Expired60% confidenceFactExact time
Anthropic's Messages API supports more complex multimodal content block structures compared to OpenAI's Chat Completions API
2
Sources
60%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026(expired)
Sources
Claude Code with Local LLMs: Token-Free Deployment Guide & Configuration
bilibili程序员俱乐部6/12/2026
Related Claims
VerifiedOpenAI uses the Chat Completions API, Anthropic uses the Messages API, and Google uses the GenerativeAI API as their respective request/response interfaces.74% similarUnverified主流API请求结构messages:[...]加tools:[...]的schema本身就是聊天优先的，OpenAI的Chat Completions API和Anthropic的Messages API的顶层结构都预设了对话历史加工具列表的范式74% similarVerifiedBoth OpenAI and DeepSeek follow similar RESTful API specifications and are almost fully compatible in the design of the Chat Completions endpoint, both using a messages array to pass conversation history and a model field to specify the model.73% similarUnverifiedIn OpenAI's and Anthropic's API designs, the messages array is an ordered list of conversation history where each message contains a role (user/assistant/tool) and content field72% similar
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