head to head · open source
giskard-oss vs vestige
giskard-oss has 5,878 GitHub stars, 547 forks, 64 open issues and last shipped yesterday. vestige has 648 stars, 71 forks, 46 open issues and last shipped today. giskard-oss leads on adoption by 807% (5,878 vs 648 stars). giskard-oss is written in Python under Apache-2.0; vestige is written in Rust under AGPL-3.0. giskard-oss has attracted 9% as many forks as stars, vestige 11%. vestige was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (llm-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 | vestige | |
|---|---|---|
| GitHub stars | ★ 5.9K | ★ 648 |
| License | Apache-2.0 | AGPL-3.0 |
| Written in | Python | Rust |
| Last push | 2026-10-08 | 2026-10-09 |
| Forks | ⑂ 547 | ⑂ 71 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick giskard-oss if
- You weight community size — 5.9K 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 vestige if
- You want the vestige feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches Rust
- You evaluated both and vestige 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 vestige
Vestige is a local, deterministic safety kernel and fail closed runtime firewall for AI agents that records every memory write and agent action in a signed, append only log called Strata, so you can see exactly what your agent did and why.
read the full vestige overview →
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Frequently asked questions
Is giskard-oss or vestige more popular?
giskard-oss has 5,878 GitHub stars and vestige has 648. giskard-oss has the larger community by that measure.
Are giskard-oss and vestige free?
Both are open source. giskard-oss is licensed under Apache-2.0 and vestige under AGPL-3.0. Neither carries a licence fee.
What is the difference between giskard-oss and vestige?
giskard-oss is written in Python and vestige in Rust. 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 vestige?
Choose giskard-oss if you want the larger community (5,878 stars) or its Apache-2.0 licence terms. Choose vestige if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.