[KongchangAI]
Unverified60% confidenceFactExact time

OpenAI launched Function Calling in 2023, after which Anthropic's Tool Use, Google DeepMind's ReAct framework, and others successively refined the standard paradigm for model interaction with external systems.

2
Sources
60%
Confidence
Long-term
Relevance
7/12/2026
First Seen

Sources

A Deep Dive into AI Agent Harnesses: The Core Engineering Behind Agent Frameworks
redditr/learnmachinelearning7/11/2026

Related Claims

UnverifiedThe tool-calling mechanism was first introduced by OpenAI under the name Function Calling, and was subsequently adopted by mainstream model providers including Anthropic, Google, and Mistral.83% similar

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