Critique Loop Architecture: Preventing LLM Hallucination

Prerequisite: Familiarity with the concepts introduced in Part 4 — Active Rag Tool Calling. Review it first if the terminology in this part is unfamiliar. In Part 4: Active RAG & Strict Tool Calling - Connecting LLMs to Real-time APIs, we successfully built a cyclic ReAct graph allowing the LLM to call APIs to check inventory and promotions in real-time. However, in a real-world production environment, giving an LLM access to Tools is not enough to guarantee absolute accuracy. ...

May 22, 2026 · 8 min · Lê Tuấn Anh