SoapUI vs Insomnia: Which is Better in 2026?
Choosing between SoapUI and Insomnia 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:
SoapUI
The world's most popular open-source API testing tool for REST, SOAP, and GraphQL.
Best for you if:
- • Open-source API testing tool for REST, SOAP, and GraphQL.
- • Focuses on basic functional testing capabilities.
Insomnia
API client for REST and GraphQL
Best for you if:
- • Open-source API client by Kong supporting REST, GraphQL, gRPC, WebSocket, SSE, SOAP, and Socket.io in one tool
- • Free tier includes unlimited local projects, collection runners, and Inso CLI for CI/CD integration
| At a Glance |  SoapUI |  Insomnia |
|---|---|---|
Starts at | Contact us/moReadyAPI | $12/moPro |
Best For | API Tools | API Tools |
Rating | - | - |
Choose SoapUI or Insomnia?
Choose SoapUI if
The world's most popular open-source API testing tool for REST, SOAP, and GraphQL.
- Completely free and open-source
- Supports multiple API protocols
- Widely used and trusted in the API testing community
Choose Insomnia if
API client for REST and GraphQL
- Supports 7+ API protocols in a single tool, no need for separate clients
- Free tier includes unlimited local projects, collection runs, and environments
- Git Sync provides true version control without vendor lock-in
| Feature | SoapUI | Insomnia |
|---|---|---|
| Pricing Model | Freemium | Freemium |
| User Rating | ★4.5/5 168 reviews | ★4.3/5 15 reviews |
| Categories | API ToolsTesting & QA | API ToolsDeveloper Tools |
In-Depth Analysis
SoapUI
The world's most popular open-source API testing tool for REST, SOAP, and GraphQL.
Strengths
- +Completely free and open-source
- +Supports multiple API protocols
- +Widely used and trusted in the API testing community
- +Good for individual users and learning API testing fundamentals
Weaknesses
- -Limited automation capabilities (requires scripting)
- -No native CI/CD integrations
- -Data-driven testing not directly available
Key features
Insomnia
API client for REST and GraphQL
Strengths
- +Supports 7+ API protocols in a single tool, no need for separate clients
- +Free tier includes unlimited local projects, collection runs, and environments
- +Git Sync provides true version control without vendor lock-in
- +Open-source core means transparency and community-driven development
- +Inso CLI integrates API testing directly into CI/CD pipelines
Weaknesses
- -Git Sync limited to 3 users on the free plan
- -Mock server requests capped at 1,000/month on the free tier
- -Enterprise SSO (SAML/OIDC) only available on the $45/user/month plan
- -Desktop-only application, no browser-based or mobile client available
- -Some advanced features require a Kong account even for local-only usage
Key features
Pricing: SoapUI vs Insomnia
| Plan | SoapUI | Insomnia |
|---|---|---|
| Tier 1 | Contact us ReadyAPI | Free Essentials |
| Tier 2 | Free SoapUI Open Source | $12 Pro |
| Tier 3 | N/A | $45 Enterprise |
Pricing verified from each vendor's public pricing page. Compare in detail on SoapUI pricing and Insomnia pricing.
Who Should Use What?
On a budget?
Both are freemium. Compare plans on their websites.
Go with: SoapUI
Want the highest-rated option?
Neither has user reviews yet.
Go with: SoapUI
Value user reviews?
Neither has user reviews yet.
Go with: Insomnia
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?
Both are api tools tools. Compare their specific features to decide.
How important are ratings?
Neither has user reviews yet.
Key Takeaways
Insomnia
- Free tier available
- Our pick for this comparison
SoapUI
- Higher user rating: 4.5/5 vs 4.3/5
- Larger review base (168 reviews)
The Bottom Line
Insomnia is our pick.
Frequently Asked Questions
Is SoapUI or Insomnia better?
Insomnia is rated in our evaluation. Both are freemium.
What are SoapUI and Insomnia used for?
SoapUI: The world's most popular open-source API testing tool for REST, SOAP, and GraphQL.. Insomnia: API client for REST and GraphQL.
What does SoapUI cost vs Insomnia?
SoapUI is freemium (free tier + paid plans). Insomnia is freemium (free tier + paid plans). Visit their websites for detailed pricing.