Onyx Platform vs Plainsea Agentic Penetration Testing Platform: side-by-side comparison (2026)
Onyx Platform is a commercial agentic AI security solution by Onyx Security. Plainsea Agentic Penetration Testing Platform is a commercial penetration testing solution by Plainsea. Features, integrations, deployment and the company behind each one, side by side.
AI control plane for enterprise AI agent security, governance, and observability.
Agentic AI platform for continuous, full-lifecycle penetration testing.
Side-by-side comparison
Feature
Onyx Platform
Plainsea Agentic Penetration Testing Platform
Pricing model
Commercial
Commercial
Category
Agentic AI Security
Penetration Testing
Deployment and fit
Deployment type
Hybrid
Cloud
Company size fit
Mid-Market, Enterprise
Mid-Market, Enterprise
Company
Company
Onyx Security
Plainsea
Use cases and capabilities
Agentic AI Security
Yes
Yes
AI Governance
Yes
No
AI Observability
Yes
No
AI SPM
Yes
No
LLM Guardrails
Yes
No
LLM Security
Yes
No
MCP Security
Yes
No
Prompt Injection
Yes
No
Shadow AI
Yes
No
GenAI Security
Yes
No
AI Pentesting
No
Yes
Penetration Testing Framework
No
Yes
Continuous Testing
No
Yes
Red Team
No
Yes
Vulnerability Prioritization
No
Yes
Security Reporting
No
Yes
VAPT
No
Yes
Security Validation
No
Yes
Core features
10 features listed
10 features listed
Integrations
11 integrations listed
No integrations listed
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