What is Tool Use?
An AI model's ability to select and invoke external tools like search engines, calculators, or code interpreters.
Definition
Tool use is the broader capability of AI models to extend their abilities by invoking external tools during response generation. While function calling is the mechanism, tool use encompasses the model's judgment about when to use tools, which tool to select, and how to interpret results. Tools can include web search, code execution, file operations, API calls, image generation, and database queries. Advanced tool use involves multi-step reasoning about tool selection, handling tool errors gracefully, and combining results from multiple tools. Tool use is what separates basic chatbots from AI agents capable of completing real-world tasks.
Examples
Why It Matters
Tool use determines the practical usefulness of AI assistants. Models with strong tool use can complete tasks that require current information, precise computation, or interaction with external systems.
Related Terms
Function Calling
An AI model's ability to output structured requests to invoke external functions, APIs, or tools during a conversation.
Multi-Agent Systems
Architectures where multiple specialized AI agents collaborate, debate, or coordinate to solve complex tasks.
AI Orchestration
Managing and coordinating multiple AI models, tools, and workflows to complete complex end-to-end tasks.
Prompt Chaining
Breaking complex AI tasks into sequential prompts where each step's output feeds into the next step's input.
Common Questions
What does Tool Use mean in simple terms?
An AI model's ability to select and invoke external tools like search engines, calculators, or code interpreters.
Why is Tool Use important for AI users?
Tool use determines the practical usefulness of AI assistants. Models with strong tool use can complete tasks that require current information, precise computation, or interaction with external systems.
How does Tool Use relate to AI chatbots like ChatGPT?
Tool Use is a fundamental concept in how AI assistants like ChatGPT, Claude, and Gemini work. For example: Perplexity using web search tools to find current information for answers Understanding this helps you use AI tools more effectively.
Related Use Cases
AI Models Using This Concept
See Tool Use in Action
Council lets you compare responses from multiple AI models side-by-side. Experience different approaches to the same prompt instantly.