In yester years, before the advent of ChatGPT or generative AI, or AI and LLM becoming mainstream, the ML models were built by data scientists in the employment of companies in areas like retail and banking. ML models were applied to the data. These models used to do everything — from prediction to recommendation.

After the arrival of LLMs, the model building work is being outsourced to external organisations. All the foundation models have been developed by OpenAI. Many new organisations are building LLMs for specific areas.

It does not mean that the work of data scientists has been replaced. or eliminated. However, it spares data scientists for other work, rather than spending energy for building a model.