Fern vs Stainless

Fern plans

• FreeFree
• EnterprisePriced on request

Stainless plans

• FreeFree

Pick Fern if…

Fern may suit teams producing API documentation and client libraries from specifications. The access controls, analytics, AI tools, and enterprise self-hosting options may also fit organizations with varied documentation needs.

Pick Stainless if…

Stainless suits teams that generate SDKs or API documentation from OpenAPI specifications, or want MCP servers for agent workflows. Its Free plan has stated generator, seat, endpoint, and preview-build limits.