product
Data quality: Editorially ReviewedLanguage (LLM / NLP)
CLI / IDE plugin
Free
Software & technology
Prompt Engineering
Developer tool
Code generation & assistance
Promptfoo
Prompt Engineering
Overview
Promptfoo is an open-source CLI tool for testing and evaluating LLM outputs, providing red teaming, regression testing, and quality assurance for prompts and models. It supports multiple evaluation strategies, generates test matrices, and produces visual comparison reports. Promptfoo integrates with CI/CD pipelines for continuous prompt quality monitoring.
- Pricing model
- Free
- Deployment
- CLI / IDE plugin
- Regions served
- Global
- Categories
- Language (LLM / NLP), CLI / IDE plugin, Free, Software & technology, Prompt Engineering, Developer tool, Code generation & assistance
- Last updated
- 2 October 2026
- Published
- 2 October 2026
Use cases
Code generation & assistance
Deployment options
CLI / IDE plugin
Data sources & provenance
Where this information came from, how it was checked and when it was last looked at. “Last updated” records a change to the record — it does not mean the record was verified.
- Data quality
- Data quality: Editorially Reviewed
- Primary source
- promptfoo.dev
- Sources cited
- 2
- Last reviewed
- 28 September 2026
- Last updated
- 2 October 2026
Spotted something out of date?
Anyone can suggest a correction — you don't need an account. An editor checks every suggestion against the sources before the record changes.