Anthropic

Anthropic is an AI safety and research company, and is the creator of Claude. This page covers all integrations between Anthropic models and LangChain.

Installation and Setup

To use Anthropic models, you need to install a python package:

pip install -U langchain-anthropic

You need to set the ANTHROPIC_API_KEY environment variable. You can get an Anthropic API key here

LLMs

[Legacy] AnthropicLLM

NOTE: AnthropicLLM only supports legacy Claude 2 models. To use the newest Claude 3 models, please use ChatAnthropic instead.

See a usage example.

from langchain_anthropic import AnthropicLLM

model = AnthropicLLM(model='claude-2.1')

API Reference:AnthropicLLM

Chat Models

ChatAnthropic

See a usage example.

from langchain_anthropic import ChatAnthropic

model = ChatAnthropic(model='claude-3-opus-20240229')

API Reference:ChatAnthropic