VERDICT
The AI Security Platform that catches vulnerabilities in development. - promptfoo.dev
Depends. Buy the free open-source CLI if your team ships LLM features and must test for prompt injection, jailbreaks, and data leaks before production. Skip it entirely if your product has no AI surface — there is nothing here for you.
Medium. Based on 9 public sources; no independent ratings or named customer companies found.
Free
Open source (CLI/library)
high
Enterprise pricing only via sales call; hard to budget without a demo.
medium
Paid products (Guardrails, Model Security) are separate from the free OSS CLI.
low
Headline numbers (156 Fortune 500, 300k devs) are unverified self-reports.
Value for money: 4/5
Rating
Free
Starting price
9
Sources
Analyzed
Free
Not disclosed
No known vulnerabilities found in the sources reviewed.
Developer posts praise it as a developer-first, open-source eval and security tool; independent quantitative reviews are scarce.
“Open source, developer-first, organic grass-fed evals for LLMs (aka, how to choose the best prompt and model)”
“Promptfoo is the only tool in the AI security space the hardest problems at once. It's helping companies find safety, security, and privacy”
Compare Promptfoo with each alternative.
Open-source rival for LLM and agent testing and compliance
Promptfoo vs GiskardOpen-source eval framework if you need testing, not security ops
Direct AI-security competitor; compare pricing before sales calls
Promptfoo vs Prompt SecurityDeveloper-first AI security with strong red-teaming and guardrails
Based on 9 public sources; no independent ratings or named customer companies found.
Great free red-teaming CLI if you ship LLM apps. Paid platform pricing is opaque. No LLM in prod? Pointless.
Based on 9 public sources; no independent ratings or named customer companies found.
Anonymous. You can change your vote.
Loading votes…
Comments
One queue. No nested comments. Give a display name first. Limit: 200 words per comment and 7 comments per day. You can edit or delete yours.
No comments yet.