Verified65% confidenceFactExact time
OpenAI采用messages数组结构，Anthropic的Claude API将system prompt与用户对话严格分离，Google Gemini使用contents字段封装多轮对话
3
Sources
65%
Confidence
Medium-term (~90 days)
Relevance
7/7/2026
First Seen
Valid until: 10/5/2026
Sources
Kontext：一键迁移AI对话上下文，打破多模型切换壁垒
hackernewshackernews7/3/2026
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