OpenAI shared an invite to New York’s GPT-6 Astra hackathon

OpenAI’s developer account shared invitations on September 4 to a New York City hackathon and a San Francisco build event. Cerebral Valley listed the NYC hackathon for September 10, 2026, focused on building with GPT-6 Astra. For San Francisco, OpenAI encouraged developers to bring an idea or existing prototype, build alongside local developers, get hands-on support from its team and work toward a live demo.