1. Chatbots Converse; Agents Execute
An AI chatbot is designed for natural language conversation, answering user questions based on a fixed knowledge context (RAG). An autonomous AI agent goes further: it formulates multi-step plans, calls external APIs, queries databases, and loops through verification steps to achieve an assigned goal without human intervention.
Key Takeaway: Chatbots provide answers; autonomous agents execute end-to-end tasks.
2. Tool-Calling & ReAct Architecture
AI agents utilize the Reasoning + Acting (ReAct) framework. When given an objective (e.g. 'Audit this loan applicant'), the agent determines which tools to call (OCR parser $ ightarrow$ Pincode checker $ ightarrow$ CRM logger) and combines the results into an actionable decision.