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FollowingAbstract
OpenAI has acquired some patent assets from AI chip startup Rain AI after negotiations between the two parties on a comprehensive acquisition failed to reach an agreement. Financial terms and the number of assets were not disclosed.
OpenAI purchases Rain AI patents after failed acquisition
OpenAI reportedly purchased some of the company's patents after failing to complete a full acquisition of Rain AI. Neither party publicly disclosed the transaction price, the number of patents transferred or the technical fields involved. Reports said that after the acquisition negotiations failed, Rain AI almost stopped operating and most employees left, but it is unclear whether any former Rain AI employees joined OpenAI in a separate arrangement. The deal allows OpenAI to obtain specific intellectual property rights without assuming ownership of the entire company, and could also give the ChatGPT developer access to chip designs or related research that can be used to support its AI computing infrastructure. However, OpenAI has not explained how it plans to use the patents, and any connection between the acquired assets and future OpenAI chips has not yet been confirmed.
Rain AI is committed to energy-saving AI chips
Rain AI was founded about eight years ago to develop dedicated processors for artificial intelligence workloads. Its technology focuses on reducing the energy and computing costs required to train and run AI models. The company has developed the so-called Neuromorphic Processing Unit (NPU), which aims to build chips that can replicate certain characteristics of the human brain while simultaneously supporting AI training and reasoning. Rain AI's investors include Altman, who personally invested in the company. The relationship later attracted attention as OpenAI also explored business arrangements with the startup. In 2019, OpenAI signed a non-binding letter of intent to purchase US$51 million worth of products after the Rain AI chip was launched, but the agreement ultimately did not lead to actual chip purchases. Since then, Rain AI has encountered difficulties in obtaining sufficient funding and commercial needs. Reports in 2025 said the company began exploring a sale after a planned $150 million Series B financing failed.
Patent deal helps OpenAI hardware layout
The Rain AI deal comes as OpenAI seeks more control over its model development and operating infrastructure. Advanced AI systems require a large number of accelerators, considerable power, and huge data center capacity. Buying patented assets may help OpenAI bring additional chip expertise internally or strengthen its position when working with external semiconductor companies, while also preventing useful technology from disappearing when Rain AI is phased out. This arrangement does not mean that companies personally supported by Altman will automatically receive financial support from OpenAI. Instead, limited patent purchases suggest OpenAI chose specific technology assets after deciding not to fully acquire Rain AI. Altman's investment made the deal relevant at the governance level, but existing reports did not point to any conflicts of interest or describe his involvement in approving the deal.
U.S. regulation strengthens as AI infrastructure expands
OpenAI's hardware expansion comes amid Washington's increased focus on advanced AI systems and their supporting infrastructure. OpenAI and Anthropic are reportedly working with the Trump administration to establish a consistent federal review process for models with advanced cybersecurity or national security capabilities. Despite competition for customers, researchers and computing resources, both companies are seeking uniform standards that apply across the industry. Under the federal framework, developers can submit designated "coverage cutting-edge models" to the government for evaluation before releasing them to other trusted partners, for a maximum evaluation period of 30 days. The White House finalized a voluntary framework in early August, but questions remain as to which models qualify. Rain AI's patent acquisitions involve different parts of OpenAI's strategy, but both reflect the growing importance of U.S. controlled technology, computing power and intellectual property. OpenAI has not announced whether Rain's patents will be used to support internal chip projects, licensing plans or future collaborations.
