Prompt Security vs WitnessAI
A side-by-side comparison of Prompt Security and WitnessAI, two Security tools, drawn from Ignaite's continuously-verified listings.
Compared from listings verified as of
Prompt Security
SecurityRuntime security for enterprise GenAI: shadow-AI visibility, data-leak and prompt-injection defense.
View Prompt SecurityAt a glance
| Attribute | Prompt Security | WitnessAI |
|---|---|---|
| Category | Security | Security |
| Pricing | PAID | PAID |
| License | Proprietary | Proprietary |
| Deployment (differs) | Hybrid | Cloud |
| Platforms (differs) | Web, API, Browser extension | Web |
| Model support | Model-agnostic | Model-agnostic |
| Vendor (differs) | Prompt Security (SentinelOne) | WitnessAI, Inc. |
| Capabilities (differs) |
|
|
The honest brief
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
WitnessAI
Sits as a gateway over employee and agent AI use — observe, enforce policy, and block prompt-injection/data-leak across any model, not just one app.
- Model-agnostic guardrails across all AI use
- Visibility into shadow AI / employee usage
- Single-tenant, customer-key encryption
- Founders from Palo Alto Networks and Exabeam
- Enterprise sales motion, no public pricing
- Aimed at large orgs, not individuals
- Relatively new company (founded 2023)
When to pick which
Both cover Guardrails.
Pick Prompt Security if you need MCP gateway / registry, AI security scanning, Red-teaming, and Content moderation.
- MCP gateway / registry (secondary capability)
- AI security scanning (secondary capability)
- Red-teaming (secondary capability)
- Content moderation (secondary capability)
Pick WitnessAI if you need LLM gateway / routing, LLM observability, and Regulatory compliance.
- LLM gateway / routing (primary capability)
- LLM observability (primary capability)
- Regulatory compliance (secondary capability)
Prompt Security leans on Guardrails as a headline capability; WitnessAI treats it as secondary.
- Guardrails (primary capability)
They also differ on:
- Deployment
- Hybrid · Cloud
- Platforms
- Web, API, Browser extension · Web