Unverified60% confidenceFactExact time
Claude uses Anthropic's proprietary Messages API, which differs from OpenAI's Chat Completions API standard.
2
Sources
60%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026
Sources
Related Claims
UnverifiedAnthropic为Claude系列模型维护了一套独立的API规范，在消息结构、工具调用格式、流式事件类型等方面与OpenAI格式存在显著差异79% similarUnverifiedClaude Code expects Anthropic-style API responses in /v1/messages format, while local inference engines like vLLM provide OpenAI-compatible format at /v1/chat/completions.73% similarVerifiedOpenAI uses the Chat Completions API, Anthropic uses the Messages API, and Google uses the GenerativeAI API as their respective request/response interfaces.72% similarVerifiedClaude Code支持通过配置自定义API端点和API Key来对接兼容OpenAI接口规范的第三方模型服务72% similar
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