Introducing ChatGPT - OpenAI
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 mistakes, challenge incorrect premises, and reject inappropriate requests.

ChatGPT - Free download and install on Windows | Microsoft Store
Do more on your PC with ChatGPT: · Instant answers—Use the [Alt + Space] keyboard shortcut for faster access to ChatGPT · Chat with your computer—Use Advanced Voice to chat with your computer in real-time and get hands-free advice and answers while you work.

ChatGPT - Wikipedia
ChatGPT is a generative artificial intelligence chatbot developed by OpenAI. Originally released in November 2022, the product uses large language models —specifically generative pre-trained transformers (GPTs)—to generate text, speech, and images in response to user prompts.

‎ChatGPT App - App Store
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 new image generator.

ChatGPT - Apps on Google Play
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...

GPT 5.5 Instant Becomes ChatGPT Default Model in 2026
The new ChatGPT default model also performed better than its predecessor in internal tests. In the AIME 2025 mathematics test, the model scored 81.2, which is a notable increase from GPT-5.3 Instant’s 65.4.

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