ChatGPT ChatGPT is your AI chatbot for everyday use Chat with the most advanced AI to explore ideas, solve problems, and learn faster
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Welcome back - OpenAI Explore developer resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's platform
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
GPT-5. 1: A smarter, more conversational ChatGPT - OpenAI GPT‑5 1 Instant: our most-used model, now warmer, more intelligent, and better at following your instructions GPT‑5 1 Thinking: our advanced reasoning model, now easier to understand and faster on simple tasks, more persistent on complex ones
Account, login and billing - OpenAI Help Center ChatGPT and API services in unsupported countries and territories Flexible pricing for the Enterprise, Edu, and Business plans Frequently asked questions and key information about flexible pricing
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