ChatGPT is an artificial intelligence chatbot capable of having conversations with people and generating unique, human-like text responses. By using a large language model (LLM), which is trained on vast amounts of data from the internet, ChatGPT can answer questions, compose essays, offer advice and write code in a fluent and natural way. Its capabilities include answering follow-up questions, writing and debugging computer programs, translating, and summarizing text.
ChatGPT: Everything you need to know
Other companies such as Virgin Atlantic and Klarna use the AI to improve their customer support services by incorporating ChatGPT into their business practices. ChatGPT handles an extraordinarily wide range of tasks due to its level of access to internet sources and training. The company began as a not-for-profit research lab devoted to advancing AI for the common good of humanity. Over time, it spawned a for-profit subsidiary (OpenAI Global LLC) to attract capital investment, with Microsoft as a major backer.
Advanced voice mode enables ChatGPT users to have more natural-sounding conversations when interacting with the chatbot. OpenAI initially releases this feature to users who pay for the Plus, Team or Enterprise plan. OpenAI announces the ChatGPT Pro plan, a new premium plan for ChatGPT users to access even more features. The plan costs $200 per month and gives users access to Open AI o1, o1-mini, GPT-4o and advanced voice mode. In August 2025, OpenAI released GPT-5, its fastest and smartest model to date, and the current language model for ChatGPT.
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According to OpenAI’s privacy policy, ChatGPT does not use end-to-end encryption, and all chat histories are stored and may be used to train future models. Consequently, users are advised not to "share sensitive information, such as passwords, credit card numbers, or similar information, via the chat". This means that anything you tell ChatGPT or any files uploaded onto the platform are kept by OpenAI.
GPT-5 also added enhanced multimodal capabilities with improvements to email, calendar and code environment integrations. In 2025, the UK government struck a partnership with OpenAI to deploy advanced AI models in security research and to explore AI’s role in public services. PwC stands out on the corporate front as OpenAI’s first reseller and largest enterprise user, deploying ChatGPT Enterprise to more than 100,000 staff across the UK and US. The free tier is fine for casual users, but if ChatGPT is built into your workflow, you’ll need to pay for a subscription to unlock the faster processing and greater reliability of the latest models. From writing content to generating website code, ChatGPT is a hugely capable tool that allows you to get a lot done simply by writing your queries in natural human language.
Neither ZDNET nor the author are compensated for these independent reviews. Indeed, we follow strict guidelines that ensure our editorial content is never influenced by advertisers. In order to sift through terabytes of internet data and transform that into a text response, ChatGPT uses a technique called transformer architecture (hence the "T" in its name).
What is ChatGPT: everything you should know about the AI chatbot
You can browse through existing GPTs in the GPT store, or create your own to suit your project and needs. ChatGPT Tasks is a feature that allows you to schedule actions and set reminders within ChatGPT. You can create one-time or recurring tasks, such as daily briefings or regular reminders, and receive notifications upon task completion. This feature is currently in beta and available with the Plus plan or higher. OpenAI has made it possible to use ChatGPT instantly without creating an account.
To get started with ChatGPT, simply head to chat.openai.com or download the mobile app from the Apple App Store or Google Play Store. While both the site and app allow you to access custom GPTs, some features, like the Sora video generator, are currently exclusive to the web browser. OpenAI has already gotten a glimpse of this future through its o1 model, and the results have been mixed. According to research conducted by OpenAI and AI safety organization Apollo Research, o1 provides more intelligent answers than GPT-4o while also attempting to deceive users more than any major
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Since its initial launch, OpenAI has integrated additional features, including plugins, web browsing capabilities, and image generation. It has been lauded as a revolutionary tool that could transform numerous professional fields. At the same time, its
release prompted extensive media coverage and public debate about the nature of creativity and the future of knowledge work. It’s capable of carrying on conversations with human users and generating a wide range of text outputs including recipes, computer code, essays and personal letters. It can also critique the user’s writing, summarize long documents and translate text from one language to another.