Overview

• CEO Sam Altman announced the second delay in four weeks and said OpenAI needs more time to review high-risk areas in the model’s behavior.
• Unlike GPT-5, the open-weight model will be downloadable and runnable locally, but its weights will be irreversible once released.
• VP of Research Aidan Clark called the model’s capabilities phenomenal while stressing that OpenAI’s bar for an open-source release remains high.
• Chinese startup Moonshot AI introduced Kimi K2 this week and rivals xAI, Google DeepMind, and Anthropic are investing heavily in competing open models.
• OpenAI aims for reasoning performance on par with its o-series and has not provided a new timeline for the open-weight model’s debut.