ChatGPT, as of December 2025, functions as a large language model (LLM) capable of generating human-quality text based on the prompts it receives; for website copy, this means providing it with existing content or specific instructions and receiving revised or newly written text in return.
The core mechanism relies on a transformer neural network architecture trained on a massive dataset of text and code. Currently, OpenAI’s ChatGPT (available in Australia via subscription, with enterprise options for larger businesses) now includes features like custom instructions, allowing users to define a consistent brand voice and style. The ‘GPTs’ functionality, introduced in late 2024 and refined throughout 2025, allows users to create tailored versions of ChatGPT for specific tasks – a ‘website copy improver’ GPT could be built with pre-defined parameters. In December 2025, the API access allows integration with Australian marketing automation platforms like HubSpot and Marketo, enabling automated copy generation and A/B testing. Data privacy is addressed through OpenAI’s data usage policies, which comply with Australian Privacy Principles, though businesses remain responsible for ensuring compliance with the Australian Consumer Law regarding misleading or deceptive content.
Ultimately, ChatGPT operates by predicting the most probable sequence of words based on its training data and the input prompt, generating text that aims to fulfil the user’s request.
