N NexChron

AI Agent

Definition An AI system that perceives its environment, makes decisions, and takes actions — often using tools like web search, code execution, or external APIs — to autonomously accomplish multi-step goals. Agents go beyond single-turn question answering to execute workflows.

In Depth

Modern LLM-based agents use a plan-act-observe loop: the model generates a plan, calls tools to execute steps, observes results, and iterates until the goal is met. Frameworks like LangChain, AutoGPT, and the Claude Agent SDK provide scaffolding for building agents. Key challenges include task decomposition reliability, error recovery, cost management, and safe handling of irreversible real-world actions.

Browse more terms

AI Agent AI Alignment Agentic AI Artificial General Intelligence Artificial Superintelligence Attention Mechanism AutoML Benchmark Bias (AI) Chain-of-Thought Computer Vision Deepfake Diffusion Model Edge AI Embedding Federated Learning Few-Shot Learning Fine-Tuning Function Calling GPT