Stainless

Stainless

Automates SDK generation for REST APIs

About Stainless

Simplify's Rating
Why Stainless is rated
A+
Rated A on Competitive Edge
Rated A+ on Growth Potential
Rated A on Rating Differentiation

Industries

Data & Analytics

Enterprise Software

Company Size

11-50

Company Stage

Series A

Total Funding

$27.7M

Headquarters

New York City, New York

Founded

2022

Overview

StainlessAPI provides tools that help software engineers create high-quality Software Development Kits (SDKs) for REST APIs. Their main product automatically generates SDKs from an OpenAPI Specification, which is a standard way to define APIs. This means developers can easily create libraries that are user-friendly in specific programming languages, allowing them to focus on building and improving their APIs instead of spending time on writing and maintaining client libraries. Unlike many competitors, StainlessAPI emphasizes automation in the SDK generation process, which helps speed up development and ensures the code is of high quality. The company's goal is to simplify API management and development, making it easier for developers and tech companies to integrate software solutions efficiently.

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Funded Recently
📈
Significant Headcount Growth
Simplify Jobs

Simplify's Take

What believers are saying

  • StainlessAPI raised $25M in Series A funding, boosting its growth potential.
  • The company serves high-profile clients like OpenAI, Anthropic, and Meta.
  • Growing demand for multi-language SDKs aligns with StainlessAPI's offerings.

What critics are saying

  • Emerging competition in AI-powered SDK generation could threaten StainlessAPI's market share.
  • Dependence on major clients like OpenAI and Meta poses a risk if they switch providers.
  • Frequent updates needed due to evolving programming languages may strain resources.

What makes Stainless unique

  • StainlessAPI automates SDK generation from OpenAPI specs, saving developers time and effort.
  • The platform supports multiple languages, including Python, Go, TypeScript, Kotlin, and Java.
  • StainlessAPI's AI-driven approach offers a unique edge in the API management market.

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Funding

Total Funding

$27.7M

Above

Industry Average

Funded Over

2 Rounds

Notable Investors:
Series A funding typically happens when a startup has a product and some customers, and now needs funding to scale. This money is usually used to grow the team, expand marketing, and improve the product. Venture capital firms are frequently the main investors here.
Series A Funding Comparison
Above Average

Industry standards

$15M
$8.2M
Discord
$15M
Canva
$25M
Stainless
$100M
GitHub

Benefits

Health Insurance

Company Equity

Commuter Benefits

Unlimited Paid Time Off

Growth & Insights and Company News

Headcount

6 month growth

↑ 20%

1 year growth

↑ 28%

2 year growth

↑ 33%
SiliconANGLE
Dec 10th, 2024
Stainless Software raises $25M for AI SDKs

Stainless Software Inc. has raised $25M in a Series A funding round led by Andreessen Horowitz, with participation from Sequoia, The General Partnership, and others. The company uses AI to generate SDKs from APIs, supporting languages like Python and Go. Stainless claims hundreds of paying customers, including OpenAI and Meta, and reports $1M in annual recurring revenue. The service offers a free tier and paid plans ranging from $250/month to $30k/year.

Latest Nigerian News
Dec 10th, 2024
Stainless, a startup offering an AI-powered API-to-SDK generator to customers like OpenAI, Anthropic, and Meta, raised a $25M Series A led by a16z (Kyle Wiggers/TechCrunch)

Stainless, a startup offering an AI-powered API-to-SDK generator to customers like OpenAI, Anthropic, and Meta, raised a $25M Series A led by a16z (Kyle wiggers/techcrunch).

Yahoo Canada
Jun 1st, 2024
Stainless is helping OpenAI, Anthropic and others build SDKs for their APIs

Rattray, who studied economics at the University of Pennsylvania, has been building things for as long as he can remember, from an underground newspaper in high school to a bike-share program in college. Rattray picked up programming on the side while at UPenn, which led to a job at Stripe as an engineer on the developer platform team. At Stripe, Rattray helped to revamp API documentation and launch the system that powers Stripe's API client SDK.

TechCrunch
Apr 24th, 2024
Stainless Is Helping Openai, Anthropic And Others Build Sdks For Their Apis

Besides a focus on generative AI, what do AI startups like OpenAI, Anthropic and Together AI share in common? They use Stainless, a platform created by ex-Stripe staffer Alex Rattray, to generate SDKs for their APIs.Rattray, who studied economics at the University of Pennsylvania, has been building things for as long as he can remember, from an underground newspaper in high school to a bike share program in college. Rattray picked up programming on the side while at UPenn, which led to a job at Stripe as an engineer on the developer platform team.At Stripe, Rattray helped to revamp API documentation and launch the system that powers Stripe’s API client SDK. It’s while working on those projects Rattray observed there wasn’t an easy way for companies, including Stripe, to build SDKs for their APIs at scale.“Handwriting the SDKs couldn’t scale,” he told TechCrunch. “Today, every API designer has to settle a million and one ‘bikeshed’ questions all over again, and painstakingly enforce consistency around these decisions across their API.”Now, you might be wondering, why would a company need an SDK if it offers an API? APIs are simply protocols, enabling software components to communicate with each other and transfer data. SDKs, on the other hand, offer a set of software-crafting tools that plug into APIs. Without an SDK to accompany an API, API users are forced to read API docs and build everything themselves, which isn’t the best experience.Rattray’s solution is Stainless, which takes in an API spec and generates SDKs in a range of programming languages including Python, TypeScript, Kotlin, Go and Java

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