Test & secure your LLM apps
Open-source LLM testing used by 70,000+ developers
Automated red teaming for gen AI
Run custom scans that detect security, legal, and brand risk:
npx promptfoo@latest redteam initOur probes adapt dynamically to your app and uncover common failures like:
- PII leaks
- Insecure tool use
- Cross-session data leaks
- Direct and indirect prompt injections
- Jailbreaks
- Harmful content
- Specialized medical and legal advice
- and much more.
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Comprehensive security coverage
Custom probes for your application that identify failures you actually care about, not just generic jailbreaks and prompt injections.
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Built for developers
Move quickly with a command-line interface, live reloads, and caching. No SDKs, cloud dependencies, or logins.
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Battle-tested open-source
Used by teams serving millions of users and supported by an active open-source community.
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Easy abstractions for complex LLM testing
# Test cases are generated to specifically target the system's use case
purpose: 'Budget travel agent'
# Define where payloads are sent
targets:
- id: 'https://example.com/generate'
config:
method: 'POST'
headers:
'Content-Type': 'application/json'
body:
userInput: '{{prompt}}'
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"Promptfoo is really powerful because you can iterate on prompts, configure tests in YAML, and view everything locally... it's faster and more straightforward"
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"Promptfoo offers a streamlined, out-of-the-box solution that can significantly reduce the time and effort required for comprehensive prompt testing."
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