Stainless Software, Inc.

This company specializes in generating best-in-class SDKs for APIs, supporting multiple programming languages including Node/TypeScript, Python, Go, Java, and Kotlin. Their SDKs are known for robust features such as rich types, auto-pagination, auto-retry with backoff, and seamless authentication. Utilizing OpenAPI specifications, the company automates SDK updates through GitHub Actions. They offer various pricing plans: a free plan with 1 live SDK and up to 50 endpoints, a Startup plan at $250/month per live SDK with up to 50 endpoints, and a Business plan at $2,500/month with 5 live SDKs and up to 150 endpoints. Enterprise plans with advanced functionality and fully managed SDK services are available with tailored pricing. The company supports open source projects by offering the Startup plan for free and provides SOC2 compliance reports for Business and Enterprise plans. Authentication and access to staging repositories require a GitHub account. The company helps notable clients like OpenAI, Lithic, and Modern Treasury generate and maintain SDKs, saving significant engineering time and resources. They offer a full-stack TypeScript API Framework inspired by internal frameworks used at Stripe and are backed by industry experts and investors including Daniel Schafer, Guillermo Rauch, and Søren Bramer Schmidt. Their platform allows companies to scale SDKs across multiple languages with automated updates and releases, maintain control over code changes and merges, and includes comprehensive developer tools such as documentation, request logs, and rate-limiting.