HarmBench
5.4#25 in ai security testing toolsAPILinuxSelf-hosted
VisitHarmBench vs Promptfoo
What both publish
| Fact | HarmBench | Promptfoo |
|---|---|---|
| Installation | The README instructs users to clone the repository, install requirements with pip, and download the en_core_web_sm spaCy model. | Installation is available through npm, npx, Homebrew, and a project dependency; npm and npx require Node.js 22.22.0 or newer. |
| License | The public GitHub repository lists an MIT license. | The open-source project is distributed under the MIT license. |
HarmBench plans
No prices published.
Promptfoo plans
- CommunityFree
- EnterprisePriced on request
- On-PremisePriced on request
Pick HarmBench if…
You want what its maker publishes above — check its page for the details.
Pick Promptfoo if…
Promptfoo suits developers and enterprise teams evaluating prompts, model outputs, and AI application risks. Its local and self-hosted options may appeal to teams that want to run the Community plan on their own infrastructure.