Expired50% confidenceFactExact time
Anthropic's Messages API uses a separate 'system' field for system prompts and explicitly distinguishes 'user' and 'assistant' roles in the message body.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026(expired)
Sources
Local Deployment of Claude Code: Principles and Practical Guide for Three Approaches
bilibiliAI大模型_小奕6/10/2026
Related Claims
UnverifiedAnthropic's Messages API passes the system message as a separate top-level parameter rather than placing it in the messages array; tool calls use the tool_use and tool_result content block types.80% similarUnverifiedIn API calls, the system prompt is passed in as a distinct message role (role: system), carries higher instruction priority than ordinary user messages, and persists throughout the entire conversation.78% similarUnverifiedAnthropic使用Messages API并引入了独特的system prompt处理方式78% similarVerifiedIn large language model API calls, messages are divided into three roles: system, user, and assistant, with the system prompt having the highest priority.73% similarUnverifiedAnthropic Claude 将 system 字段独立于 messages 之外作为顶层参数传入，而 OpenAI 将系统提示作为 messages 数组中 role=system 的一条消息72% similar
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