Stainless

Money Moves

As of May 2026: Being absorbed into Anthropic; hosted products winding down

For years, the developer kits that let outside engineers plug into OpenAI, Google, Meta and Cloudflare were generated by the same outside vendor: a New York startup called Stainless. Anthropic bought it this week for more than $300 million and said it will shut the shared service down.

Updated May 19