Several open-source tools exist to test LLM applications for prompt injection vulnerabilities, but they are not interchangeable and cater to different testing needs. Promptfoo, Giskard, and sentinel-scan-cli focus on app-layer testing, evaluating the application's prompts and logic, with Promptfoo being widely adopted and used by companies like OpenAI and Anthropic. Garak, maintained by NVIDIA, is a model-layer tool that tests the underlying model's susceptibility to attacks independently of the application. Microsoft's PyRIT, now archived, offered multi-turn attack orchestration for both app and model layers. AI
IMPACT Choosing the right prompt injection testing tool is crucial for securing LLM applications and avoiding costly vulnerabilities.
RANK_REASON Comparison of multiple open-source tools for LLM security testing.
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