#1
HiddenLayer
The most comprehensive security platform for AI
Capabilities Prompt Security has that HiddenLayer doesn't
- Bias & Fairness Testing
- Regulatory Intelligence
Common ground: both serve Financial Services, SaaS & Technology.
Alternatives directory
Prompt Security alternatives
Vendors in the directory with the most taxonomy overlap with Prompt Security — shared frameworks, capabilities, industries, and integrations.
Last verified April 22, 2026How this shortlist is built
Ranking is deterministic: same product category (heaviest signal), then shared framework coverage, capabilities, industries, and integrations documented on each vendor's profile. No editorial narrative has been written for this page yet.
If you want a long-form comparison with pros, cons, and verdicts, see our curated alternatives pages or run the matchmaker.
At-a-glance
| Alternative | Shared frameworks | Shared capabilities | Pricing | |
|---|---|---|---|---|
| HiddenLayer | EU Artificial Intelligence Act, NIST AI Risk Management Framework, ISO/IEC 42001:2023 AI Management System | AI Model Inventory, Policy Management, Risk Assessment Workflow +5 | contact only | Compare |
| Robust Intelligence | NIST AI Risk Management Framework | AI Model Inventory, Policy Management, Risk Assessment Workflow +6 | contact only | Compare |
| Lakera | EU Artificial Intelligence Act, NIST AI Risk Management Framework | Model Monitoring, LLM Red Teaming, LLM Guardrails & Content Filtering +4 | contact only | Compare |
| TrojAI | NIST AI Risk Management Framework, EU Artificial Intelligence Act | Policy Management, Risk Assessment Workflow, Bias & Fairness Testing +4 | contact only | Compare |
| Credo AI | EU Artificial Intelligence Act, NIST AI Risk Management Framework, ISO/IEC 42001:2023 AI Management System | AI Model Inventory, Policy Management, Risk Assessment Workflow +6 | contact only | Compare |
| Fiddler AI | EU Artificial Intelligence Act, NIST AI Risk Management Framework, ISO/IEC 42001:2023 AI Management System | AI Model Inventory, Policy Management, Risk Assessment Workflow +5 | usage based | Compare |
How each alternative compares
Capabilities Prompt Security has that Robust Intelligence doesn't
- Regulatory Intelligence
Common ground: both serve Financial Services, Healthcare, Insurance, Employment & HR, SaaS & Technology.
#3
Lakera
The leading security platform to secure your AI future.
Capabilities Prompt Security has that Lakera doesn't
- AI Model Inventory
- Bias & Fairness Testing
- Audit Evidence Collection
Common ground: both serve SaaS & Technology, Education, Financial Services.
#4
TrojAI
Deploy AI Agents with Confidence.
Capabilities TrojAI has that Prompt Security doesn't
- Explainability
Capabilities Prompt Security has that TrojAI doesn't
- AI Model Inventory
- Third-Party AI Vendor Risk
- Regulatory Intelligence
Common ground: both serve Financial Services, Healthcare, Insurance.
#5
Credo AI
Context-driven AI governance for regulated enterprises.
Capabilities Credo AI has that Prompt Security doesn't
- Explainability
Capabilities Prompt Security has that Credo AI doesn't
- LLM Guardrails & Content Filtering
Common ground: both serve Financial Services, Healthcare, Insurance, Employment & HR, Education.
#6
Fiddler AI
AI observability and security for agentic and generative systems.
Capabilities Fiddler AI has that Prompt Security doesn't
- Explainability
Capabilities Prompt Security has that Fiddler AI doesn't
- Third-Party AI Vendor Risk
- Regulatory Intelligence
Common ground: both serve Financial Services, Healthcare, Insurance, Employment & HR, Retail & E-commerce, SaaS & Technology.
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These shortlists update automatically as we catalogue more vendors and expand coverage.