Use ChatGPT to answer questions, write, create images, complete work, and code—all in one place. Get started for free or download the app.

Use ChatGPT to answer questions, write, create images, complete work, and code—all in one place. Get started for free or download the app.

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.

GPT-6 Astra: A new generation of intelligence Research 28 min read Introducing ChatGPT Images 2.5 Product 6 min read GPT‑6 Astra System Card ... The Hugging Face incident and the road ahead

OpenAI operates the service on a freemium model. Users can interact with ChatGPT through text, audio, and image prompts. ChatGPT was quickly adopted, reaching 100 million monthly active users two months after its release and 900 million weekly active users in February 2026.

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Download the ChatGPT app for Windows, Mac, iPhone, and Android. Access ChatGPT Work and Codex, use voice conversations, create images, and connect your files and apps.

Training with human feedback We incorporated more human feedback, including feedback submitted by ChatGPT users, to improve GPT‑4’s behavior. We also worked with over 50 experts for early feedback in domains including AI safety and security.

ChatGPT thinks harder on complex tasks and asks relevant follow-up questions to keep work moving. Every employee can get expert-level results without switching models.

Try ChatGPT Free today and use AI to write, learn, plan, and get quick answers—at no cost.