New Delhi, July 27 -- Nvidia is in discussions to provide around $250 billion in financial guarantees for OpenAI as part of a massive data centre initiative in southern Ohio, marking one of the largest financing efforts yet tied to the artificial intelligence boom in the United States.

According to a Wall Street Journal report citing people familiar with the matter, Nvidia's backing would help OpenAI lease a 10-gigawatt data centre campus being developed by SoftBank. The overall project, including the advanced AI chips required to power the facilities, could exceed $500 billion, making it the biggest data centre development announced so far.

The electricity required for the complex would come from a power project controlled by the US go...