PayPal has announced the launch of USD.AI, a project utilizing its PYUSD stablecoin to fund AI infrastructure. The initiative aims to channel PYUSD into the AI sector, supporting on-chain funding for computational resources. Starting in early January, PayPal will offer a 4.5% interest rate on deposits up to $1 billion, encouraging adoption and investment in AI development. This project highlights a significant use case for stablecoins in real-world investments, bridging decentralized finance with corporate finance.