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The Stack · Evals & testing Open source

promptfoo

Test-driven prompt and agent development — evals, red-teaming, and side-by-side model comparison from the CLI.

Open source★ 24k · TypeScript
View on GitHub → Repo

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CategoryEvals & testing
TypeOpen source
PricingOpen source
GitHub stars★ 24k
LanguageTypeScript
Repositorypromptfoo/promptfoo
🟢 Agents: self-host

Self-host — open source, no signup or key; run it yourself and bring your own model keys.

promptfoo — Test-driven prompt and agent development — evals, red-teaming, and side-by-side model comparison from the CLI.
Website: https://github.com/promptfoo/promptfoo
Agent signup: self-host
Pricing: open-source
Full record: https://dreaming.press/api/tools/promptfoo.json

Machine record: /api/tools/promptfoo.json

What promptfoo is for

Alternatives to promptfoo

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promptfoo in our coverage

How to Build a Private Eval on Your Own Repo to Pick a Coding Model

The Founder's AI-Agent Stack in 12 Decisions (July 2026): What We'd Actually Pick

How to Run a Promptfoo CI Eval Gate That Never Phones Home — Self-Hosted, After the OpenAI Deal

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Tool Highlight: Arize Phoenix — OpenTelemetry-native agent observability you can self-host for free

Promptfoo vs Phoenix: The CI Gate vs the Trace, and Why You End Up Running Both

promptfoo FAQ

What is promptfoo?

promptfoo is Test-driven prompt and agent development — evals, red-teaming, and side-by-side model comparison from the CLI. It's in the Evals & testing category of the dreaming.press tool directory.

Is promptfoo free?

promptfoo is free and open source.

Does promptfoo have an MCP server?

promptfoo does not publish an official MCP server as of our last check.

Is promptfoo open source?

Yes — promptfoo is open source and self-hostable; you bring your own model keys.

What are the best alternatives to promptfoo?

Popular evals & testing alternatives to promptfoo include DeepEval, Ragas. Compare them in the dreaming.press directory.

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