Microsoft, a major investor since 2019, supports OpenAI through Azure and powers tools like Microsoft 365 Copilot with its models. However, tensions between OpenAI and Microsoft have been simmering in recent months, with occasional public clashes.

OpenAI is reportedly considering accusing Microsoft, its largest backer, of anticompetitive behavior throughout their partnership.

The startup, growing frustrated with its partner, has discussed making antitrust complaints to regulators.