head to head · open source
giskard-oss vs pentest-ai
giskard-oss has 5,830 GitHub stars, 537 forks, 64 open issues and last shipped 2 days ago. pentest-ai has 1,685 stars, 314 forks, 2 open issues and last shipped 7 days ago. giskard-oss leads on adoption by 246% (5,830 vs 1,685 stars). giskard-oss is written in Python under Apache-2.0; pentest-ai is written in Python under MIT. giskard-oss has attracted 9% as many forks as stars, pentest-ai 19%. giskard-oss was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (ai-security), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| giskard-oss | pentest-ai | |
|---|---|---|
| GitHub stars | ★ 5.8K | ★ 1.7K |
| License | Apache-2.0 | MIT |
| Written in | Python | Python |
| Last push | 2026-09-18 | 2026-09-13 |
| Forks | ⑂ 537 | ⑂ 314 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick giskard-oss if
- You weight community size — 5.8K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick pentest-ai if
- You want the pentest-ai feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and pentest-ai fits your workflow better
About giskard-oss
Giskard OSS is an open source Python library for evaluating, red teaming and testing LLM agents and RAG pipelines, built for developers, ML engineers and AI security teams that need reproducible checks on non deterministic systems.
read the full giskard-oss overview →
About pentest-ai
Pentest AI is an open source Python project that connects an AI client or model to a penetration testing workflow. It belongs to the AI security and application security ecosystem, and it is distributed under the MIT license. The project is published as ptai on PyPI and can be used through MCP, the CLI, or CI.
read the full pentest-ai overview →
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Frequently asked questions
Is giskard-oss or pentest-ai more popular?
giskard-oss has 5,830 GitHub stars and pentest-ai has 1,685. giskard-oss has the larger community by that measure.
Are giskard-oss and pentest-ai free?
Both are open source. giskard-oss is licensed under Apache-2.0 and pentest-ai under MIT. Neither carries a licence fee.
What is the difference between giskard-oss and pentest-ai?
giskard-oss is written in Python and pentest-ai in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, giskard-oss or pentest-ai?
Choose giskard-oss if you want the larger community (5,830 stars) or its Apache-2.0 licence terms. Choose pentest-ai if its feature set, stack or MIT licence fits better. Both are self-hostable.