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The History of Large Language Models: From ELIZA to GPT-5

Iva P.9 min readMar 12, 2026Industry Insights
Iva P.9 min read
Contents:
What is a large language model?
The early days: Before large language models
The statistical NLP era and machine learning foundations
The rise of transformers and modern LLM architectures
Timeline of the history of large language models
The development journey of large language models
Fine-tuning and human feedback: The RLHF revolution
From chatbots to agents: How LLMs are used today
First LLMs and their legacy
Key takeaways from the history of large language models
FAQs
Conclusion: Reflecting on decades of language modeling
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