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Stainless Software

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Stainless enables the delivery of idiomatic SDKs in multiple languages while developers can focus on building APIs

New York City, United StatesFounded 2022Other B2B Software
Valuation $250–500M Last recorded · 2026
Revenue $1–10M Latest reported FY
Headcount <100 Current team size
Total funding $10–50M Disclosed equity funding
Unlock exact values This page shows ranges. Dealroom has the exact numbers for Stainless Software and the history behind them.

About Stainless Software

StainlessAPI is a cutting-edge startup that focuses on simplifying the development process for software engineers by providing tools to generate high-quality Software Development Kits (SDKs) for REST APIs. The company operates in the software development and API (Application Programming Interface) management market, serving primarily developers and tech companies that need to create and maintain APIs efficiently.

The core offering of StainlessAPI is its ability to take an OpenAPI Specification—a standard format for defining APIs—and automatically generate idiomatic SDKs. Idiomatic SDKs are software libraries that are designed to be natural and intuitive to use in a specific programming language. This allows developers to focus on building and improving their APIs without getting bogged down in the tedious task of writing and maintaining client libraries for different programming languages.

StainlessAPI's business model is likely subscription-based, where clients pay a recurring fee to access the platform's tools and services. This model ensures a steady revenue stream and aligns the company's success with the ongoing satisfaction and retention of its clients. Additionally, the company may offer premium features or enterprise-level solutions at higher price points.

The market for API management and development tools is growing rapidly, driven by the increasing reliance on APIs for software integration and the need for faster development cycles. StainlessAPI aims to capture a segment of this market by offering a solution that not only speeds up the development process but also ensures high-quality, maintainable code.

In summary, StainlessAPI is revolutionizing the way developers create and manage APIs by providing automated tools for generating SDKs, thereby saving time and reducing costs. The company serves developers and tech firms, operates in the API management market, and makes money through a subscription-based model.

Source: Dealroom company data

At a glance

Status
Acquired
Founded
2022
Headquarters
New York City, United States
Employees
43
Open positions
None listed
Dealroom signal
61.1/100
Industry
Enterprise Software
Sector
Other B2B Software, Developer Tools, API
Business model
SaaS
Client focus
b2b

Funding history

3 recorded events

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
ACQUISITION✓Exit May 2026 $300M $300M Anthropic ↗
SERIES A✓Equity / VC Dec 2024 $25M $100M Sequoia · Claire Hughes Johnson · The General Partnership · MongoDB ↗
Showing the latest 2 of 3 recorded eventsBook a demo for the full funding history →

Financials

Revenue over time

Revenue, earnings and other financial measures where available. Years marked “E” are estimates.

YearRevenueGrowth
2026
2025
2024 —
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Growth signals

Stainless Software website traffic

Latest recorded traffic for Stainless Software is 78K monthly website visits, up 18.2% over the last three months. Stainless Software's team declined 41.9% over the past year.

Latest monthly visits78K 3-month web change+18.2% 1-year team growth-41.9%
Summary metrics are public; monthly history is available with a demoCompare with peers →

Similar companies

Closest operating peers by Dealroom taxonomy

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Showing 8 of the closest matchesCompare every metric →

Investments and acquisitions

Capital deployed

Recent portfolio relationships for companies that also act as investors or acquirers.

Investors

9 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Seed2 investors entered at this stage

Series A6 investors entered at this stage

Other known investors1 additional known investor

  • Anthropic
Team profiled 15 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 1 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
3 countries with
team presence
🇺🇸 United States89.5%
🇦🇲 Armenia5.3%
🇮🇪 Ireland5.3%
3 countries shown

Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about Stainless Software on X, ranked by likes and reposts, corporate channels excluded.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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