Comparison
last_layer vs fast-llm-security-guardrails
Verdict
Pick last_layer if an ultra-fast Python tool for detecting prompt injections and jailbreak attempts in large language models suitable for projects requiring rapid security evaluations, with low-latency performance; 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 · last_layer alternatives · fast-llm-security-guardrails alternatives
GraphCanon updated Sep 20, 2026
vs
Trust & integrity
| Signal | last_layer | fast-llm-security-guardrails |
|---|---|---|
| Maintenance | Dormant (780d since push) As of Sep 14, 2026 · github_public_v1 | Slowing (222d since push) As of Sep 14, 2026 · github_public_v1 |
| Provenance | Not a fork · Personal account As of Sep 14, 2026 · github_public_v1 | Not a fork · Organization account As of Sep 14, 2026 · github_public_v1 |
| OSV dependency advisories | Published findings As of Jul 15, 2026 · osv@v1 | Published findings As of Jul 15, 2026 · 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
- last_layer
- Ultra-fast low latency LLM prompt injection jailbreak detection
- fast-llm-security-guardrails
- The fastest Trust Layer for AI Agents
Stars
- last_layer
- 133
- fast-llm-security-guardrails
- 155
Forks
- last_layer
- 6
- fast-llm-security-guardrails
- 21
Open issues
- last_layer
- 13
- fast-llm-security-guardrails
- 0
Language
- last_layer
- Python
- fast-llm-security-guardrails
- Python
Adopt for
- last_layer
- An ultra-fast Python tool for detecting prompt injections and jailbreak attempts in large language models suitable for projects requiring rapid security evaluations, with low-latency performance.
- 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
- last_layer
- -
- fast-llm-security-guardrails
- -
Runtime
- last_layer
- -
- fast-llm-security-guardrails
- -
License
- last_layer
- MIT
- fast-llm-security-guardrails
- MIT
Last pushed
- last_layer
- Jul 26, 2024
- fast-llm-security-guardrails
- Feb 3, 2026
Categories
- last_layer
- Evaluation & Observability
- fast-llm-security-guardrails
- AI Agents, Evaluation & Observability
Trust and health
Maintenance
- last_layer
- Dormant (18%)
- fast-llm-security-guardrails
- Slowing (36%)
Days since push
- last_layer
- 780d
- fast-llm-security-guardrails
- 222d
Open issues (now)
- last_layer
- 13
- fast-llm-security-guardrails
- 0
Stars delta
- last_layer
- +2 (30d)
- fast-llm-security-guardrails
- +1 (30d)
Owner type
- last_layer
- User
- fast-llm-security-guardrails
- Organization
Full report
- last_layer
- Trust report
- fast-llm-security-guardrails
- Trust report
Shared compatibility
- Python · last_layer: Python runtime · fast-llm-security-guardrails: Python runtime
Choose last_layer if…
- Tags unique to last_layer: chatgpt-prompts, jailbreak, large-language-models, llm-local.
- When you need fast detection of potential security vulnerabilities due to unauthorized prompt manipulations in real-time scenarios involving LLMs
When NOT to use last_layer
- If your application does not require ultra-low latency detection and can afford slower, potentially more comprehensive security evaluations
- For environments that prefer a broader range of security features beyond prompt injection detection, as last_layer focuses specifically on this aspect with speed in mind
Choose fast-llm-security-guardrails if…
- 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 (arekusandr/last_layer) · observed Sep 20, 2026
- GitHub forks (arekusandr/last_layer) · observed Sep 20, 2026
- Last push (arekusandr/last_layer) · observed Jul 26, 2024
- License file (MIT) · observed Sep 20, 2026
- Decision facts (enrichment) · observed Jul 16, 2026
- Trust scan (lockfile / OSV) · observed Jul 15, 2026
- GitHub stars (ZenGuard-AI/fast-llm-security-guardrails) · observed Sep 20, 2026
- GitHub forks (ZenGuard-AI/fast-llm-security-guardrails) · observed Sep 20, 2026
- Last push (ZenGuard-AI/fast-llm-security-guardrails) · observed Feb 3, 2026
- License file (MIT) · observed Sep 20, 2026
- Decision facts (enrichment) · observed Jul 16, 2026
- Trust scan (lockfile / OSV) · observed Jul 15, 2026
GitHub stars on cards: last_layer 133 · fast-llm-security-guardrails 155 (synced Sep 20, 2026).
Common questions
- What is the difference between last_layer and fast-llm-security-guardrails?
- last_layer: Ultra-fast low latency LLM prompt injection jailbreak detection. 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 last_layer over fast-llm-security-guardrails?
- Choose last_layer over fast-llm-security-guardrails when Tags unique to last_layer: chatgpt-prompts, jailbreak, large-language-models, llm-local; When you need fast detection of potential security vulnerabilities due to unauthorized prompt manipulations in real-time scenarios involving LLMs.
- When should I choose fast-llm-security-guardrails over last_layer?
- Choose fast-llm-security-guardrails over last_layer when 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 last_layer?
- If your application does not require ultra-low latency detection and can afford slower, potentially more comprehensive security evaluations For environments that prefer a broader range of security features beyond prompt injection detection, as last_layer focuses specifically on this aspect with speed in mind
- 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 last_layer or fast-llm-security-guardrails more popular on GitHub?
- fast-llm-security-guardrails has more GitHub stars (155 vs 133). Stars measure visibility, not whether either tool fits your constraints.
- Are last_layer and fast-llm-security-guardrails open source?
- Yes - both are open-source projects on GitHub (last_layer: MIT, fast-llm-security-guardrails: MIT).
- Where can I find alternatives to last_layer or fast-llm-security-guardrails?
- GraphCanon lists graph-backed alternatives at last_layer alternatives and fast-llm-security-guardrails alternatives (last_layer 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, last_layer or fast-llm-security-guardrails?
- last_layer: Dormant. 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 last_layer and fast-llm-security-guardrails?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: last_layer trust report; fast-llm-security-guardrails trust report.