Anthropic has acquired the dev tools startup used by OpenAI, Google, and Cloudflare

Anthropic’s acquisition of Stainless signals a strategic power play for developer ecosystem dominance. By absorbing the SDK automation tool used by rivals OpenAI and Google, Anthropic gains critical infrastructure to accelerate its own API adoption and developer stickiness. In the 2026 AI economy, controlling the toolchain will be as valuable as the models themselves.