2023-12-20 02:55:19 +00:00
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# langchain-anthropic
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2024-02-23 00:22:30 +00:00
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This package contains the LangChain integration for Anthropic's generative models.
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## Installation
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`pip install -U langchain-anthropic`
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## Chat Models
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| API Model Name | Model Family |
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| ------------------ | -------------- |
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| claude-instant-1.2 | Claude Instant |
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| claude-2.1 | Claude |
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| claude-2.0 | Claude |
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To use, you should have an Anthropic API key configured. Initialize the model as:
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```
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from langchain_anthropic import ChatAnthropicMessages
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from langchain_core.messages import AIMessage, HumanMessage
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model = ChatAnthropicMessages(model="claude-2.1", temperature=0, max_tokens=1024)
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```
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### Define the input message
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`message = HumanMessage(content="What is the capital of France?")`
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### Generate a response using the model
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`response = model.invoke([message])`
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For a more detailed walkthrough see [here](https://python.langchain.com/docs/integrations/chat/anthropic).
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