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"""**Chat Models** are a variation on language models.
While Chat Models use language models under the hood, the interface they expose
is a bit different. Rather than expose a "text in, text out" API, they expose
an interface where "chat messages" are the inputs and outputs.
**Class hierarchy:**
.. code-block::
BaseLanguageModel --> BaseChatModel --> <name> # Examples: ChatOpenAI, ChatGooglePalm
**Main helpers:**
.. code-block::
AIMessage, BaseMessage, HumanMessage
""" # noqa: E501
import warnings
from langchain_core._api import LangChainDeprecationWarning
from langchain._api.interactive_env import is_interactive_env
def __getattr__(name: str) -> None:
from langchain_community import chat_models
# If not in interactive env, raise warning.
if not is_interactive_env():
warnings.warn(
"Importing chat models from langchain is deprecated. Importing from "
"langchain will no longer be supported as of langchain==0.2.0. "
"Please import from langchain-community instead:\n\n"
f"`from langchain_community.chat_models import {name}`.\n\n"
"To install langchain-community run `pip install -U langchain-community`.",
category=LangChainDeprecationWarning,
)
return getattr(chat_models, name)
__all__ = [
"ChatOpenAI",
"BedrockChat",
"AzureChatOpenAI",
"FakeListChatModel",
"PromptLayerChatOpenAI",
"ChatDatabricks",
"ChatEverlyAI",
"ChatAnthropic",
"ChatCohere",
"ChatGooglePalm",
"ChatMlflow",
"ChatMLflowAIGateway",
"ChatOllama",
"ChatVertexAI",
"JinaChat",
"HumanInputChatModel",
"MiniMaxChat",
"ChatAnyscale",
"ChatLiteLLM",
"ErnieBotChat",
"ChatJavelinAIGateway",
"ChatKonko",
"PaiEasChatEndpoint",
"QianfanChatEndpoint",
"ChatFireworks",
"ChatYandexGPT",
"ChatBaichuan",
"ChatHunyuan",
"GigaChat",
"VolcEngineMaasChat",
]
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