Introducing Large Language ModelsExploring the Foundations of Language Models and NLPUnderstanding the Transformer Architecture and Its Role in LLMsDemystifying the Tokenization and Prediction Steps in GPT ModelsA Brief History: From GPT-1 to GPT-4GPT-1GPT-2GPT-3From GPT-3 to InstructGPTGPT-3.5, Codex, and ChatGPTLLM Use Cases and Example ProductsBe My EyesMorgan StanleyKhan AcademyDuolingoYabbleWaymark Inworld AIBeware of AI Hallucinations: Limitations and ConsiderationsOptimizing GPT Models with Plug-ins and Fine-TuningSummary