CodeQL vs tfsec: Which is Better in 2026?
Choosing between CodeQL and tfsec 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: CodeQL wins this matchup. 1Password is our overall Security pick. LastPass is our free Security pick. Pick tfsec if you need a fully free option.
Short on time? Here's the quick answer
Based on published vendor pricing and features and on public review data, here's who should pick what:
CodeQL
Discover vulnerabilities across a codebase with industry-leading semantic code analysis.
Best for you if:
- • You want powerful code analysis
tfsec
Security scanner for your Terraform code.
Best for you if:
- • You want a fully free tool (CodeQL requires payment)
| At a Glance | CodeQL | tfsec |
|---|---|---|
Starts at | Free Free plan | Free 100% free |
Category | Security Developer Tools | Security Developer Tools |
Rating | n/a | n/a |
Free plan | Yes | Yes |
Choose CodeQL or tfsec?
Choose CodeQL if
- You want powerful code analysis
- You want security focus
Choose tfsec if
- You want a fully free tool (CodeQL requires payment)
- You want terraform security scanner
- You want static analysis for IaC
In-Depth Analysis
CodeQL
Discover vulnerabilities across a codebase with industry-leading semantic code analysis.
CodeQL is best-in-class for code security scanning.
Strengths
- Pro: Powerful code analysis
- Pro: Security focus
- Pro: GitHub integration
- Pro: Custom queries
- Pro: Free for public repos
Weaknesses
- Con: Learning curve
- Con: Query writing complex
- Con: Slow scans
- Con: Resource intensive
- Con: False positives
Key features
tfsec
Security scanner for your Terraform code.
tfsec offers an extremely generous pricing model, as it is entirely free and open-source.
Strengths
- Pro: Terraform security scanner
- Pro: Static analysis for IaC
- Pro: Many built-in rules
- Pro: CI/CD integration ready
- Pro: Open-source and free
Weaknesses
- Con: Terraform specific only
- Con: False positives possible
- Con: Rule customization needed
- Con: Now part of Trivy (Aqua Security)
- Con: Migration to Trivy recommended
Key features
Pricing: CodeQL vs tfsec
| Plan | CodeQL | tfsec |
|---|---|---|
| Tier 1 | Free Free (Public repos) | Free Free |
| Tier 2 | $30 month per committer Code Security | N/A |
| Tier 3 | $19 month per committer Secret Protection | N/A |
Pricing verified from each vendor's public pricing page. Compare in detail on CodeQL pricing and tfsec pricing.
Key Takeaways
CodeQL
- Free tier available
- Our pick for this comparison
tfsec
- Completely free
The Bottom Line
CodeQL wins this matchup. 1Password is our overall Security pick. LastPass is our free Security pick. That said, tfsec is free, hard to beat on price.
Frequently Asked Questions
Is CodeQL or tfsec better in 2026?
CodeQL wins this matchup. 1Password is our overall Security pick. LastPass is our free Security pick. Pick CodeQL for security workflows (main strength: powerful code analysis). Pick tfsec for security workflows (main strength: terraform security scanner).
What are CodeQL and tfsec used for?
CodeQL: Discover vulnerabilities across a codebase with industry-leading semantic code analysis. tfsec: Security scanner for your Terraform code.
What does CodeQL cost vs tfsec?
CodeQL's paid plans start at Free (Secret Protection). tfsec is free.
What's the main difference between CodeQL and tfsec?
CodeQL's main strength: powerful code analysis. tfsec's main strength: terraform security scanner.