outpost Team, with team building, judging, and awards throughout the program.
Inside the event
DevDay Exchange London: Community Hackathon Join us for a day of building with Codex and OpenAI, ahead of DevDay Exchange London. We’re bringing London builders together to meet, find teammates and make something useful or fun. Spend the day working on an idea, trying out new workflows and sharing what you’ve built with the London community. How it works Come with a team or find people to build with when you arrive. Bring your laptop and an idea you want to try. We’ll start with coffee, introductions and the opening brief, then get straight into building. There’ll be food and drinks throughout the day, time to meet other builders, and demos, judging and prizes to finish + we have a few exciting surprises to keep you entertained while your agents working ;) Prizes 🥇 + 🏆 Tickets to the official DevDay Exchange London + 🏆 OpenAI API Credits + 🏆 ChatGPT Pro Subscriptions Judges TBA The day 09:00 — Arrivals, coffee and team finding. 10:00 — Opening brief. 11:00 — Build, with lunch at 13:00. 17:00 — Submissions close, dinner and first-round judging. 18:00 — Final demos. 19:00 — Awards, photos and close by 19:30. Community Important Details Doors will close 9:30am and no entry will be permitted after this time due to security and venue constraints Max team size of 4 people The meetups demand is overwhelming, over 1,000+ registrations each. We will try to make sure as many people can attend as possible, space is limited. Andy T - Codex Ambassador, London & Outpost Team
Meet in London, UK
City view. The source has not supplied a venue; check the organizer for the exact location.
Open in Google Maps ↗Discovered through Cerebral Valley. Details come from the event listing; registration is managed by the organizer.
Last checked: Oct 27, 2026. Confirm current availability before making plans.