Anthropic buys Stainless, the SDK tool its rivals also use @AnthropicAI has acquired Stainless, a New York startup whose software auto-generates and maintains API software development kits. Terms were not disclosed; The Information reported last week the talks valued it above $300 million. @StainlessAPI is used by OpenAI, Google, Cloudflare, Replicate, and Runway, and has powered every official Anthropic SDK since its API's early days. Anthropic will wind down all hosted Stainless products, including the SDK generator. Existing customers keep the SDKs they have already generated and can modify them, but the tooling will no longer be available to competitors. per TechCrunch. Alex Rattray (@RattrayAlex), ex-Stripe, founded Stainless in 2022, backed by Sequoia and Andreessen Horowitz. Rattray said the team will 'keep doing the work we love' at Anthropic, signaling the staff moves over.