On what date was OpenAI’s ChatGPT publicly launched?

OpenAI publicly launched ChatGPT on November 30, 2022.

OpenAI introduced it as a research preview based on the GPT family of large language models. The conversational interface let users ask questions, request explanations, and generate text in a dialogue format, making advanced language-model capabilities accessible to a broad public audience.

The launch quickly attracted widespread attention because ChatGPT could maintain conversational context and produce fluent responses across many subjects. Its initial release was free to use, although OpenAI later introduced paid plans and additional model capabilities.

The date is sometimes confused with later milestones. GPT-4 became available in ChatGPT in March 2023, while the original public ChatGPT launch occurred in November 2022. ChatGPT is a product and interface, not the name of one single permanent model version.