llm.py

# llm.py
import os
from dotenv import load_dotenv
from langchain_google_genai import ChatGoogleGenerativeAI

load_dotenv()

GEMINI_API_KEY = os.getenv("GEMINI_API_KEY")
MODEL_NAME = os.getenv("GEMINI_MODEL", "gemini-1.5-pro")

llm = ChatGoogleGenerativeAI(
    model=MODEL_NAME,
    temperature=0,
    top_k=1,
    top_p=1.0,
    max_output_tokens=None,  # max_tokens trong langchain_google_genai là max_output_tokens
    timeout=None,
    max_retries=2,
    google_api_key=GEMINI_API_KEY,
)