Expired50% confidenceFactExact time
The Function Calling interfaces of mainstream LLMs (OpenAI, Gemini, Claude) all use JSON Schema as the standard format for tool parameter specifications.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/20/2026
First Seen
Valid until: 10/18/2026(expired)
Sources
Related Claims
UnverifiedMainstream LLM platforms including OpenAI, Anthropic, and Google Gemini already support passing in JSON Schema at the API level to constrain model generation.83% similarUnverifiedMainstream model APIs from OpenAI, Anthropic, and others all support passing in a JSON Schema at call time to constrain output format77% similarUnverifiedAchieving compatibility with the OpenAI format requires precise alignment of SSE streaming output format, JSON Schema definitions for Function Calling, and error code semantic mapping, enabling proxy tools such as LiteLLM to achieve transparent compatibility.75% similarUnverifiedOpenAI 使用 JSON Schema 定义 Function Calling 工具参数，Gemini 引入了 Parallel Function Calling 机制74% similar
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