OpenAI has acquired patent assets from AI chip startup Rain AI after earlier negotiations to buy the company ended without an agreement, according to The Information.
Summary
- OpenAI acquired some Rain AI patents, but the financial terms and number of assets were not disclosed.
- Earlier negotiations for a complete takeover failed to produce a deal, leaving Rain AI close to shutting down.
- Rain AI developed energy-efficient chips for AI workloads and previously secured backing from Sam Altman.
- The transaction expands OpenAI’s hardware assets as advanced computing capacity becomes a strategic priority.
OpenAI buys Rain AI patents after failed takeover
OpenAI purchased some of Rain AI’s patents after the companies were unable to complete a broader acquisition, The Information reported. Neither company has publicly disclosed the price, the number of patents transferred, or the technologies covered by the transaction.
Rain AI has nearly ceased operating following the failed takeover talks, according to the report. Most of its employees have also left the startup, although it remains unclear whether any former Rain AI staff joined OpenAI as part of a separate arrangement.
The deal allows OpenAI to obtain selected intellectual property without assuming ownership of the entire company. It may also give the ChatGPT developer access to chip designs or related research that could support its work on AI computing infrastructure.
However, OpenAI has not explained how it plans to use the patents. Any connection between the acquired assets and a future OpenAI chip remains unconfirmed.
Rain AI pursued energy-efficient AI chips
Founded around eight years ago, Rain AI worked on specialized processors designed for artificial intelligence workloads. Its technology focused on lowering the energy and computing costs of training and running AI models.
Rain developed what it called neuromorphic processing units, or NPUs. The company sought to build chips that reproduced some features of the human brain while supporting both AI training and inference.
Rain’s investors included Altman, who made a personal investment in the company. The relationship later drew attention because OpenAI also explored commercial arrangements with the startup.
In 2019, OpenAI signed a nonbinding letter of intent to purchase $51 million worth of Rain AI chips once they became available, according to documents previously reviewed by Wired. The agreement did not result in a completed chip purchase.
Rain later struggled to secure sufficient funding and commercial demand. Reports in 2025 said the company began exploring a sale after a planned $150 million Series B funding round fell through.
Patent deal adds to OpenAI’s hardware push
The Rain AI transaction comes as OpenAI seeks more control over the infrastructure used to develop and operate its models. Advanced AI systems require large numbers of accelerators, considerable electricity and extensive data center capacity.
Purchasing patent assets could help OpenAI bring additional chip expertise in-house or strengthen its position when working with external semiconductor companies. It could also prevent potentially useful technology from disappearing as Rain AI winds down.
The arrangement does not establish that companies backed personally by Altman automatically receive financial support from OpenAI. Instead, the limited patent purchase suggests OpenAI selected specific technological assets after deciding against acquiring Rain AI outright.
Altman’s investment makes the transaction relevant from a governance perspective, although the available reporting does not identify any conflict or describe his involvement in approving the deal.
US oversight expands alongside AI infrastructure
OpenAI’s hardware expansion is unfolding as Washington increases its focus on advanced AI systems and the infrastructure supporting them.
Crypto.news reported in late July that OpenAI and Anthropic were working with the Trump administration on a consistent federal review process for models with advanced cybersecurity or national security capabilities. Despite competing for customers, researchers and computing resources, both companies sought standards that would apply across the industry.
Under the federal framework, developers could provide designated “covered frontier models” to the government for evaluation for up to 30 days before releasing them to other trusted partners. The White House finalized a voluntary framework in early August, though questions remain about which models will qualify.
The Rain AI patent acquisition addresses a different part of OpenAI’s strategy, but both developments reflect the growing importance of U.S.-controlled technology, computing capacity and intellectual property. OpenAI has not announced whether the Rain patents will support an internal chip project, a licensing program or future partnerships.
