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TrojAI Defend is a commercial llm guardrails tool by Troj AI. Witness Control is a commercial llm guardrails tool by WitnessAI. Compare features, ratings, integrations, and community reviews side by side to find the best llm guardrails fit for your security stack.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, core features, integrations, company size fit, here is our conclusion:
Security teams deploying internal GenAI applications or third-party tools like ChatGPT will find TrojAI Defend essential for blocking prompt injection and jailbreak attacks at runtime without rebuilding your stack. The 10+ million tokens-per-second filtering capacity and OWASP/MITRE alignment mean you get detection that actually scales to production workloads, plus the browser extension handles unmanaged SaaS use. Skip this if your primary concern is post-incident forensics rather than prevention; TrojAI prioritizes real-time blocking over deep historical analysis.
Security teams deploying ChatGPT, Copilot, and other AI tools across departments need Witness Control because it enforces policy without requiring browser extensions or per-user agents, which actually works in hybrid environments where you can't control every device. Network-level visibility combined with real-time data redaction covers four NIST CSF 2.0 areas (GV.PO, PR.DS, DE.CM, DE.AE), meaning you get policy enforcement and compliance logging in a single deployment. Skip this if your organization only needs point controls for a handful of power users or lacks the infrastructure to route traffic through a cloud gateway.
AI firewall for runtime protection of AI models, applications, and agents
AI security platform with guardrails, policy enforcement, and data redaction
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Common questions about comparing TrojAI Defend vs Witness Control for your llm guardrails needs.
TrojAI Defend: AI firewall for runtime protection of AI models, applications, and agents. built by Troj AI. headquartered in Canada. Core capabilities include Real-time monitoring and blocking of AI inputs and outputs, Protection against prompt injection attacks, Jailbreaking prevention..
Witness Control: AI security platform with guardrails, policy enforcement, and data redaction. built by WitnessAI. headquartered in United States. Core capabilities include Network-level visibility of AI activity without browser extensions or agents, Real-time data redaction of sensitive information, Intent-based policy enforcement across AI tools..
Both serve the LLM Guardrails market but differ in approach, feature depth, and target audience.
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