Side by side
HarmBench vs Project Moonshot
Both stand on ai security testing tools. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan APILinuxSelf-hosted
HarmBench provides a configurable pipeline for measuring attacks, defenses, and red-teaming performance. Its broad model support and distributed execution options serve technical evaluation work, but setup and compute requirements are significant.
Visit HarmBench Free plan APILinuxMac+3
Project Moonshot provides multiple ways to benchmark and red-team LLMs, including custom evaluations and machine-readable results. Its beta status and installation requirements are important considerations before adopting it.
Visit Project MoonshotThe facts
| HarmBench | Project Moonshot | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | API, Linux, Self-hosted | API, Linux, Mac, Self-hosted, Web, Windows |
| Lowest paid plan | Not published | Free or on request |
| Plans published | None | 1 |
| Maker | Not published | Not published |
| Website | github.com | aiverifyfoundation.sg |
| On ai security testing tools | #17 of 29 | #13 of 29 |
HarmBench: what it does well
- Free and open-source framework
- Supports multimodal models and closed APIs
- Allows custom models and methods
- Runs locally, with Ray, or SLURM
- Includes multiple evaluation classifiers
What to know first
- Requires sufficient GPU capacity
- Self-hosted Linux deployment
- Some model additions need manual configuration
- Classifier models are for evaluation only
Project Moonshot: what it does well
- Runs benchmarks using open-source datasets and metrics.
- Can generate adversarial prompts for red teaming.
- Custom evaluations can use users’ own datasets.
- Offers HTML reports and downloadable raw JSON.
- Free and licensed under Apache License 2.0.
What to know first
- The project is identified as beta software.
- Python 3.11 is required.
- Web UI requires Node.js 20.11.1 LTS or later.
- x86 Macs may encounter installation difficulties.
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