HiddenLayer AI Detection & Response vs Onyx Platform: Side-by-Side Comparison (2026)

HiddenLayer AI Detection & Response: Real-time detection & response for agentic and generative AI applications. built by HiddenLayer. Core capabilities include Prompt injection detection and prevention, PII leakage detection and blocking, Model tampering detection..

Onyx Platform: AI control plane for enterprise AI agent security, governance, and observability. built by Onyx Security. Core capabilities include Real-time AI agent activity monitoring across LLMs and frameworks, Session replay and audit trail for compliance and forensics, Shadow AI and unapproved model deployment detection..

Both serve the Agentic AI Security market but differ in approach, feature depth, and target audience.

HiddenLayer AI Detection & Response differentiates with Prompt injection detection and prevention, PII leakage detection and blocking, Model tampering detection. Onyx Platform differentiates with Real-time AI agent activity monitoring across LLMs and frameworks, Session replay and audit trail for compliance and forensics, Shadow AI and unapproved model deployment detection.

HiddenLayer AI Detection & Response is developed by HiddenLayer. Onyx Platform is developed by Onyx Security. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

HiddenLayer AI Detection & Response integrates with OpenAI, Anthropic, Azure, GCP, Meta and 2 more. Onyx Platform integrates with AWS, AWS VPC, AWS Bedrock, GCP, Azure and 6 more. Check integration compatibility with your existing security stack before deciding.

HiddenLayer AI Detection & Response and Onyx Platform serve similar Agentic AI Security use cases: both are Agentic AI Security tools. Review the feature comparison above to determine which fits your requirements.