HiddenLayer vs Protect AI: Which One Covers More of the OWASP LLM Top 10 in 2026?
HiddenLayer and Protect AI are both AI-SPM / Runtime Protection vendors. HiddenLayer covers 3 of 10 OWASP LLM risks and Protect AI covers 2, as of 2026-07-13. Based on llmthreat's coverage scoring, HiddenLayer covers more of the OWASP LLM Top 10 (3 vs 2). The full row-by-row diff is below.
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Spec comparison
| Attribute | HiddenLayer | Protect AI |
|---|---|---|
| Category | AI-SPM / Runtime Protection | AI-SPM / Runtime Protection |
| Deployment | SaaS, self-hosted, API/CI-CD; agentless and model-agnostic | SaaS + self-hosted; API/gateway and CI scanning |
| Best for | Enterprises needing model file scanning plus non-invasive runtime detection across GenAI, predictive ML and agentic systems | Securing the ML model supply chain, scanning third-party/Hugging Face models, and MLSecOps in the build pipeline |
| Founded | 2022 | 2022 |
| Funding | $56M | ~$108.5M (seed + Series A + $60M Series B); some trackers list up to $129M |
| Status | Active | Acquired · Palo Alto Networks |
OWASP LLM Top 10 coverage: HiddenLayer vs Protect AI
This diff is llmthreat's editorial read of both vendors' public documentation as of 2026-07-13, not an audited or vendor-endorsed score.
| OWASP LLM Risk | HiddenLayer | Protect AI |
|---|---|---|
| LLM01 Prompt Injection | Covered | Partial |
| LLM02 Sensitive Information Disclosure | Covered | Partial |
| LLM03 Supply Chain | Covered | Covered |
| LLM04 Data and Model Poisoning | Partial | Covered |
| LLM05 Improper Output Handling | Partial | Partial |
| LLM06 Excessive Agency | Partial | Unverified |
| LLM07 System Prompt Leakage | Partial | Partial |
| LLM08 Vector and Embedding Weaknesses | Partial | Unverified |
| LLM09 Misinformation | Not covered | Unverified |
| LLM10 Unbounded Consumption | Partial | Unverified |
Where they differ
HiddenLayer addresses LLM06 Excessive Agency, LLM08 Vector and Embedding Weaknesses, LLM10 Unbounded Consumption — risks where Protect AI scores Not covered or Unverified.
On the rest, they overlap. Past those gaps the decision is depth per risk, deployment, and price, not breadth.
Which should you choose?
HiddenLayer edges it on breadth, 3 covered risks to 2. HiddenLayer is built for enterprises needing model file scanning plus non-invasive runtime detection across GenAI, predictive ML and agentic systems, while Protect AI suits securing the ML model supply chain, scanning third-party/Hugging Face models, and MLSecOps in the build pipeline. Both rows sit in the full coverage matrix — read the profiles before deciding: HiddenLayer and Protect AI.
Frequently asked questions
Does HiddenLayer or Protect AI cover more of the OWASP LLM Top 10?
HiddenLayer does, 3 risks to 2 by our scoring. The diff table above shows exactly where they part ways.
Are HiddenLayer and Protect AI independent?
HiddenLayer is independent; Protect AI was acquired by Palo Alto Networks, as of 2026-07-13.