Discover vulnerabilities across a codebase with industry-leading semantic code analysis.
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Tracked since 2026
The Bottom Line
- Price
- Free plan available, paid tiers above. Compare plans
Key facts
- Semantic code analysis engine for vulnerability discovery.
- Allows querying code like data to find security flaws.
- Free for open source projects and academic research, with paid options for enterprise CI/CD.
Pros
- Powerful code analysis
- Security focus
- GitHub integration
- Custom queries
- Free for public repos
Cons
- Learning curve
- Query writing complex
- Slow scans
- Resource intensive
- False positives
What is CodeQL?
CodeQL is a semantic code analysis engine that allows users to query code as if it were data. This enables the discovery of vulnerabilities and bad patterns across entire codebases by writing specific queries. Once a query is developed to find a particular vulnerability, it can be shared to help others eradicate similar issues.
CodeQL is primarily aimed at security researchers, developers, and organizations working with open-source projects or conducting academic research. It provides tools like a Visual Studio Code extension for writing and running queries, and the CodeQL CLI for creating databases from codebases. It's particularly useful for identifying variants of known vulnerabilities and ensuring code quality and security.
Available on: Web, Windows, macOS, Linux
Key Features
- Semantic code analysis
- Security queries
- Custom queries
- Vulnerability detection
- GitHub integration
- Multi-language
Pricing Plans
30-day Free TrialPricing checked Sep 27, 2026
| Plan | Price | Details |
|---|---|---|
| Free (Public repos) Popular | $0 | Open source
+1 more Show less
|
| Code Security | $30/month per committer | Private repos
+1 more Show less
|
| Secret Protection | $19/month per committer | Add-on
|
Is CodeQL worth the price?
Good value
CodeQL is best-in-class for code security scanning.
Free for open source, reasonable for private repos.
Reviews
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CodeQL FAQ
How does CodeQL help identify security vulnerabilities in code?
CodeQL functions as a semantic code analysis engine, treating code as queryable data. Users can write specific queries to discover vulnerabilities and problematic patterns across entire codebases. This approach allows for the identification of known vulnerability variants and helps maintain overall code quality and security.
Which teams would benefit most from using CodeQL?
CodeQL is best suited for security researchers, developers, and organizations involved with open-source projects or academic research. Its capabilities are particularly valuable for those focused on discovering and eradicating security issues through deep code analysis.
Can CodeQL be integrated into a developer's workflow?
Yes, CodeQL offers tools to integrate into a developer's workflow, including a Visual Studio Code extension for writing and executing queries. It also provides the CodeQL CLI, which allows users to create databases from codebases, facilitating analysis within their development environment.
How is CodeQL priced?
CodeQL is available on a free tier, which provides access to its core functionalities. For users requiring more extensive usage or additional features, paid plans are offered to accommodate those needs.
What kind of trade-offs should users consider when adopting CodeQL?
Users should be aware of CodeQL's learning curve and the complexity involved in writing effective queries. Additionally, scans can be slow and resource-intensive, and there is a potential for false positives, which may require further investigation.
How does CodeQL compare to a tool like GitGuardian for code security?
CodeQL focuses on semantic code analysis, allowing users to query code like data to find vulnerabilities and bad patterns, and is particularly strong for custom query development. GitGuardian, while also a code security tool, typically specializes in detecting secrets and sensitive data exposure within repositories.
Does CodeQL support analyzing open-source projects?
Yes, CodeQL is particularly useful for organizations working with open-source projects. It provides a powerful way to discover vulnerabilities and ensure code quality across these codebases, and is free for public repositories.
Source: codeql.github.com