Acquiring Company
Anthropic
Acquired Company
Stainless
San FranciscoNew YorkInformation TechnologySoftwareArtificial IntelligenceCyber SecurityMachine LearningNatural Language ProcessingData CenterSoftwareDescription
Anthropic has acquired Stainless, a startup known for its SDK generation tools widely used in the AI sector. The acquisition aims to take key infrastructure out of reach for Anthropic's competitors. While terms of the deal remain undisclosed, reports suggest the acquisition was valued at over $300 million. Stainless's technology will now exclusively support Anthropic's AI development efforts.
Who to call at Anthropic, and when
When Anthropic changes hands, the new owners review vendors, systems and leadership. That is when the door opens.
- An alert the day Anthropic raises, hires an executive or expands, scored against what you sell
- The decision-makers there, with verified emails
- Who you already know at Anthropic, from your own LinkedIn network
Works inside ChatGPT and Claude. Ask who to call at Anthropic. With Fundz connected, it knows.
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Fundz sees it the moment Anthropic makes an acquisition, hires an exec or expands, usually minutes after it happens, and tells you who to reach.
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Frequently asked
Who acquired Stainless?
Stainless was acquired by Anthropic, based in San Francisco. The deal was reported on May 18, 2026. Anthropic is an AI safety and research company that builds the Claude family of large language models and sells API and enterprise access to businesses and developers. Anthropic is privately held and operates in Information Technology.
When did Anthropic acquire Stainless?
Anthropic's acquisition of Stainless was reported on May 18, 2026. Anthropic has acquired Stainless, a startup known for its SDK generation tools widely used in the AI sector. The acquisition aims to take key infrastructure out of reach for Anthropic's competitors. Fundz records the date the transaction was first publicly reported, sourced from filings and company announcements.
What does Stainless do?
Stainless is a platform created by ex-Stripe staffer Alex Rattray, which assists companies in generating SDKs for their APIs. It is privately held, operating in Software, and is based in New York.
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