LLM Guard vs Prompt Security
A side-by-side comparison of LLM Guard and Prompt Security, two Security tools, drawn from Ignaite's continuously-verified listings.
Compared from listings verified as of
LLM Guard
SecuritySecurity toolkit that sanitizes and screens LLM prompts and responses.
View LLM GuardPrompt Security
SecurityRuntime security for enterprise GenAI: shadow-AI visibility, data-leak and prompt-injection defense.
View Prompt SecurityAt a glance
| Attribute | LLM Guard | Prompt Security |
|---|---|---|
| Category | Security | Security |
| Pricing (differs) | FREE | PAID |
| License (differs) | Open source | Proprietary |
| Deployment (differs) | — | Hybrid |
| Platforms (differs) | API | Web, API, Browser extension |
| Model support | Model-agnostic | Model-agnostic |
| Vendor (differs) | Protect AI (Palo Alto Networks) | Prompt Security (SentinelOne) |
The honest brief
LLM Guard
Runs entirely self-hosted and free, with composable input and output scanners — no per-call cost or sending prompts to a hosted guardrail API.
- Prompt-injection & jailbreak detection
- PII redaction and secrets scanning
- Composable input/output scanners
- Self-hosted — data stays in your stack
- Active community, well-documented
- Python library — you build the integration
- No managed/hosted option
- Latency from running multiple scanners
- Tuning needed to cut false positives
Prompt Security
Covers both employee GenAI use (shadow-AI visibility) and homegrown LLM apps in one runtime layer — now backed by SentinelOne.
- Real-time data-leak prevention
- Blocks prompt-injection attacks
- Browser-extension and API coverage
- Part of SentinelOne Singularity platform
- Enterprise, paid-only pricing
- Roadmap tied to SentinelOne integration
- Heavier than a single-purpose API guard