Sue

Microsoft is threatening to sue OpenAI over the February 2026 Amazon $50B investment and $100B cloud-expansion deal. Microsoft says the Frontier agent platform on AWS (stateful runtime) violates the Azure exclusivity for stateless OpenAI APIs that was in the original ~$13B Microsoft investment agreements (updated Sept 2025). Microsoft publicly restated Azure remains the exclusive cloud provider of stateless OpenAI APIs and told OpenAI privately they will sue if breached.