Anthropic acquires Stainless • Hacker News Board

Re: Anthropic acquires Stainless

#11

Post by tehalex » Mon, May 18, 2026, 5:25 PM UTC

OpenAI uses stainless for at least some of their SDKs.

Re: Anthropic acquires Stainless

#12

Post by rcarmo » Mon, May 18, 2026, 5:27 PM UTC

This feels like the Apple playbook, but for software tooling--they are becoming vertically integrated.

Re: Anthropic acquires Stainless

#13

Post by alexarena » Mon, May 18, 2026, 5:28 PM UTC

phildougherty wrote: post #4

Whats the connection that got them the early in with anthropic?

Brian Krausz

Re: Anthropic acquires Stainless

#14

Post by nielsbot » Mon, May 18, 2026, 5:29 PM UTC

pplante wrote: post #9

I feel like we are seeing agentic coding tools morph into walled gardens with these acquisitions. Anthropic has restricted claude code usage while OpenAI has sort of let Codex fill the void. I am curious to see how this continues to evolve.

I think that's the normal path for new markets as they consolidate...

Re: Anthropic acquires Stainless

#15

Post by drewda » Mon, May 18, 2026, 5:29 PM UTC

> As we focus on Claude Platform capabilities and connecting agents to APIs, we’ll be winding down all hosted Stainless products, including our SDK generator. Starting today, new signups, projects, and SDKs will not be available.

For better or worse, it's an acquihire.

Re: Anthropic acquires Stainless

#16

Post by nomel » Mon, May 18, 2026, 5:30 PM UTC

tehalex wrote: post #11

OpenAI uses stainless for at least some of their SDKs.

Third sentence in the article:

> Founded in 2022, Stainless has powered the generation of every official Anthropic SDK since the earliest days of our API.

edit: bah. no more HN before coffee.

Re: Anthropic acquires Stainless

#17

Post by dgellow » Mon, May 18, 2026, 5:31 PM UTC

embedding-shape wrote: post #5

phildougherty wrote: post #4

Whats the connection that got them the early in with anthropic?

A useful product that developers who want some easy SDKs across a bunch of languages use?

Yes, but not only the pure SDK generation. The vision has always been to develop a platform that manages the end-to-end release process. In the case of Anthropic and other enterprise customers we also worked closely with their teams on their API and SDKs design, such as the development of the various streaming helpers

Re: Anthropic acquires Stainless

#18

Post by dalbaugh » Mon, May 18, 2026, 5:32 PM UTC

I'm really disappointed that such a great service is getting taken off the market. Happy for their team, but sad for the ecosystem.

This has to be somewhat anti-competitive. Why else sunset the SDK generator service but to hurt any other company (OpenAI, etc) who relies on these for their SDKs?

Re: Anthropic acquires Stainless

#19

Post by jwr » Mon, May 18, 2026, 5:32 PM UTC

tomeraberbach wrote: post #2

Stainless blog post: https://www.stainless.com/blog/stainless-is-joining-anthropi...

I can't find the word "journey" — I'm disappointed.

Re: Anthropic acquires Stainless

#20

Post by Analemma_ » Mon, May 18, 2026, 5:32 PM UTC

pplante wrote: post #9

I feel like we are seeing agentic coding tools morph into walled gardens with these acquisitions. Anthropic has restricted claude code usage while OpenAI has sort of let Codex fill the void. I am curious to see how this continues to evolve.

I don’t really see where the “walled garden” complaint is coming from. Anthropic spends a lot of effort to keep you from churning through trillions of tokens on their flat-rate subscription plan, but that’s a billing detail, and one that I honestly don’t share the outrage about. The technology part of CC is still totally open: skills, MCP, etc. are all open informal standards and there hasn’t been any movement to lock that down.