Fern vs Fumadocs: Features, Pricing and User Reviews 2026
Compare features, pricing, reviews, and more to make an informed decision
Fern
Fern generates production-ready SDKs and beautiful API documentation automatically from your OpenAPI specification for multiple programming languages.
Fumadocs
Fumadocs is a free open-source documentation framework for React developers that makes building beautiful, fast documentation sites simple and flexible.
Fern
Fern generates production-ready SDKs and beautiful API documentation automatically from your OpenAPI specification for multiple programming languages.
Fumadocs
Fumadocs is a free open-source documentation framework for React developers that makes building beautiful, fast documentation sites simple and flexible.
Fern
Automatic SDK generation in 8+ programming languages
Stripe-style API documentation websites
Direct publishing to package registries
OpenAPI and AsyncAPI support
Interactive API playground with live testing
Custom branding and domain support
Built-in OAuth 2.0 and authentication
Automatic pagination and retry logic
WebSocket and SSE support
Version control with Git
AI-powered search assistant
Open source on GitHub
Fumadocs
Free and open-source framework
Works with Next.js, React Router, and other React frameworks
Write content in Markdown and MDX
Built-in search with Orama and Algolia support
OpenAPI documentation generator
TypeScript Twoslash integration
Beautiful pre-designed UI components
Command-line tool for easy setup
Syntax highlighting with Shiki
Highly customizable with Tailwind CSS
Fern
Fern offers separate pricing for SDKs and documentation to fit different team needs.
For SDK generation, there are three tiers available:
Basic Plan ($250/month per SDK): Supports up to 50 endpoints with REST API support, automated publishing, and schema validation. Billed annually.
Pro Plan ($600/month per SDK): Includes up to 150 endpoints, WebSockets, webhooks, dedicated Slack support, and advanced features like pagination and OAuth. Billed annually.
Enterprise Plan (Custom pricing): Offers unlimited endpoints, SDK migration services, enterprise support with SLAs, GitHub issue monitoring, and custom code maintenance.
For documentation, pricing includes:
Basic Plan ($400/month): Stripe-like API reference, API playground, custom domain, and built-in components. Billed annually.
Pro Plan ($1,000/month): Everything in Basic plus custom React components, authenticated docs, role-based access control, and AI search capabilities. Billed annually.
Enterprise Plan (Custom pricing): Includes white-glove content migration, custom integrations, SSO authentication, design services, and enterprise support.
Fumadocs
Fumadocs is completely free and open source. There are no subscription fees, usage limits, or hidden costs. You can use it for personal projects, commercial applications, or anything in between without paying anything.
Since it is open source, you have full access to the code on GitHub. You can modify it to fit your needs, contribute improvements back to the community, or use it as-is. The framework is maintained by Fuma Nama and a community of developers who continuously improve it.
For hosting your documentation site, you will need a hosting service. Many developers use free tiers from Vercel or Netlify, which work perfectly with Fumadocs. Your only costs would be for hosting if you exceed the free tier limits of your chosen provider.