ChatGPT maker OpenAI has received $110 billion in funding from Amazon, SoftBank and Nvidia, putting the technology company’s pre-money valuation at $730 billion.

Amazon is leading the trio of tech heavyweights in commitments, putting up $50 billion, followed by $30 billion each from Nvidia and SoftBank, said OpenAI co-founder and CEO Sam Altman on Friday. Other investors are anticipated to join as the funding round progresses.

Amazon will start with an initial $15 billion investment and will invest another $35 billion in the coming months under preset conditions.

“These partnerships expand our global reach, deepen our infrastructure, and strengthen our balance sheet so we can bring frontier AI to more people, more businesses, and more communities worldwide,” he wrote.

Altman said that ChatGPT has more than 900 million weekly active users, and more than 50 million consumer subscribers.

“We are entering a new phase where frontier AI moves from research into daily use at global scale,” he said. “Leadership will be defined by who can scale infrastructure fast enough to meet demand, and turn that capacity into products people rely on. This funding and these partnerships let us do both, and move faster on our mission to ensure AGI benefits all of humanity.”

OpenAI said it is also expanding its partnership with Nvidia.