An embedded or dedicated software component that interacts with a person or system. An agent may or may not be "agentic" - i.e., it may or may not include autonomous or semi-autonomous decision-making or tool-calling ability. The term “agent” is used loosely in the industry for any AI assistant.
Agent / AI agent
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See: Agentic AI; Autonomy level; Multi-agent system; Tool calling (function calling)