Keploy vs Stoplight: Which is Better in 2026?
Choosing between Keploy and Stoplight 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:
Keploy
Open Source AI-Powered API, Integration, Unit Testing Agent for Developers
Best for you if:
- • You value community feedback (1 reviews)
- • You need API tools features specifically
- • Keploy automatically generates API test cases and mocks from real application traffic, reducing manual testing effort.
- • It helps developers improve regression testing and backend test coverage with seamless CI/CD integration.
Stoplight
Visually design, manage, and publish OpenAPI specs
Best for you if:
- • You need developer tools features specifically
- • Stoplight is an API design platform for building APIs collaboratively
- • It provides visual API design, documentation, and governance tools
| At a Glance |  Stoplight | |
|---|---|---|
Starts at | FreeFree tier available | FreeFree tier available |
Best For | API Tools | Developer Tools |
Rating | 4.9/5 | 4.4/5 |
Choose Keploy or Stoplight?
Choose Keploy if
Open Source AI-Powered API, Integration, Unit Testing Agent for Developers
- Automatically generates test cases from real API traffic, reducing manual test-writing effort
- Open-source and free to use, making it cost-effective for startups and development teams
- Supports API testing, regression testing, and mock testing in a single workflow
- Budget matters (Free vs Free)
- Your work is API tools-shaped, not developer tools-shaped
Choose Stoplight if
Visually design, manage, and publish OpenAPI specs
- Visual API design
- Auto documentation
- Mock servers
- Your work is developer tools-shaped, not API tools-shaped
| Feature | Keploy | Stoplight |
|---|---|---|
| Pricing Model | Freemium | Freemium |
| User Rating | ★4.9/5 47 reviews | ★4.4/5 343 reviews |
| Categories | API ToolsTesting & QA | Developer ToolsAPI Tools |
In-Depth Analysis
Keploy
Open Source AI-Powered API, Integration, Unit Testing Agent for Developers
Strengths
- +Automatically generates test cases from real API traffic, reducing manual test-writing effort
- +Open-source and free to use, making it cost-effective for startups and development teams
- +Supports API testing, regression testing, and mock testing in a single workflow
- +Helps improve test coverage by capturing real-world application behavior
- +Integrates smoothly with CI/CD pipelines for automated testing workflows
Weaknesses
- -Primarily focused on backend and API testing rather than frontend UI testing
- -Credit limits may feel restrictive on Free and Solo plans
Key features
Stoplight
Visually design, manage, and publish OpenAPI specs
Strengths
- +Visual API design
- +Auto documentation
- +Mock servers
Weaknesses
- -Learning curve
Key features
Pricing: Keploy vs Stoplight
| Plan | Keploy | Stoplight |
|---|---|---|
| Tier 1 | Free Playground | Free Free |
| Tier 2 | $19 year Pro | $44 Basic |
| Tier 3 | N/A | $113 Startup |
| Tier 4 | N/A | $362 Pro Team |
| Tier 5 | N/A | Enterprise |
Pricing verified from each vendor's public pricing page. Compare in detail on Keploy pricing and Stoplight pricing.
Who Should Use What?
On a budget?
Both are freemium. Compare plans on their websites.
Go with: Keploy
Want the highest-rated option?
Keploy: 4.9/5 (47 reviews). Stoplight: 4.4/5 (343 reviews).
Go with: Keploy
Value user reviews?
Keploy: 47 reviews (4.9/5). Stoplight: 343 reviews (4.4/5).
Go with: Stoplight
3 Questions to Help You Decide
What's your budget?
Both are freemium. Pricing won't help you decide here.
What's your use case?
Keploy is a API tools tool. Stoplight is in developer tools. Pick the category that matches your needs.
How important are ratings?
Keploy is rated higher: 4.9/5 vs 4.4/5.
Key Takeaways
Keploy
- Higher user rating: 4.9/5 vs 4.4/5
- More user reviews (1)
- Free tier available
- Our pick for this comparison
Stoplight
- Larger review base (343 reviews)
- Better fit for developer tools
The Bottom Line
Keploy (5.0/5) is our pick.
What Users Say
Keploy Reviews
Great Tool for Automated API Testing
What I like most about Keploy is how it simplifies backend testing for developers. Its automated test generation saves time and reduces the manual effort usually required for maintaining test cases. I also admire the company’s open-source mindset and clear vision toward improving developer productivity. The collaborative and fast-moving environment makes it a great platform for learning, contributing, and building impactful solutions
Frequently Asked Questions
Is Keploy or Stoplight better?
Keploy is rated 5.0/5 in our evaluation. Both are freemium.
What are Keploy and Stoplight used for?
Keploy: Open Source AI-Powered API, Integration, Unit Testing Agent for Developers. Stoplight: Visually design, manage, and publish OpenAPI specs.
What does Keploy cost vs Stoplight?
Keploy is freemium (free tier + paid plans). Stoplight is freemium (free tier + paid plans). Visit their websites for detailed pricing.