OpenAI has raised $40 billion at a $300 billion valuation, partnering with SoftBank Group to scale its AI infrastructure and research. The company, serving 500 million weekly ChatGPT users, announced plans to release its first open-weight language model since GPT-2, focusing on reasoning capabilities. CEO Sam Altman revealed the model will undergo evaluation through OpenAI's preparedness framework before launch, with developer feedback sessions planned globally. The initiative aims to facilitate self-hosting options for developers, large companies, and governments.