AI Shield M99 vs LLM Guard: Side-by-Side Comparison (2026)
Features, pricing, ratings, and pros & cons — compared head-to-head.
AI Shield M99 is a commercial agentic ai security tool by Red Specter Security. LLM Guard is a free llm guardrails tool. Compare features, ratings, integrations, and community reviews side by side to find the best agentic ai security fit for your security stack.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, core features, integrations, company size fit, here is our conclusion:
Teams building internal LLM applications on tight budgets will find LLM Guard's free toolkit most valuable for its prompt injection detection and data leakage prevention, which address the attack vectors that matter most in early deployment phases. The 2,043 GitHub stars and active community indicate a maintained project with enough adoption to validate its sanitization approach against real-world LLM risks. Skip this if you need commercial SLA support, managed infrastructure, or detection beyond prompt-level threats; LLM Guard is a self-hosted library for teams comfortable building guardrails themselves, not a hosted API or platform.
Data verified May 2026
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AI Shield M99
AI agent kill switch with 6-level graduated response and 7-layer termination.
LLM Guard
LLM Guard is a security toolkit that enhances the safety and security of interactions with Large Language Models (LLMs) by providing features like sanitization, harmful language detection, data leakage prevention, and resistance against prompt injection attacks.
Side-by-Side Comparison
Feature
AI Shield M99
LLM Guard
Pricing Model
Commercial
Free
Category
Agentic AI Security
LLM Guardrails
Verified Vendor
Deployment & Fit
Deployment Type
On-Premises
Company Size Fit
Mid-Market, Enterprise
Open Source
GitHub Stars
2,043
Last Commit
Sep 2025
Company Information
Company
Red Specter Security
Headquarters
Founded, Size & Funding
Use Cases & Capabilities
Agentic AI Security
LLM Security
Runtime Security
Anomaly Detection
Kubernetes Security
Lambda
AWS
Isolation
Alerting
Open Source
Generative AI
Prompt Injection
LLM Guardrails
NIST CSF 2.0 Coverage
NIST CSF 2.0 Mapping
Access NIST CSF 2.0 data from thousands of security products via MCP to assess your stack coverage.
Access via MCPCore Features
- 6-level graduated response system with auto-escalation timers
- 5-phase kill sequence across 7 infrastructure layers
- Signal Skip for critical threats bypassing lower response levels
- Post-kill verification with continuous monitoring and automatic re-kill
- Dead agent trap deployment (honeypot credentials, canary files, poisoned memory stores)
- Anti-resurrection controls (credential deny lists, DNS sinkhole, identity lockout, firewall rules)
- Pre-kill reconnaissance mapping process trees, network connections, and persistence mechanisms
- Multi-level authorization requirements scaling with response severity
- No features listed
Integrations
Docker
Kubernetes
AWS IAM
AWS Lambda
GCP service accounts
No integrations listed
Community
Community Votes
0
1
Bookmarks
User Reviews
No reviews yet
No reviews yet
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