HiddenLayer vs Prompt Security
A side-by-side comparison of HiddenLayer and Prompt Security, two Security tools, drawn from Ignaite's continuously-verified listings.
Compared from listings verified as of
HiddenLayer
SecurityAI security platform: model scanning, runtime defense, and automated red-teaming.
View HiddenLayerPrompt Security
SecurityRuntime security for enterprise GenAI: shadow-AI visibility, data-leak and prompt-injection defense.
View Prompt SecurityAt a glance
| Attribute | HiddenLayer | Prompt Security |
|---|---|---|
| Category | Security | Security |
| Pricing | PAID | PAID |
| License | Proprietary | Proprietary |
| Deployment | Hybrid | Hybrid |
| Platforms (differs) | Web, API | Web, API, Browser extension |
| Model support | Model-agnostic | Model-agnostic |
| Vendor (differs) | HiddenLayer | Prompt Security (SentinelOne) |
| Capabilities (differs) |
|
|
The honest brief
HiddenLayer
Deterministic runtime classifiers sit outside the inference path, adding no latency and surviving attacks that fool the model.
- Model-file malware/integrity scanning
- Out-of-path runtime detection
- Covers gen, agentic, and predictive AI
- Automated red-teaming + posture mgmt
- Opaque, quote-based enterprise pricing
- Hard to deploy, needs ML/infra team
- Learning curve for AI-security newcomers
- Docs thin on advanced config
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
When to pick which
They share capabilities, but each leads with different ones as a headline job:
HiddenLayer is built around AI security scanning.
- AI security scanning (primary capability)
Prompt Security is built around Guardrails.
- Guardrails (primary capability)
They also differ on:
- Platforms
- Web, API · Web, API, Browser extension
Their capability lists differ in recorded depth — compare the full lists above before deciding.