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Stainless

Anthropic Acquires SDK Startup Stainless for Over $300M, Cutting Off Key Tool Used by OpenAI and Google

Anthropic has acquired Stainless, a New York-based developer tools startup founded by former Stripe engineer Alex Rattray, in a deal reported to be worth more than $300 million. The acquisition removes a critical piece

19 May 2026 · 1 min read

Stainless

Anthropic Acquires SDK Startup Stainless for Over $300M, Cutting Off Key Tool Used by OpenAI and Google

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Stainless

Anthropic Acquires SDK Startup Stainless for Over $300M, Cutting Off Key Tool Used by OpenAI and Google

Trending today

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GMI Cloud Raises Over $660M to Accelerate Global AI Infrastructure Expansion

Dyna Robotics Launches New Robot for Full-Shift Work

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Nvidia Adds Hardware-Level Security Layer to Keep Rogue AI Agents Contained

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