Anthropic has acquired the dev tools startup used by OpenAI, Google, and Cloudflare
Anthropic just acquired the dev tools stack powering OpenAI, Google, and Cloudflare. Here's why control of AI infrastructure matters.
Why it matters
Anthropic's acquisition of Stainless signals a strategic pivot toward owning the full stack of AI developer tooling—from model APIs to SDK generation. This move mirrors the vertical integration playbook seen across the industry and gives Anthropic direct control over how enterprise customers interact with its models.
The key facts
6 to knowAcquisition target: Stainless (New York-based dev tools startup)
Known customers: OpenAI, Google, Cloudflare
Stainless hosted products being wound down post-acquisition
Acquisition date: May 18, 2026
Acquisition amount: Not disclosed
Strategic implication: Vertical integration of developer tooling into Anthropic's product layer
Go to the source
TechCrunch AItechcrunch.com
Publisher excerpt: Stainless, a New York-based startup, will wind down all hosted products as part of the acquisition.