ChatGPT ChatGPT is your AI chatbot for everyday use Chat with the most advanced AI to explore ideas, solve problems, and learn faster
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 - Your AI Assistant ChatGPT is the world's most popular AI assistant Give it a try! Sign up for free ask ChatGPT anything Get help with your writing, news, web search, planning, and more ChatGPT answers all of your questions
What is ChatGPT? Everything You Need to Know ChatGPT is an advanced artificial intelligence system designed to communicate with humans through natural language It can answer questions, explain complex ideas, generate stories, assist with programming, summarize information, and participate in conversations that feel surprisingly human-like
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 GPT-5 5 Instant also performed better on the MMMU-Pro benchmark which measures multimodal reasoning