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These are set in Github workflows, but forgot to add them to most makefiles for convenience when developing locally. `uv run` will automatically sync the lock file. Because many of our development dependencies are local installs, it will pick up version changes and update the lock file. Passing `--frozen` or setting this environment variable disables the behavior.
langchain-deepseek
This package contains the LangChain integration with the DeepSeek API
Installation
pip install -U langchain-deepseek
And you should configure credentials by setting the following environment variables:
DEEPSEEK_API_KEY
Chat Models
ChatDeepSeek class exposes chat models from DeepSeek.
from langchain_deepseek import ChatDeepSeek
llm = ChatDeepSeek(model="deepseek-chat")
llm.invoke("Sing a ballad of LangChain.")