Startup profile · funding coverage
Stainless
Platform that generates and maintains high-quality SDKs from OpenAPI specs.
Stage
seed
Status
private
Coverage
full
Why Stainless is interesting
Stainless automates SDK craftsmanship — increasingly important as API surfaces and AI tool-calling explode.
Key facts
- Series A (Dec 2024): $25M led by a16z; Sequoia among participants (Stainless blog)
- Seed (2022): $3.5M led by Sequoia (FinSMEs)
- Co-investors not in VCT directory: Felicis, The General Partnership, MongoDB Ventures, Zapier
Investors in our directory
Funds linked from Stainless's profile — open a fund page for stage focus and related deal articles.
Industries
Developer Tools AI & Machine Learning
Industry hub pages are rolling out from our fund-derived baseline taxonomy.
FAQs about Stainless
Funding context and why this company shows up in venture coverage.
Stainless counts Andreessen Horowitz (a16z) among its investors, alongside Sequoia, per public funding announcements.
We track a16z-backed companies that are strategically relevant for founders and investors following AI, American Dynamism, crypto, bio, and enterprise software.
Last updated: 2026-07-24