Last Updated: 19 July 2026 For OpenAI Build Week, developers and other creators have several days to make a working project with Codex and GPT-5.6. The event opened on July 13, 2026, and welcomes both new projects and work already in progress. Founders and students can also enter. Live sessions, Discord support and community events continue during the challenge. Projects are due on July 21 at 5:00...