LangChain

 https://www.youtube.com/watch?v=nAmC7SoVLd8&list=PLeo1K3hjS3uu0N_0W6giDXzZIcB07Ng_F

• LLM - has 2 components
• Knowledge upto Sep2021
• Reasoning engine
• Agents
• Connects to external tools like Wikipedia, Math tools
• 
  
• 
  
• Chatgpt is appln -> call openai api -> which inturn calls LLM GPT3.5 or GPT4
• Challenges
• Higher cost calling openai api
• No access to internet or realtime data(Its knowledge is limited to Sep2021)
• No access to private data sources
• LangChain
• It is a framework that allows you to build applns using LLMs
• 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
• pip install langchain
  pip install openai
• import os

  os.environ['OPENAI_API_KEY']='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'
• from langchain.llms import OpenAI
  llm = OpenAI(temperature=0.6)
  name = llm( "I want to open a restaurant for Indian food. Suggest a fency name for this.")
  print(name)

https://www.youtube.com/watch?v=72XgD322wZ8&list=PLeo1K3hjS3uu0N_0W6giDXzZIcB07Ng_F&index=2