Anthropic Acquires Stainless, Dev Tools Startup Used by OpenAI and Google
Original: Anthropic has acquired the dev tools startup used by OpenAI, Google, and Cloudflare
Why This Matters
Strategic acquisition removes critical AI infrastructure tools from competitors' access
Anthropic acquired Stainless, a startup that automates SDK creation for AI companies including OpenAI, Google, and Cloudflare. The acquisition reportedly exceeds $300 million and removes a key infrastructure supplier from competitors' access.
Anthropic announced the acquisition of Stainless, a New York-based startup founded in 2022 by former Stripe engineer Alex Rattray. The Information reported the deal value exceeds $300 million. Stainless automates the creation and maintenance of software development kits (SDKs) across multiple programming languages including Python, TypeScript, Kotlin, Go, and Java. The platform automatically updates SDKs as APIs change, eliminating manual maintenance. Major AI companies like OpenAI, Google, Replicate, Runway, and Cloudflare use Stainless tools to build AI agents that connect to external software. Anthropic will wind down all hosted Stainless products, including its SDK generator, making the technology exclusively available to Anthropic rather than competitors. Existing customers retain rights to previously generated SDKs.