What is Garak?
An open-source LLM vulnerability scanner (by NVIDIA). Garak probes AI models for weaknesses like prompt injection, jailbreaks, data leakage and toxic output, helping teams red-team and secure their LLM applications before shipping — free.
Garak sits in the cybersecurity category and is listed in the AIverse AI tools directory, where it holds an editorial rating of 4.5 out of 5 based on its capabilities, usability, value for money and reliability. It is developed by NVIDIA, founded in 2023.
Garak features and use cases
People typically use Garak for LLM security testing, Red-teaming AI apps, Prompt-injection checks and Pre-launch safety audits.
It is often associated with Open Source, Cybersecurity, LLM Security and Red-teaming.
Garak pricing
Garak is completely free (Free / Open Source). You can use it without a subscription.
As with any AI tool, the right plan depends on how heavily you use it. We recommend trying Garak before committing to a paid plan.
Is Garak worth it? Our bottom line
Overall, Garak is a strong choice in the cybersecurity category for 2026. Its standout strengths include Scans LLMs for security flaws and Tests prompt injection & jailbreaks. Bear in mind For security/ML engineers and CLI/technical tool. If it matches your workflow, Garak is well worth a try — especially since you can start for free.