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ChatUpstage integration

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

Installation

Install langchain-upstage package.

pip install -U langchain-upstage

Environment setup

Make sure to set the following environment variables:

Usage

import os

os.environ["UPSTAGE_API_KEY"] = "YOUR_API_KEY"
from langchain_core.prompts import ChatPromptTemplate
from langchain_upstage import ChatUpstage

chat = ChatUpstage()
# using chat invoke
chat.invoke("Hello, how are you?")
# using chat stream
stream = chat.stream_events("Hello, how are you?", version="v3")
for token in stream.text:
    print(token, end="", flush=True)

Chaining

# using chain
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?"})
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