Unverified60% confidenceFactExact time
Major vendors including Google, OpenAI, and Anthropic have all standardized Function Calling as an API capability.
2
Sources
60%
Confidence
Medium-term (~90 days)
Relevance
7/23/2026
First Seen
Valid until: 10/21/2026
Sources
Related Claims
UnverifiedAround 2023, OpenAI, Google, and Anthropic successively incorporated function calling interfaces into their official API specifications.79% similarVerifiedOpenAI 的 Function Calling 和 Anthropic 的 Tool Use API 都是 ReAct 模式的标准化实现78% similarUnverifiedOpenAI的REST API规范被广泛采用，形成了事实上的行业标准78% similarUnverifiedThe 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.77% similar
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