How Agent AI works?Models, Tools, Knowledge, and Evaluation

Published by Industry AI Decision

This diagram shows a simple view of how Agent AI works.

Agent architecture combines models for analysis, tools for system access, and knowledge for context, with evaluation feeding improvements back into the system.

Agent AI is not just a single AI model. It works by combining Models, Tools, and Knowledge, and then improving through Evaluation.

1. Models: Understand and Predict

Models are like the brain of Agent AI. They help the system analyze data, detect problems, predict outcomes, and suggest possible actions.

2. Tools: Connect and Act

Tools allow Agent AI to connect with real systems, such as MES, ERP, IoT sensors, databases, and other software. Through tools, Agent AI can get real-time data and support action.

3. Knowledge: Guide the Decision

Knowledge includes SOPs, rules, historical data, and business context. It helps Agent AI make safer, more reliable, and more practical decisions.

4. Evaluation: Learn and Improve

After a decision or action is made, Evaluation checks the results, such as accuracy, safety, cost, and execution outcomes. This feedback can guide changes to the agent’s prompts, tools, or decision workflow; evaluation alone does not automatically retrain the model.

Four components around an AI agent: models for reasoning, tools for action, knowledge for context, and evaluation for improvement.

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