Unverified90% confidenceFactTime unknown
LangChain的astream方法返回的每个对象都是AIMessageChunk类型，这些chunk可以通过加法运算合并
1
Sources
90%
Confidence
Medium-term (~90 days)
Relevance
5/31/2026
First Seen
Valid until: 8/29/2026
Sources
LangChain流式输出与异步实战：Agent场景完整实现
youtubeJames Briggs
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