AI Security Gateway™ vs Harmonic Secure AI: Side-by-Side Comparison (2026)

AI Security Gateway™: OpenAI-compatible proxy for LLM DLP, PII redaction, and cost governance. built by AI Security Gateway. Core capabilities include 28+ PII entity type detection and redaction using NLP, Image OCR scanning for PII in vision requests, Prompt injection and jailbreak blocking..

Harmonic Secure AI: Security platform for GenAI adoption with data protection and Shadow AI detection. built by Harmonic Security. Core capabilities include Sensitive data detection in GenAI applications, Shadow AI discovery and monitoring, Inline user coaching and nudging..

Both serve the LLM Guardrails market but differ in approach, feature depth, and target audience.

AI Security Gateway™ differentiates with 28+ PII entity type detection and redaction using NLP, Image OCR scanning for PII in vision requests, Prompt injection and jailbreak blocking. Harmonic Secure AI differentiates with Sensitive data detection in GenAI applications, Shadow AI discovery and monitoring, Inline user coaching and nudging.

AI Security Gateway™ is developed by AI Security Gateway founded in 2025-01-01T00:00:00.000Z. Harmonic Secure AI is developed by Harmonic Security. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

AI Security Gateway™ and Harmonic Secure AI serve similar LLM Guardrails use cases: both cover Shadow AI. Review the feature comparison above to determine which fits your requirements.