NeuralTrust vs. Prompt Security: AI Runtime Security Comparison 2026

NeuralTrust's TrustGuard is an AI runtime security solution designed to protect AI agents across multiple platforms and environments with a single policy model, offering inline enforcement and session-aware detection to stop attacks before execution. In contrast, Prompt Security, integrated into SentinelOne's broader AI usage governance suite, focuses on Model Context Protocol interactions and provides agent protection as separate modules for different surfaces. TrustGuard operates with a federated control plane for consistent governance across regions, while Prompt Security's isolated instances lack a unified control system. TrustGuard emphasizes agent-to-tool authentication and session-level awareness, addressing identity and multi-turn attacks, whereas Prompt Security relies on per-interaction inspection without fully considering the agent's identity. Both solutions offer flexible deployment options, but TrustGuard is specifically built for comprehensive, inline AI runtime security.

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