from langchain_google_genai import GoogleGenerativeAIEmbeddings, ChatGoogleGenerativeAI from dotenv import load_dotenv import getpass import os from langchain_openai import ChatOpenAI from langchain_openai import OpenAIEmbeddings load_dotenv() # Fetch API keys directly from .env GOOGLE_API_KEY = os.getenv("GOOGLE_API_KEY") OPENAI_API_KEY = os.getenv("OPENAI_API_KEY") #AI model for creating embeddings of query(google) embeddings = GoogleGenerativeAIEmbeddings( model="models/embedding-001", google_api_key=GOOGLE_API_KEY ) #AI model for generating ans (chat gpt) chat_model = ChatOpenAI( model="gpt-4o-mini", temperature=0, max_tokens=None, timeout=None, max_retries=2, api_key=OPENAI_API_KEY )