Stainless

“Anthropic has acquired Stainless, a four-year-old New York startup whose software automates the creation and maintenance of software development kits used by AI companies such as OpenAI, Google, and Cloudflare to connect applications to APIs and external services.”

“Anthropic's acquisition of Stainless signals that leading AI labs are moving beyond model development to own the developer tooling layer — SDK automation, API connectivity — that makes their platforms sticky.”