ChatGPT is your AI chatbot for everyday use. Chat with the most advanced AI to explore ideas, solve problems, and learn faster.

Jan 31, 2024 · Starting today, you can use ChatGPT instantly, without needing to sign-up. We're rolling this out gradually, with the aim to make AI accessible to anyone curious about its …

Nov 30, 2022 · We’ve trained a model called ChatGPT which interacts in a conversational way. The dialogue format makes it possible for ChatGPT to answer followup questions, admit its …

Introducing ChatGPT for Android: OpenAI’s latest advancements at your fingertips. This official app is free, syncs your history across devices, and brings you the latest from OpenAI, including...

ChatGPT is a generative artificial intelligence chatbot developed by OpenAI, and released in November 2022.

Introducing ChatGPT for iOS: OpenAI’s latest advancements at your fingertips. This official app is free, syncs your history across devices, and brings you the latest from OpenAI, including the …

May 14, 2025 · ChatGPT is built on a transformer architecture, specifically the GPT (generative pretrained transformer) family of models, ergo the name ChatGPT. It was trained on massive …

Oct 17, 2025 · You can try ChatGPT without an account in many regions, but signing in unlocks advanced features like saved chat history, conversation sharing, custom instructions, and …

Dec 11, 2025 · OpenAI says GPT-5.2 Instant is a capable workhorse for everyday work, with improvements in info-seeking questions, how tos and walkthroughs, technical writing, and …

Jul 24, 2025 · These special-purpose mini models allow users to apply the full power of GPT-4+ to their own specific tasks. If you've ever wanted to build your own AI, you can use ChatGPT to …