AI
Training Data
The short answer
Training data is the large collection of text an AI model learned from before it was released — separate from the live web pages it might retrieve for a real-time answer.
Full explanation
A model's baseline knowledge of your business comes from training data and can be outdated or simply wrong. Live-search-connected tools (like ChatGPT Search or Perplexity) correct for this by retrieving current pages at answer time — which is exactly the layer GEO work is aimed at influencing.
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