Fern vs Kong: Which is Better in 2026?
Choosing between Fern and Kong comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Fern
Generate and publish SDKs and create stunning API documentation from your API specification.
Best for you if:
- • You need developer tools features specifically
- • Generates idiomatic SDKs in multiple languages from API specifications.
- • Automates the creation of interactive, SEO-optimized API documentation.
Kong
Route, secure, and observe APIs with a scalable platform
Best for you if:
- • You want to try before committing
- • You need API tools features specifically
- • Kong is an API gateway and platform for managing, securing, and monitoring APIs
- • It provides rate limiting, authentication, and traffic control for microservices
| At a Glance |  Fern |  Kong |
|---|---|---|
Starts at | Custom | FreeFree tier available |
Best For | Developer Tools | API Tools |
Rating | - | 4.4/5 |
Free plan | No | Yes |
Choose Fern or Kong?
Choose Fern if
Generate and publish SDKs and create stunning API documentation from your API specification.
- Generates high-quality, language-idiomatic SDKs, saving significant development time.
- Provides a comprehensive and customizable documentation platform with advanced features.
- Supports various API specification formats, offering flexibility.
- Your work is developer tools-shaped, not API tools-shaped
Choose Kong if
Route, secure, and observe APIs with a scalable platform
- High performance
- Extensible plugins
- Open source
- You want a free tier before you commit
- Your work is API tools-shaped, not developer tools-shaped
| Feature | Fern | Kong |
|---|---|---|
| Pricing Model | Paid | Freemium |
| User Rating | No ratings yet | ★4.4/5 70 reviews |
| Categories | Developer ToolsAPI Tools | API ToolsDevOps |
In-Depth Analysis
Fern
Generate and publish SDKs and create stunning API documentation from your API specification.
Strengths
- +Generates high-quality, language-idiomatic SDKs, saving significant development time.
- +Provides a comprehensive and customizable documentation platform with advanced features.
- +Supports various API specification formats, offering flexibility.
- +Includes built-in features like OAuth, pagination, and retries in generated SDKs.
- +Offers enterprise solutions with dedicated support for perfecting OpenAPI specs and launching SDKs.
Weaknesses
- -No free tier available, requiring a commitment to a paid plan.
- -Swift and Rust SDK generation are listed as 'coming soon', limiting current language support.
Key features
Kong
Route, secure, and observe APIs with a scalable platform
Strengths
- +High performance
- +Extensible plugins
- +Open source
Weaknesses
- -Complex setup
- -Enterprise features paid
Key features
Pricing: Fern vs Kong
| Plan | Fern | Kong |
|---|---|---|
| Tier 1 | N/A | Free Free |
| Tier 2 | N/A | Free Plus |
Pricing verified from each vendor's public pricing page. Compare in detail on Fern pricing and Kong pricing.
Who Should Use What?
On a budget?
Kong has a free tier. Fern is paid only.
Go with: Kong
Want the highest-rated option?
Kong is rated 4.4/5. Fern has no ratings yet.
Go with: Kong
Value user reviews?
Fern: no ratings yet. Kong: 70 reviews (4.4/5).
Go with: Kong
3 Questions to Help You Decide
What's your budget?
Fern is paid. Kong is freemium. Kong lets you start free.
What's your use case?
Fern is a developer tools tool. Kong is in API tools. Pick the category that matches your needs.
How important are ratings?
Kong is rated 4.4/5; Fern has no ratings yet.
Key Takeaways
Kong
- Free tier available
- Our pick for this comparison
Fern
- Better fit for developer tools
The Bottom Line
Kong is our pick.
Frequently Asked Questions
Is Fern or Kong better?
Kong is rated in our evaluation. Fern is paid and Kong is freemium.
What are Fern and Kong used for?
Fern: Generate and publish SDKs and create stunning API documentation from your API specification.. Kong: Route, secure, and observe APIs with a scalable platform.
What does Fern cost vs Kong?
Fern is a paid tool. Kong is freemium (free tier + paid plans). Visit their websites for detailed pricing.