OpenAI Nabbing Microsoft Customers, Fueling Rivalry

Last spring, drugmaker Amgen Inc. announced plans to buy Microsoft Corp.'s Copilot AI assistant for 20,000 employees.

- BLOOMBERG

Last spring, drugmaker Amgen Inc. announced plans to buy Microsoft Corp.'s Copilot AI assistant for 20,000 employees. It was a timely endorsement of the software company's multi-billion-dollar bet on generative artificial intelligence, and Microsoft touted its new Copilot customer in three separate case studies.

Thirteen months later, Amgen employees are using a rival product: OpenAI's ChatGPT.

Amgen expanded its use of ChatGPT earlier this year after seeing the technology improve and hearing from employees that it helped with such tasks as research and summarizing scientific documents.