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This notebook covers how to get started with AI21 chat models.


!pip install -qU langchain-ai21

Environment Setup

We'll need to get a AI21 API key and set the AI21_API_KEY environment variable:

import os
from getpass import getpass

os.environ["AI21_API_KEY"] = getpass()


from langchain_ai21 import ChatAI21
from langchain_core.prompts import ChatPromptTemplate

chat = ChatAI21(model="j2-ultra")

prompt = ChatPromptTemplate.from_messages(
("system", "You are a helpful assistant that translates English to French."),
("human", "Translate this sentence from English to French. {english_text}."),

chain = prompt | chat
chain.invoke({"english_text": "Hello, how are you?"})

API Reference:

AIMessage(content='Bonjour, comment vas-tu?')

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