US tech giant Nvidia will invest up to $100bn (£73bn) in OpenAI, the firm behind ChatGPT, the companies announced.
Nvidia said it will supply high-performance chips needed for the processing power required by artificial intelligence (AI), of which OpenAI is a specialist.
Described as a "strategic partnership" by Nvidia, it is the latest move by two high profile tech firms in the global AI race, where China is an emerging rival.
The announcement comes after a series of high-profile investments by Nvidia, including a $5bn investment in Intel and a £2bn investment in the UK's AI sector.
Nvidia said its latest investment will go towards growing data centres for OpenAI's "next-generation AI infrastructure".
