The most widely used general-purpose AI chat assistant
ChatGPT is OpenAI's conversational AI assistant built on the GPT family of large language models. It handles questions and answers, drafting and editing, translation, code generation, data analysis and image understanding from a single chat window. It keeps context across many turns, accepts documents and images as input, and extends itself through custom GPTs, web browsing and a Python-capable data analysis mode. Thanks to the largest third-party integration ecosystem of any AI assistant, it is usually the first stop for both casual users and developers wiring AI into their own products.
Last updated: 2026-09-20. This site only provides an index; for exact features, pricing, and licensing, see the official website.
everyday Q&A, writing and editing, coding assistance, study support and office productivity
If you're comparing similar products, check the alternatives below, or browse all tools in the AI Chat Assistants category.
Yes. The free tier covers core chat plus file and image analysis with usage limits. Paid tiers raise those limits, unlock the stronger models and add features such as custom GPTs and higher-quality data analysis.
Yes. It reads and writes Chinese well enough for drafting, polishing, translation and business writing, though it still trails English slightly for highly specialised or literary work.
The most reliable wins are drafting emails and reports, summarising long documents, cleaning spreadsheet data, generating and explaining code, preparing study material and brainstorming campaign or product ideas.
AI assistant specialising in long documents and careful reasoning
Google's natively multimodal AI assistant
Open-source desktop and Docker app for private chat over your own documents
Desktop and mobile chat client that runs on your own API keys or a hosted plan