AI agents are systems that use LLMs to autonomously perform tasks — planning, using tools, and taking actions to achieve goals, rather than just responding to single prompts. They represent an evolution toward more capable, autonomous AI applications.
What AI agents are
AI AGENT → an LLM-powered system that autonomously works toward a GOAL:
→ REASONS/plans → breaks a goal into steps
→ uses TOOLS → calls functions, APIs, searches, runs code, accesses data
→ takes ACTIONS and observes results → iterates (a loop of think → act → observe)
→ works toward the goal with some AUTONOMY (multi-step, not a single response)
→ beyond single Q&A → an LLM that can DO things over multiple steps
