Promptfoo LLM Vulnerability Scanner vs Tempest AI Security Test: Side-by-Side Comparison (2026)

Promptfoo LLM Vulnerability Scanner: Open-source LLM vulnerability scanner for AI red teaming and security testing. built by Promptfoo..

Tempest AI Security Test: Red team testing service that identifies security vulnerabilities. built by Tempest..

Both serve the AI Red Teaming market but differ in approach, feature depth, and target audience.

Promptfoo LLM Vulnerability Scanner is developed by Promptfoo. Tempest AI Security Test is developed by Tempest. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

Promptfoo LLM Vulnerability Scanner and Tempest AI Security Test serve similar AI Red Teaming use cases: both are AI Red Teaming tools, both cover AI Pentesting, Generative AI, Agentic AI Security. Key differences: Promptfoo LLM Vulnerability Scanner is Free while Tempest AI Security Test is Commercial. Review the feature comparison above to determine which fits your requirements.