MoneyThe story, in brief
Anthropic Buys Stainless To Cut Off OpenAI And Google SDK Access
Anthropic just acquired the SDK infrastructure behind OpenAI and Google. Then shut it down for them.
The KeyNews take
Why it matters
Anthropic is consolidating developer tooling infrastructure to lock in competitive advantage and create friction for rivals' SDK ecosystems. This signals a shift from model competition to platform control in agentic AI.
The key facts
5 to knowAnthropic acquired Stainless (SDK toolmaker)
Stainless built SDKs for OpenAI and Google
Anthropic shut down hosted products for competitors post-acquisition
Move positions Anthropic in agentic AI infrastructure layer
Acquisition date: May 2026
Go to the source
Forbes Innovationforbes.com
Publisher excerpt: Anthropic acquired Stainless, the SDK toolmaker behind OpenAI and Google, then shut the hosted products down for rivals. Inside the agentic AI infrastructure play.