Semgrep vs DeepSource
Semgrep and DeepSource are both popular tools in the Code Review & Testing space. Both use a freemium pricing model, with Semgrep starting at Free and DeepSource at Free. Both offer a free tier to get started. Below we break down features, pricing, strengths, and weaknesses to help you decide which tool fits your workflow best.
Last updated: March 2026
Quick Verdict
Choose Semgrep if you want fast, customizable static analysis for finding bugs and security issues. Semgrep's biggest strengths include extremely fast performance compared to traditional sast tools and easy-to-write custom rules without deep ast knowledge. Choose DeepSource if you prefer automated code quality and security analysis for modern teams.. Key advantages include autofix prs save significant remediation time and free for open-source projects.
Fast, customizable static analysis for finding bugs and security issues
Automated code quality and security analysis for modern teams.
| Semgrep | DeepSource | |
|---|---|---|
| Pricing | Free | Free |
| Free Tier | Yes | Yes |
| Pricing Model | Freemium | Freemium |
| Rating | ★ 4.3 | ★ 4.3 |
| Categories | Code Review & Testing | Code Review & Testing |
| Key Features | 6 features | 6 features |
| Feature | Semgrep | DeepSource |
|---|---|---|
| Pattern-based code scanning across 30+ programming languages | ✓ | — |
| Custom rule creation with intuitive YAML syntax | ✓ | — |
| Thousands of pre-built security and code quality rules | ✓ | — |
| CI/CD integration with GitHub Actions, GitLab, and more | ✓ | — |
| Fast local scanning with minimal false positives | ✓ | — |
| Differential scanning to analyze only changed code | ✓ | — |
| Static code analysis across multiple languages | — | ✓ |
| Automated fix generation with Autofix PRs | — | ✓ |
| Security vulnerability detection | — | ✓ |
| Code coverage tracking and enforcement | — | ✓ |
| GitHub, GitLab, and Bitbucket integration | — | ✓ |
| Custom analysis rules and configurations | — | ✓ |
Semgrep
Pros
- + Extremely fast performance compared to traditional SAST tools
- + Easy-to-write custom rules without deep AST knowledge
- + Strong open-source community with extensive rule library
- + Privacy-first with local scanning and no code upload required
Cons
- − Advanced features like cross-file analysis require paid plans
- − Learning curve for writing complex multi-pattern rules
- − Language support maturity varies across different ecosystems
DeepSource
Pros
- + Autofix PRs save significant remediation time
- + Free for open-source projects
- + Broad language support with deep analysis
- + Clean dashboard for tracking code health
Cons
- − Some language analyzers more mature than others
- − Can produce false positives on complex patterns
- − Enterprise features require paid plan
The Bottom Line
Choose Semgrep if: you want fast, customizable static analysis for finding bugs and security issues. It's completely free to use. Keep in mind: advanced features like cross-file analysis require paid plans.
Choose DeepSource if: you prefer automated code quality and security analysis for modern teams.. It's completely free to use. Keep in mind: some language analyzers more mature than others.
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