According to Sam Altman on Twitter, OpenAI will postpone the release of its anticipated open-weights model to later in the summer of 2025, rather than June. Altman stated that the research team achieved an unexpected and significant breakthrough, necessitating additional development time. This decision signals major advancements in AI model transparency and open-source accessibility, which could reshape the competitive landscape for enterprise AI solutions and third-party developers (Source: @sama, June 10, 2025).