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OpenAI Build Week: A Global Hackathon Tour

OpenAI's Build Week focused on GPT-5.6 and Codex, with the Codex Ambassadors program rapidly expanding to 60 cities worldwide to host hackathons.

2026-07-10 ~ 2026-07-21 · 6 episodes · 27 posts

Episode 1 · OpenAI Announces Build Week Focusing on GPT-5.6 and Codex (2026-07-10, 12 posts)

OpenAI announced a week-long Build Week event starting July 13, inviting global developers to participate. The event will center around GPT-5.6 and Codex, encouraging developers to bring their backlogged ideas to life using these tools.

Key Details and Schedule

During the event, OpenAI will launch a global challenge and host over 40 online and offline community events across more than 40 cities worldwide (covering Asia, Europe, the Americas, etc.). To assist developers, two live streams are scheduled: the first on July 13 at 10:00 AM PT, featuring a hackathon overview and live demos of GPT-5.6 and Codex; the second on July 14 at 11:00 AM PT, focusing more on actual workflows, live support, and showcasing projects built by global developers.

Local Community Events

In addition to the online streams, local offline events are being actively organized. For instance, an in-person meetup will be held in Buenos Aires, Argentina (participants are advised not to register for both online and offline to avoid taking up extra spots). Furthermore, cities like London, Singapore, and Salt Lake City have also confirmed local event sessions.

Episode 2 · OpenAI Announces Build Week and Builders Lounge in Berlin (2026-07-10, 4 posts)

OpenAI is hosting a 5-hour offline Build Week in Berlin next Wednesday, featuring a mini-hackathon and demo night. The OpenAI team will also attend the Builders Lounge to connect with developers.

Episode 3 · OpenAI Build Week Tokyo Gathers 100 Developers (2026-07-18, 5 posts)

OpenAI recently hosted its Global Build Week offline event in Tokyo, attracting a large number of developers and entrepreneurs. The event featured technical exchanges and project demonstrations, reflecting OpenAI's active efforts to build its global developer ecosystem and offline community.

Event Details

According to @gabrielchua, @avec_alan organized a Build Week meetup last Friday with about 100 builders in attendance. The event included technical sharing sessions by @reach_vb, Julien Simiand, and David Mercklé. Photos posted by @paw_lean show a packed venue with participants working on their laptops, a "Welcome to OpenAI Build Week" banner, and an active atmosphere featuring community hashtags like #BuildInPublic and #Shipaton.

Project Showcase

During the event, developer @kanagawa_ido won second place with a web application designed to alert users when acquaintances are nearby without using facial recognition technology. The developer emphasized that the project successfully balanced user privacy and portrait rights, delivering a functional prototype within a limited timeframe.

Episode 4 · OpenAI's London Codex Event Draws Massive Developer Crowd (2026-07-20, 2 posts)

OpenAI hosted a highly successful offline Codex event in London, attracting a massive crowd of developers. Participants spent the day collaborating on project deliveries, aided by a great community atmosphere and free Codex credits.

Episode 5 · OpenAI Build Week 2026 Hosts Multi-City Hackathons (2026-07-20, 2 posts)

OpenAI Build Week 2026 is hosting hackathons and workshops across multiple cities. The Hyderabad event attracted over 100 participants in 40+ teams, showcasing top innovative projects.

Episode 6 · OpenAI Codex Ambassadors Reach 60 Cities Globally (2026-07-21, 2 posts)

During Build Week, OpenAI's Codex Ambassadors expanded globally, bringing the event to approximately 60 cities with over 60 events in just seven days. The initiative highlights the highly international and active nature of the ambassador community.