LLM Guardrails Explained: Layers, Policies, and Production Trade-offs
LLM guardrails are policy controls on model inputs and outputs. Production systems combine fast pattern rules, heuristic scoring, optional LLM judges, and PII handling — enforced at a gateway rather than inside application code.
LLM guardrails are policy controls on model inputs and outputs. Production systems combine fast pattern rules, heuristic scoring, optional LLM judges, and PII handling — enforced at a gateway rather than inside application code.
Why guardrails belong at the gateway
Centralizing enforcement ensures every SDK, agent, and integration path is covered consistently.
Layered detection
L1 rules catch known attacks quickly. L2 scores ambiguous paraphrases. L3 adds reasoning for edge cases.