ChatGPT
Japanese ChatGPT（チャットジーピーティー）
ChatGPT is a conversational AI service from OpenAI in the US that writes answers and text when you ask questions or give it tasks. Its answers can be wrong and what you type leaves your company, so decide what to give it and what to keep out.
ChatGPT is like an AI assistant you talk to by typing. You can ask it questions, have it draft emails or summaries, or sort out notes, all as if you were chatting. You can start for free, and there are paid plans such as Go, Plus and Pro that unlock different features and models. Names and features change often, so check the official information.
Watch out Japan's Personal Information Protection Commission warns that generative AI answers can contain inaccurate content and that personal information you type may be used for machine learning. Keep customer names and contact details out of it, and before using it for work, read the terms of use and privacy policy to see how your input is handled.
Source: Personal Information Protection Commission of Japan, Alert on the Use of Generative AI Services (June 2, 2023); Apple App Store, ChatGPT app by OpenAI OpCo, LLC (checked November 4, 2026)