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Stainless is helping OpenAI, Anthropic and others build SDKs for their APIs | TechCrunch

Apr 24, 2024 - techcrunch.com
AI startups like OpenAI, Anthropic, and Together AI are using Stainless, a platform created by ex-Stripe staffer Alex Rattray, to generate SDKs for their APIs. Stainless takes in an API spec and generates SDKs in various programming languages, pushing updates as APIs evolve and change. The platform uses generative AI to produce an initial 'Stainless config' for customers, which they can then fine-tune to their API. This is particularly valuable for AI companies with large user bases of novice developers trying to integrate with complex features.

Stainless has dozens of paying clients in its beta, including Lithic, LangChain, Orb, Modern Treasury, and Cloudflare. The company recently closed a $3.5 million seed round with participation from Sequoia and The General Partnership. Stainless offers a free tier for publishing a single SDK, but charges between $250 per month and $30,000 per year for multiple SDKs across multiple programming languages. The company is expected to be profitable as soon as this year, with annual recurring revenue around $1 million.

Key takeaways:

  • AI startups like OpenAI, Anthropic and Together AI use Stainless, a platform created by ex-Stripe staffer Alex Rattray, to generate SDKs for their APIs.
  • Stainless takes in an API spec and generates SDKs in a range of programming languages including Python, TypeScript, Kotlin, Go and Java.
  • Stainless recently closed a $3.5 million seed round with participation from Sequoia and The General Partnership.
  • Stainless has a 10-person team based in New York and expects to grow to 15 or 20 by the end of the year.
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