OpenAI Claims Math Breakthrough Amid Credit Dispute, While US Battery Storage Hits Record High

### OpenAI's Mathematical Breakthrough and Attribution Controversy OpenAI has announced that its AI agents solved one of the most significant open problems in mathematics. While normally considered a major milestone, the announcement has been accompanied by accusations that OpenAI failed to credit researchers whose AI-assisted work contributed to the solution. The situation highlights a potential turning point in mathematics, where AI models are becoming essential for solving complex problems. However, the immense resources required to train such models may restrict breakthroughs to a small number of frontier AI companies, raising questions about the future role of human mathematicians. ### Record Energy Storage Capacity in the US In energy news, battery installations in the United States reached a new high in the second quarter of 2026, with 20.2 gigawatt-hours of new capacity online. This volume is sufficient to power approximately 600,000 homes daily. The surge is driven by declining battery costs and an increasing demand for grid storage as renewable power integration grows, impacting grid-scale and residential markets differently. ### Stealth Robotics Venture in San Francisco Meanwhile, 31-year-old researcher Danijar Hafner is developing a new robotics venture in San Francisco's SoMa district. Building on his long-standing work with world models, Hafner is focusing on enabling AI agents to navigate environments they have not encountered during training, using humanoid hardware suspended in his open workspace.