ChatGPT users will be asked to take out a subscription plan for the large language model conversational artificial intelligence, OpenAI announced.
Initially available in the United States only, the plan is priced at US$20 (NZ$31) a month.
For that, subscribers are promised general access to ChatGPT even during peak hours, faster response times, and be first to get new features and improvements.
OpenAI said the aim with the subscription plan is "to help support free access to availability to as many people as possible."
Further plans, including cheaper and business plans, plus data packs, are also under consideration, OpenAI said.
Microsoft recently announced it will back OpenAI with a further multibillion dollar investment, intending to integrate the AI technology in its Bing search engine, Github CoPilot for programmers and Power BI.
Users of Microsoft's cloud computing service can also apply to try out the Azure OpenAI service with coding and large language models, the company said.