LLM Guardrails in Practice: What Actually Works
Implementing effective guardrails for Large Language Models (LLMs) involves focusing on practical strategies that manage risk without hindering capability. Key techniques include input validation, such as prompt sanitization using regular expressions to detect and neutralize dangerous patterns, and input length limits to prevent excessive token usage. Content filtering, which can be enhanced by using a classifier model like Qwen2.5-1.5B for better accuracy, helps block policy violations in both inputs and outputs. Additionally, output validation is crucial for ensuring structured responses and performing targeted fact-checking against a knowledge base. AI
IMPACT Provides actionable techniques for developers to enhance the safety and reliability of LLM applications.