Stainless destination planning

Migrate from Stainless to Fern

Fern may be a strong destination for teams that want docs and SDKs together. The key is preserving the exact Stainless-created developer contract.

Checks

What to check

Translate Stainless config into Fern/OpenAPI inputs.

Compare TypeScript and Python public surfaces.

Map docs routes and API reference examples.

Keep package names, versions, and repo releases stable during launch.

Details

Run a compatibility report against the current Stainless-generated SDK.

Export method names, constructor shape, error classes, pagination helpers, and README examples.

Compare generated outputs before changing repos or packages.

Keep the decision reversible until the report is clean.

Migration

Compare Stainless alternatives.

Review SDK generator pricing.

Generate a free preview with your OpenAPI and config.