Redocly vs Fern: Features, Pricing and User Reviews 2026
Redocly
Beautiful API Documentation and Developer Portals
Redocly
Beautiful API Documentation and Developer Portals
What are Redocly and Fern?
Redocly is an API documentation platform that helps you build professional developer portals. You start with an OpenAPI file that describes your API, and Redocly transforms it into clean, readable documentation with examples and interactive features.
The platform includes several products working together. Reunite is where teams write and review content. Realm delivers the final documentation to your users. Redoc is the open-source engine that renders API reference docs. Reef helps you organize and discover all your APIs in one catalog.
Unlike basic documentation generators, Redocly gives you a complete developer portal. You can add guides, tutorials, and custom pages alongside your API reference. Everything is version controlled and updates automatically when you change your API definition.
Fern is a platform that automatically generates SDKs and API documentation from your API definition. You provide your OpenAPI, AsyncAPI, or gRPC specification, and Fern creates ready-to-use client libraries in languages like TypeScript, Python, Go, Java, Ruby, C#, PHP, and Swift.
The platform also builds documentation websites that look professional and match your brand identity. These sites include interactive API references, code examples, and a playground where developers can test your API without leaving the documentation.
Fern is open source and available on GitHub. It integrates with your existing workflow by publishing SDKs directly to package registries like npm and PyPI. The tool is designed for companies that want to provide a great developer experience without dedicating engineering resources to manual SDK maintenance.
Features of Redocly and Fern
Automatic API documentation from OpenAPI files
Beautiful three-panel layout with navigation and examples
Interactive API console to test endpoints
Custom branding and styling options
Git workflow with automatic updates
Multi-version API support
Advanced search with AI capabilities
Markdown support for guides and tutorials
Team collaboration and review tools
Custom domain hosting included
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
Use Cases of Redocly and Fern
Pricing of Redocly and Fern
Redocly offers pricing plans designed for different team sizes and needs. All plans come with a 30-day free trial so you can test the platform before committing.
The Pro plan costs $28 per user monthly when billed monthly. This plan includes Reunite for collaboration, custom domain hosting, one project, and up to 100 pages of documentation.
The Enterprise plan is $66 per user monthly when billed monthly. It includes everything from Pro plus 500 pages, single sign-on, guest access, role-based permissions, remote content syncing, AI search, Typesense search, analytics, and MCP servers.
The Enterprise Plus plan has custom pricing and includes all Enterprise features plus data residency options, dedicated sales support, procurement assistance, security reviews, invoice payment options, legal reviews, single-tenant hosting, and premium support with professional services.
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.
FAQs: Redocly vs Fern
Reviews: Redocly vs Fern
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