# Copyright (c) "Neo4j"
# Neo4j Sweden AB [https://neo4j.com]
# #
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# #
# https://www.apache.org/licenses/LICENSE-2.0
# #
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import annotations
import os
from typing import Any, Optional, Union
from ..exceptions import LLMGenerationError
from .base import LLMInterface
from .types import LLMResponse
try:
from mistralai import Mistral
from mistralai.models.assistantmessage import AssistantMessage
from mistralai.models.sdkerror import SDKError
from mistralai.models.systemmessage import SystemMessage
from mistralai.models.toolmessage import ToolMessage
from mistralai.models.usermessage import UserMessage
MessageType = Union[AssistantMessage, SystemMessage, ToolMessage, UserMessage]
except ImportError:
Mistral = None # type: ignore
SDKError = None # type: ignore
[docs]
class MistralAILLM(LLMInterface):
def __init__(
self,
model_name: str,
model_params: Optional[dict[str, Any]] = None,
**kwargs: Any,
):
"""
Args:
model_name (str):
model_params (str): Parameters like temperature and such that will be
passed to the chat completions endpoint
kwargs: All other parameters will be passed to the Mistral client.
"""
if Mistral is None:
raise ImportError(
"Could not import Mistral Python client. "
"Please install it with `pip install mistralai`."
)
super().__init__(model_name, model_params)
api_key = kwargs.pop("api_key", None)
if api_key is None:
api_key = os.getenv("MISTRAL_API_KEY", "")
self.client = Mistral(api_key=api_key, **kwargs)
[docs]
def get_messages(self, input: str) -> list[MessageType]:
return [UserMessage(content=input)]
[docs]
def invoke(self, input: str) -> LLMResponse:
"""Sends a text input to the Mistral chat completion model
and returns the response's content.
Args:
input (str): Text sent to the LLM
Returns:
LLMResponse: The response from MistralAI.
Raises:
LLMGenerationError: If anything goes wrong.
"""
try:
response = self.client.chat.complete(
model=self.model_name,
messages=self.get_messages(input),
**self.model_params,
)
if response is None or response.choices is None or not response.choices:
content = ""
else:
content = response.choices[0].message.content or ""
return LLMResponse(content=content)
except SDKError as e:
raise LLMGenerationError(e)
[docs]
async def ainvoke(self, input: str) -> LLMResponse:
"""Asynchronously sends a text input to the MistralAI chat
completion model and returns the response's content.
Args:
input (str): Text sent to the LLM
Returns:
LLMResponse: The response from MistralAI.
Raises:
LLMGenerationError: If anything goes wrong.
"""
try:
response = await self.client.chat.complete_async(
model=self.model_name,
messages=self.get_messages(input),
**self.model_params,
)
if response is None or response.choices is None or not response.choices:
content = ""
else:
content = response.choices[0].message.content or ""
return LLMResponse(content=content)
except SDKError as e:
raise LLMGenerationError(e)