ai red-teaming tools

ranked on what you can actually run today — because a third of this category has been acquired, and the three best options are free.

5 listed · 5 researched by us · featured first, then most upvoted

Promptfoo

we checked thisfree

mit-licensed, free for ten thousand probes a month, and the only free tool here that tests agent tool access.

#any-team-that-wants-to-s

Garak

we checked thisfree

apache 2.0 from nvidia, twenty-plus probe modules, and a peer-reviewed paper behind it.

#scanning-a-specific-mode#with-something-citable-t

Adversa AI

we checked thisnot published

the most itemised attack taxonomy and the only vendor naming five compliance frameworks — behind a demo form.

#teams-securing-ai-coding#where-its-current-flagsh

PyRIT

we checked thisfree

microsoft's mit-licensed red-team framework — build your own attacks, and the repository just moved.

#security-teams-with-engi

Lakera

we checked thisfree tier available

the only commercial vendor here you can start using without talking to anyone.

#smaller-teams-wanting-ru

this page is deliberately short: a handful of ai red-teaming tools we looked at properly, rather than everything that exists. if you build one that belongs here, a free listing takes two minutes and $50 pins it to the top of this page.

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