Comparison
Fern vs Stainless
Fern and Stainless are both listed under API & SDK tooling in this directory. On the criteria this directory records they differ on focus, public source repo, last commit, stars. The table below compares them on identical criteria, drawn from what each product publishes.
By Fabian HugUpdated
Side by side
| Criterion | Fern | Stainless |
|---|---|---|
| Category | Tools | Tools |
| Type | API & SDK tooling | API & SDK tooling |
| Focus | api, sdk, docs | api, sdk |
| Public source repo | Yes | Not stated |
| Last commit | Jul 2026 | Not stated |
| Stars | 3.7k | Not stated |
| Documentation | Yes | Yes |
| llms.txt | Yes | Yes |
| Link verified | Jul 15, 2026 | Jul 15, 2026 |
| Listed since | Jul 12, 2026 | Jul 12, 2026 |
What each one is
Generates SDKs and a docs site from an OpenAPI spec, so a small team can ship a full developer portal.
Fern is listed under API & SDK tooling, tagged docs.
Questions
- What is the difference between Fern and Stainless?
- Fern is listed under API & SDK tooling, tagged docs. Stainless is listed under API & SDK tooling. On the criteria this directory records they differ on focus, public source repo, last commit, stars; everything else it tracks is the same for both.
- Do Fern and Stainless publish their source code?
- Fern publishes a public source repository; Stainless does not list one in this directory. A public repository means the code is readable, not that it carries an open-source license.
How to read this
Every fact on this page is copied from the product's own site or repository and dated. We do not test these tools hands-on, we do not verify pricing, and the criteria are structural (what a product publishes) rather than qualitative (how well it works). Where a product does not state something, the table says so instead of guessing.
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