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AI agents represent a paradigm shift from simple chatbots to autonomous systems that can perceive their environment, reason about what to do, take actions using tools, and iterate until a task is complete.
The Agent Loop:
===============
+-------------+
| Observe |
| Environment |
+------+------+
|
v
+-------------+
+---->| Reason |
| | & Plan |
| +------+------+
| |
| v
| +-------------+
| | Act |
| | (Use Tools) |
| +------+------+
| |
| v
| +-------------+
| | Evaluate |------ Goal met? ---> DONE
| | Result |
| +------+------+
| |
| No |
+------------+
(iterate)
Key insight: An agent takes multiple steps autonomously rather than generating a single response.
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