Stainless free for open source

What Stainless gives open source projects, who qualifies, and how to apply. 1 verified offer, last checked 2026-09-07.

FOS-0163 ACTIVE verified 2026-09-07

Stainless

Stainless SDK generator Starter plan (free for FOSS)

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What you get

Stainless Starter plan (normally $79/month per SDK generator) free for qualifying non-commercial open source projects: SDK generation from OpenAPI specs, plus documentation site and MCP server generation.

Applies to

the project , not individual maintainers

Requirements

non-commercial / non-profit

run a repo match above to see which you meet →

How to apply

Create a free account, then email Stainless (address on pricing page) to request FOSS approval.

Provenance

Confirmed against stainless.com/pricing on 2026-09-07, matched anchor “Starter plan for free to qualifying non-commercial”.

Open program page ↗Check your repo →

Verified 2026-09-07. Details changed? Fix it on GitHub. Not sure you qualify? Match your repo against all 176 offers, or browse IDEs and dev tools, documentation, more tools.