It took the humble telephone 75 years to gain 100 million users. It took Facebook four and a half years.
ChatGPT, the AI driven chatbot, reached that figure in just two months.
The large language model virtual assistant, developed by OpenAI, scans massive amounts of data in response to a question and generates a realistic (or human) sounding response.
On Tuesday an updated version of the tool was released - ChatGPT-4.
So which industries have been quick to deploy the technology and what will that mean for workers?