garak
LLM vulnerability scanner for robust model evaluation
Pricing
Free tier
Flat rate
Adoption
↗RisingLicense
Open Source
Data freshness
Verified · Jul 16, 2026Overview
What is garak?
Garak is an open-source tool designed to scan and identify vulnerabilities in large language models. It helps developers ensure the security and reliability of their AI systems by providing comprehensive testing capabilities.
Key differentiator
“Garak stands out as an open-source, comprehensive LLM vulnerability scanner backed by NVIDIA, offering developers and data scientists a powerful tool to ensure their AI systems are secure and reliable.”
Capability profile
Capability Radar
Honest assessment
Strengths & Weaknesses
↑ Strengths
↓ Weaknesses
API requires Python-specific patterns, TypeScript SDK is community-maintained
v0.1 to v0.2 migration required rewriting chain definitions
Primary support is for Python, limited official support for other languages
Core documentation focuses on basic usage; advanced topics are sparse or missing
Fit analysis
Who is it for?
✓ Best for
Teams developing LLMs who need a robust vulnerability scanner to ensure model security and reliability.
Organizations that require comprehensive testing capabilities for their AI systems.
✕ Not a fit for
Projects with limited resources or expertise in setting up self-hosted tools
Users looking for a fully managed service without the need for local setup
Cost structure
Pricing
Free Tier
Available
Open source — free to use
Starts at
$0
Model
Flat rate
Enterprise
None
Performance benchmarks
How Fast Is It?
Ecosystem
Relationships
Works well with
Integrations
Next step
Get Started with garak
Step-by-step setup guide with code examples and common gotchas.