Garak
https://github.com/NVIDIA/garak
OSS (Apache 2.0) LLM vulnerability scanner — 'nmap for LLMs.' Originally Leon Derczynski (Univ Sheffield / ITU Copenhagen); NVIDIA now stewards the project. Tests for jailbreaks, prompt injection, hallucination, data leakage. Apache-2.0; 5k+ stars.
At a glance
- Type
- OSS LLM vulnerability scanner (NVIDIA-stewarded)
- Tier
- T3
- Created
- 2023 (initial public release)
- Latest release
- not applicable — wrong section
- License
- Apache-2.0
- Pricing
- not applicable — wrong section
- Funding
- not applicable — wrong section
Taxonomy
- storage
- none-trivial
- retrieval
- none
- persistence
- session-only
- update
- agent-controlled
- unit
- turn
- governance
- opaque
- conflict
- out-of-scope
When to use
Optimised for: researcher / advanced practitioner LLM vuln scanning
Anti-fit: not applicable — wrong section
Pros & cons
Pros
NVIDIA-backed; nmap-like CLI ergonomics; broad probe library; research-quality scoring.
Cons
CLI-first (no SaaS dashboard); requires manual scoring/triage; not a commercial product per se.
Claims & capabilities
Apache-2.0; 5k+ stars; ~80 attack probes shipped; NVIDIA-stewarded
Technical surface
- API surface
- Python CLI
- Backend storage
- not applicable — wrong section
- Deployment
- not applicable — wrong section
- Embedding model
- not applicable — not a memory product
- Multi-tenancy
- not applicable — wrong section
- MCP
- not applicable — wrong section
- A2A
- not applicable — wrong section
- OpenTelemetry
- not applicable — wrong section
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