Comparison
garak vs fast-llm-security-guardrails
Verdict
Pick garak if lLM Vulnerability Scanner; pick fast-llm-security-guardrails if fast-llm-security-guardrails, also known as ZenGuard, is designed for the rapid deployment of security measures into AI agent systems to ensure they operate within defined trust constraints.
Markdown twin · garak alternatives · fast-llm-security-guardrails alternatives
GraphCanon updated 1w
vs
Trust & integrity
| Signal | garak | fast-llm-security-guardrails |
|---|---|---|
| Maintenance | Very active (0d since push) As of 2w · github_public_v1 | Slowing (187d since push) As of 1w · github_public_v1 |
| Provenance | Not a fork · Organization account As of 2w · github_public_v1 | Not a fork · Organization account As of 1w · github_public_v1 |
| OSV dependency advisories | Published findings As of 1mo · osv@v1 | Published findings As of 1mo · osv@v1 |
| deps.dev advisories | Not queried deps.dev@v1 | Not queried deps.dev@v1 |
| OpenSSF Scorecard | Not queried openssf-scorecard@v1 | Not queried openssf-scorecard@v1 |
Tagline
- garak
- LLM vulnerability scanner
- fast-llm-security-guardrails
- The fastest Trust Layer for AI Agents
Stars
- garak
- 8.7k
- fast-llm-security-guardrails
- 154
Forks
- garak
- 1.1k
- fast-llm-security-guardrails
- 21
Open issues
- garak
- 374
- fast-llm-security-guardrails
- 0
Language
- garak
- Python
- fast-llm-security-guardrails
- Python
Adopt for
- garak
- LLM Vulnerability Scanner
- fast-llm-security-guardrails
- fast-llm-security-guardrails, also known as ZenGuard, is designed for the rapid deployment of security measures into AI agent systems to ensure they operate within defined trust constraints.
Persona
- garak
- -
- fast-llm-security-guardrails
- -
Runtime
- garak
- -
- fast-llm-security-guardrails
- -
License
- garak
- Apache-2.0
- fast-llm-security-guardrails
- MIT
Last pushed
- garak
- Aug 4, 2026
- fast-llm-security-guardrails
- Feb 3, 2026
Categories
- garak
- Evaluation & Observability
- fast-llm-security-guardrails
- AI Agents, Evaluation & Observability
Trust and health
Maintenance
- garak
- Very active (96%)
- fast-llm-security-guardrails
- Slowing (36%)
Days since push
- garak
- 0d
- fast-llm-security-guardrails
- 187d
Open issues (now)
- garak
- 374
- fast-llm-security-guardrails
- 0
Full report
- garak
- Trust report
- fast-llm-security-guardrails
- Trust report
Shared compatibility
- Python · garak: Python runtime · fast-llm-security-guardrails: Python runtime
Choose garak if…
- License: garak is Apache-2.0, fast-llm-security-guardrails is MIT.
- Tags unique to garak: ai, llm-evaluation, security-scanners, vulnerability-assessment.
- When needing to assess the security and reliability of language models specifically using a tool developed by NVIDIA.
When NOT to use garak
- When the targeted model is not supported by 'garak', such as some specialized API-based generators that need specific configurations beyond setting environment variables.
- If real-time updates are necessary, as the PyPI version of garak might lag behind the development version available on GitHub.
Choose fast-llm-security-guardrails if…
- License: fast-llm-security-guardrails is MIT, garak is Apache-2.0.
- Tags unique to fast-llm-security-guardrails: agentic-ai, ai-agent, ai-agents, ai-runtime.
- Also covers AI Agents.
- Fast integration of privacy and security guardrails in environments where real-time evaluation and observability are critical.
When NOT to use fast-llm-security-guardrails
- If your project requires a more customizable solution than what fast-llm-security-guardrails offers in its out-of-the-box configurations.
- For teams that operate without established runtime environments like LangChain or LlamaIndex, as this may necessitate significant adaptation of ZenGuard.
Explore
Sources
Every stat on this page traces to a dated GitHub sync, license file, enrichment field, or trust scan.
- GitHub stars (NVIDIA/garak) · observed Aug 5, 2026
- GitHub forks (NVIDIA/garak) · observed Aug 5, 2026
- Last push (NVIDIA/garak) · observed Aug 4, 2026
- License file (Apache-2.0) · observed Aug 5, 2026
- Decision facts (enrichment) · observed Jul 17, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
- GitHub stars (ZenGuard-AI/fast-llm-security-guardrails) · observed Aug 10, 2026
- GitHub forks (ZenGuard-AI/fast-llm-security-guardrails) · observed Aug 10, 2026
- Last push (ZenGuard-AI/fast-llm-security-guardrails) · observed Feb 3, 2026
- License file (MIT) · observed Aug 10, 2026
- Decision facts (enrichment) · observed Jul 16, 2026
- Trust scan (lockfile / OSV) · observed Jul 15, 2026
GitHub stars on cards: garak 8.7k · fast-llm-security-guardrails 154 (synced Aug 5, 2026).
Common questions
- What is the difference between garak and fast-llm-security-guardrails?
- garak: LLM vulnerability scanner. fast-llm-security-guardrails: The fastest Trust Layer for AI Agents. See the comparison table for live GitHub stats and shared categories.
- When should I choose garak over fast-llm-security-guardrails?
- Choose garak over fast-llm-security-guardrails when License: garak is Apache-2.0, fast-llm-security-guardrails is MIT; Tags unique to garak: ai, llm-evaluation, security-scanners, vulnerability-assessment; When needing to assess the security and reliability of language models specifically using a tool developed by NVIDIA.
- When should I choose fast-llm-security-guardrails over garak?
- Choose fast-llm-security-guardrails over garak when License: fast-llm-security-guardrails is MIT, garak is Apache-2.0; Tags unique to fast-llm-security-guardrails: agentic-ai, ai-agent, ai-agents, ai-runtime; Also covers AI Agents; Fast integration of privacy and security guardrails in environments where real-time evaluation and observability are critical.
- When should I avoid garak?
- When the targeted model is not supported by 'garak', such as some specialized API-based generators that need specific configurations beyond setting environment variables. If real-time updates are necessary, as the PyPI version of garak might lag behind the development version available on GitHub.
- When should I avoid fast-llm-security-guardrails?
- If your project requires a more customizable solution than what fast-llm-security-guardrails offers in its out-of-the-box configurations. For teams that operate without established runtime environments like LangChain or LlamaIndex, as this may necessitate significant adaptation of ZenGuard.
- Is garak or fast-llm-security-guardrails more popular on GitHub?
- garak has more GitHub stars (8,696 vs 154). Stars measure visibility, not whether either tool fits your constraints.
- Are garak and fast-llm-security-guardrails open source?
- Yes - both are open-source projects on GitHub (garak: Apache-2.0, fast-llm-security-guardrails: MIT).
- Where can I find alternatives to garak or fast-llm-security-guardrails?
- GraphCanon lists graph-backed alternatives at garak alternatives and fast-llm-security-guardrails alternatives (garak markdown twin, fast-llm-security-guardrails markdown twin), ranked by typed relationship edges rather than popularity votes.
- Is there a machine-readable version of this comparison?
- Yes. The markdown twin at this comparison mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers.
- Which is better maintained, garak or fast-llm-security-guardrails?
- garak: Very active. fast-llm-security-guardrails: Slowing. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance.
- Where are the full trust reports for garak and fast-llm-security-guardrails?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: garak trust report; fast-llm-security-guardrails trust report.