Journey into the heart of language technology! In this video, we delve into the fascinating world of Large Language Models (LLMs) and Chat Models. From understanding how these models process language to exploring their applications in conversational AI, this comprehensive guide is your gateway to the future of human-computer interaction. Get ready to unravel the secrets behind language understanding and chat-based AI!

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00:00 OpenAI API Key
01:47 Theory
02:10 What is Model
02:17 What is LLMs
02:45 What is Chat Models
03:20 Messages
04:20 What is HumanMessage
04:31 What AIMessage
04:43 What is SystemMessage
05:05 What is FunctionMessage
05:17 What is ToolMessage
05:52 Project Setup
06:53 Install Langchain
07:20 Install Langchain OpenAI
08:37 Install dotenv
09:02 Create env File then setup OpenAI API Key
10:13 LLMs
14:50 Chat Models
21:43 Track OpenAI Usages