Verified90% confidenceFactExact time
Function Calling (Tool Use) is a standardized mechanism for large models to invoke external tools, where developers pre-declare tool names, descriptions, and parameter schemas, and the model autonomously determines when to make a call.
8
Sources
90%
Confidence
Long-term
Relevance
7/20/2026
First Seen
Sources
Related Claims
VerifiedTool Use (also known as Function Calling) is a core capability of modern large language models.85% similarVerifiedThe underlying mechanism of Tool Use is that developers pre-define the name, description, and parameter structure (Schema) of tools, and the model determines during inference when and which tool to call and outputs structured invocation instructions.83% similarUnverifiedTool Use / Function Calling is a core mechanism in AI agent architecture, through which the model issues structured instructions to external systems via tool calling interfaces.79% similarVerifiedThe tool-calling (Function Calling / Tool Use) capability enables LLMs to output structured intent instructions, which are captured by an external execution layer to actually operate on systems.77% similarUnverifiedFunction Calling technology enables models to output structured tool-call instructions, with actual operations carried out by an external execution engine.77% similar
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