Pick Garak if
app / security teams who will run Community-style scans at $0 and already have a model API key.
Read the Garak pageGarak vs Promptfoo
Our take
Pick Garak if you're on a app / security team who will run Community-style scans at $0 and already have a model API key. Pick Promptfoo if you're on a app team who will run Community for $0 (MIT, self-host) and only buy Enterprise when they need SSO, a shared dashboard, and more than 10k probes. Skip Garak if you're on a team that want a YAML eval matrix + hosted dashboard (Promptfoo) or a research log viewer
Best for
Garak Fail a prompt before it ships
Promptfoo Fail the build before a prompt ships
Free plan
Garak $0 · apache-2.0. Local CLI. You pay model inference and machines
Promptfoo No free plan
Lowest paid
Garak Not published by the vendor
Promptfoo Not published by the vendor
Coding agent
Garak
Promptfoo Eval matrix
Runs where
Garak Hosted
Promptfoo Hosted
Watch out
Garak $0 is the toolkit, not the model bill
Promptfoo Community red team is 10k probes/month
Last checked
Garak 2026-10-28 · github.com/NVIDIA/garak
Promptfoo 2026-10-27 · promptfoo.dev/pricing
Which one, then?
Pick Promptfoo if
app teams who will run Community for $0 (MIT, self-host) and only buy Enterprise when they need SSO, a shared dashboard, and more than 10k probes.
Read the Promptfoo page