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promptfoo

by promptfoo

CLI and library for evaluating, testing, and red-teaming LLM apps. Side-by-side prompt comparisons in your CI.

⭐ 7,000 stars🍴 0 forksTypeScripttestingclired-team
Start hereRead the setup guide →Install steps and usage, straight from the docs.Source codeDownload ZIPLatest commit on default branch.SourceView on GitHubgithub.com/promptfoo/promptfoo
Project site: promptfoo.dev

About promptfoo

promptfoo is a TypeScript open-source llm evals project by promptfoo. CLI and library for evaluating, testing, and red-teaming LLM apps. Side-by-side prompt comparisons in your CI. With 7,000 GitHub stars and 0forks, it's one of the LLM Evals tools worth knowing. You can download the source, browse it on GitHub, or read the full setup guide in the README below.

From the project README

Promptfoo: LLM evals & red teaming

npm npm GitHub Workflow Status MIT license Discord

promptfoo is a CLI and library for evaluating and red-teaming LLM apps. Stop the trial-and-error approach - start shipping secure, reliable AI apps.

Website · Getting Started · Red Teaming · Documentation · Discord

Promptfoo is now part of OpenAI. Promptfoo remains open source and MIT licensed. Read the company update.

Quick Start

This is an excerpt from the project's own README, quoted here for reference. Read the full README on GitHub →

promptfoo — FAQ

What is promptfoo?

CLI and library for evaluating, testing, and red-teaming LLM apps. Side-by-side prompt comparisons in your CI.

Is promptfoo free to use?

Yes. promptfoo is open-source and free. You can browse the source on GitHub or download it here at no cost — no signup required.

How do I install and run promptfoo?

Download the latest source as a ZIP from GitHub (or clone the main branch), then follow the setup steps in the README below.

What language is promptfoo written in?

promptfoo is primarily written in TypeScript.

How popular is promptfoo?

promptfoo has 7,000 stars and 0 forks on GitHub — a useful signal of how actively it's maintained and trusted by developers.

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