Moderne OpenRewrite vs Semgrep: Which is Better in 2026?
Choosing between Moderne OpenRewrite and Semgrep 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.
Bottom line: Semgrep is our overall pick for developer tools workflows. Pick Moderne OpenRewrite if you need a free tier to start with.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Moderne OpenRewrite
The agent tools company for large-scale, automated code transformation and remediation.
Best for you if:
- • Automates large-scale code refactoring, migrations, and security remediation.
- • Leverages AI agents and a semantic code model (OpenRewrite LST) for precise, governed changes.
Semgrep
Static analysis for finding bugs
Best for you if:
- • Semgrep is a code analysis tool for finding bugs and enforcing standards
- • It scans code with lightweight pattern matching for security and quality
| At a Glance |  Moderne OpenRewrite |  Semgrep |
|---|---|---|
Starts at | Contact Sales/moModerne SaaS Platform Edition | $40/moTeams |
Best For | Developer Tools | Developer Tools |
Rating | - | - |
Choose Moderne OpenRewrite or Semgrep?
Choose Moderne OpenRewrite if
The agent tools company for large-scale, automated code transformation and remediation.
- Dramatically reduces agent token cost through improved tool-call efficiency and precomputation.
- Executes large-scale engineering transformations accurately across entire software portfolios.
- Enables multi-agent enterprise readiness with shared intelligence, interoperability, and governance.
Choose Semgrep if
Static analysis for finding bugs
- Code analysis tool
- Good pattern matching
- Multi-language
| Feature | Moderne OpenRewrite | Semgrep |
|---|---|---|
| Pricing Model | Freemium | Freemium |
| User Rating | No ratings yet | ★4.6/5 54 reviews |
| Categories | Developer ToolsAutomation | Developer ToolsSecurity |
In-Depth Analysis
Moderne OpenRewrite
The agent tools company for large-scale, automated code transformation and remediation.
Strengths
- +Dramatically reduces agent token cost through improved tool-call efficiency and precomputation.
- +Executes large-scale engineering transformations accurately across entire software portfolios.
- +Enables multi-agent enterprise readiness with shared intelligence, interoperability, and governance.
- +Improves code quality and standardizes code across an organization.
- +Lowers cybersecurity risk by continuously upgrading libraries and patching vulnerabilities.
Key features
Semgrep
Static analysis for finding bugs
Strengths
- +Code analysis tool
- +Good pattern matching
- +Multi-language
- +Active development
- +Good for security
Weaknesses
- -Learning curve
- -Enterprise features paid
- -False positives
- -Configuration needed
- -Resource usage
Key features
Pricing: Moderne OpenRewrite vs Semgrep
| Plan | Moderne OpenRewrite | Semgrep |
|---|---|---|
| Tier 1 | Free Community Edition | Free Community |
| Tier 2 | Contact Sales Moderne SaaS Platform Edition | $40 Teams |
| Tier 3 | Contact Sales Moderne DX Edition | Enterprise |
Pricing verified from each vendor's public pricing page. Compare in detail on Moderne OpenRewrite pricing and Semgrep pricing.
Who Should Use What?
On a budget?
Both are freemium. Compare plans on their websites.
Go with: Moderne OpenRewrite
Want the highest-rated option?
Neither has user reviews yet.
Go with: Moderne OpenRewrite
Value user reviews?
Neither has user reviews yet.
Go with: Semgrep
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 developer tools tools. Compare their specific features to decide.
How important are ratings?
Neither has user reviews yet.
Key Takeaways
Semgrep
- Free tier available
- Our pick for this comparison
Moderne OpenRewrite
- Choose if you want the agent tools company for large-scale, automated code transformation and remediation
The Bottom Line
Semgrep is our pick.
Frequently Asked Questions
Is Moderne OpenRewrite or Semgrep better?
Semgrep is rated in our evaluation. Both are freemium.
What are Moderne OpenRewrite and Semgrep used for?
Moderne OpenRewrite: The agent tools company for large-scale, automated code transformation and remediation.. Semgrep: Static analysis for finding bugs.
What does Moderne OpenRewrite cost vs Semgrep?
Moderne OpenRewrite is freemium (free tier + paid plans). Semgrep is freemium (free tier + paid plans). Visit their websites for detailed pricing.