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Repello AI ARGUS is a commercial ai threat detection tool by Repello AI. Witness Observe is a commercial ai threat detection tool by WitnessAI. Compare features, ratings, integrations, and community reviews side by side to find the best ai threat detection fit for your security stack.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, core features, company size fit, deployment model, here is our conclusion:
Mid-market and enterprise security teams deploying multiple LLMs or agentic AI systems need Repello AI ARGUS specifically for real-time prompt injection detection at scale; it's the only tool that catches jailbreaks and PII leakage across text, image, and audio inputs in production latency windows. The platform's support for 100+ languages and configurable guard policies means you can enforce consistent safety rules across fragmented AI stacks without rebuilding policies for each model or region. Skip this if your organization is still in early LLM pilots or if you need runtime guardrails integrated into your existing EDR platform; Repello is purpose-built for AI threat isolation, not general endpoint security.
Mid-market and enterprise security teams managing shadow AI and uncontrolled agent deployment will get immediate value from Witness Observe's network-level discovery, which catches AI applications without requiring endpoint agents across your environment. The platform detects over 4,000 known AI apps and captures real-time conversation data for analysis, giving you asset visibility and continuous monitoring that map directly to NIST ID.AM and DE.CM. Skip this if your organization hasn't yet identified where AI is actually running; Witness Observe is built for teams past the discovery phase who need runtime protection and policy enforcement.
Runtime security platform providing guardrails for LLMs and GenAI agents.
Enterprise AI security platform for visibility and control of AI usage
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Common questions about comparing Repello AI ARGUS vs Witness Observe for your ai threat detection needs.
Repello AI ARGUS: Runtime security platform providing guardrails for LLMs and GenAI agents. built by Repello AI. headquartered in United States. Core capabilities include Real-time prompt injection and jailbreak detection, PII leakage detection, Configurable guardrail policies (Repello Guard Policies)..
Witness Observe: Enterprise AI security platform for visibility and control of AI usage. built by WitnessAI. headquartered in United States. Core capabilities include Network-level AI application and agent discovery without endpoint clients, Real-time AI conversation capture and analysis, Intent-based classification using machine learning models..
Both serve the AI Threat Detection market but differ in approach, feature depth, and target audience.
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