Nvidia’s proposed investment of up to $100 billion in OpenAI, aimed at supporting the training and operation of its newest AI models, has hit a roadblock amid internal doubts at the chipmaker.

This was disclosed in a report by the Wall Street Journal Friday, according to Reuters.

The company had announced in September that the deal would provide OpenAI with funding and access to advanced chips, crucial for sustaining its lead in the rapidly intensifying AI market.

The Journal, citing sources familiar with the matter, reported that Nvidia and OpenAI are reconsidering the future of their partnership.

Current talks now focus on a potential equity investment of tens of billions of dollars as part of OpenAI’s ongoing funding round.

According to the report, Nvidia CEO Jensen Huang has privately told industry contacts that the original $100 billion deal was non-binding and never finalized.

He has also reportedly criticized what he sees as a lack of discipline in OpenAI’s business operations and expressed concern over competition from companies like Alphabet’s Google and Anthropic.

“We have been OpenAI’s preferred partner for the last 10 years. We look forward to continuing to work together,” an Nvidia spokesperson said in an emailed statement to Reuters.

OpenAI did not immediately respond to request for comment.

Meanwhile, major tech companies and investors, including SoftBank Group Corp, are rushing to form partnerships with OpenAI, which is investing heavily in data centers.

Many see closer ties with the startup as a way to gain a competitive edge in the fast-growing AI race.