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Promptfoo

Open-source LLM testing, evals, and red teaming

Artificial Intelligence

Promptfoo is an open-source framework that runs automated red teaming, prompt evals, and vulnerability scanning on LLM applications. For AI engineers and security teams building agents, RAG pipelines, or any LLM-powered product.

Top comment

One of the best open-source AI testing frameworks just got acquired by OpenAI, and it's still fully open source.

Promptfoo tests, evaluates, and red teams LLM applications from inside your development workflow.

The gap it fills: most teams ship AI features without ever systematically attacking their own prompts.

Promptfoo automates that.

It generates adversarial inputs tailored to your app, catches injections, jailbreaks, PII leaks, and agent misuse before a user does.

Key things it does:

  • Automated red teaming with 50+ vulnerability types

  • Prompt evals for regression testing across model versions

  • CI/CD integration for GitHub, GitLab, Jenkins

  • Real-time guardrails for production inputs

  • MCP proxy for securing Model Context Protocol communications

Built for AI engineers, security teams, and anyone running agents or RAG pipelines in production.

20k GitHub stars and used at more than 25% of Fortune 500 companies.

That adoption is the clearest signal of the gap it fills.

The OpenAI acquisition is worth watching, but the open-source commitment is explicit.

Model-agnostic testing stays intact.

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About Promptfoo on Product Hunt

Open-source LLM testing, evals, and red teaming

Promptfoo was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #47 on the daily leaderboard. Promptfoo is an open-source framework that runs automated red teaming, prompt evals, and vulnerability scanning on LLM applications. For AI engineers and security teams building agents, RAG pipelines, or any LLM-powered product.

Promptfoo was featured in Artificial Intelligence (466.2k followers) on Product Hunt. Together, these topics include over 86.8k products, making this a competitive space to launch in.

Reviews

Promptfoo has received 1 review on Product Hunt with an average rating of 5.00/5. Read all reviews on Product Hunt.

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