Unverified50% confidenceFactExact time
LangChain的BaseChatModel、BaseLanguageModel等抽象基类被ChatOpenAI、ChatAnthropic、ChatOllama等具体模型类继承实现，遵循依赖倒置原则
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/4/2026
First Seen
Valid until: 10/2/2026
Sources
LangChain入门：Model与Agent核心概念详解
bilibiliAgentic_RAG7/2/2026
Related Claims
UnverifiedLangChain使用统一的BaseLanguageModel抽象封装LLM、Chat Model和Embeddings三种模型82% similarUnverifiedLangChain 引入 ChatModel 抽象来屏蔽不同模型底层实现的差异78% similarUnverifiedLangChain所有聊天模型都继承自BaseChatModel基类，实现统一的invoke()、stream()、batch()等方法76% similarUnverifiedLangChain为每类组件定义了统一的抽象基类，包括BaseLanguageModel、BaseRetriever、BaseTool等74% similarUnverifiedLangChain对大模型调用做了统一的抽象封装，上层业务代码只与统一的BaseLanguageModel接口交互，实现换模型不换代码73% similar
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