By January 2023, ChatGPT had become the fastest-growing consumer software application in history, gaining over 100 million users in two months. As of 2025, ChatGPT’s website is among the 5 most-visited websites globally, and has over 800 million active weekly users.
Model versions
I’ve covered the models and modes above, but here’s a reminder of all the core features (as of October 2025). This is used to not only help the model determine the best output, but it also helps improve the training process, enabling it to answer questions more effectively. Here’s how it works, its use cases, how to access it, its limitations, notable updates and future outlook. Recently, OpenAI made ChatGPT’s image generation capabilities free for all users, albeit with a limited number of monthly uses. Beyond text, ChatGPT can generate original images and videos through its integrated tools. If you prefer to keep using Dall-E 3 (its first image generator), you can still access it through the Dall-E GPT.
ChatGPT is an artificial intelligence chatbot capable of having conversations with people and generating unique, human-like text responses. Many individuals use ChatGPT and comparable large language models (LLM) for mental health and emotional support. OpenAI acknowledged that there have been « instances where our 4o model fell short in recognizing signs of delusion or emotional dependency », and reported that it is working to improve safety. ChatGPT is a chatbot and AI assistant built on large language model technology. It is designed to generate human-like text and can carry out a wide variety of tasks. It can also be fine-tuned for specific use cases such as legal documents or medical records, where the model is trained on domain-specific data.
OpenAI o1 Model Family Announcement (September
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- While users cannot checkout inside ChatGPT, they are redirected to the merchant’s website when they click on the link.
- ChatGPT also provided an outline of how human reviewers are trained to reduce inappropriate content and to attempt to provide political information without affiliating with any political position.
- As of July 2025, Science expects authors to release in full how AI-generated content is used and made in their work.
- Robin Bauwens, an assistant professor at Tilburg University, found that a ChatGPT-generated peer review report on his article mentioned nonexistent studies.
- I’ve covered the models and modes above, but here’s a reminder of all the core features (as of October 2025).
- OpenAI announces the ChatGPT Pro plan, a new premium plan for ChatGPT users to access even more features.
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OpenAI’s outsourcing partner was Sama, a training-data company based in San Francisco, California. ZDNET’s recommendations are based on many hours of testing, research, and comparison shopping. And we pore over customer reviews to find out what matters to real Romibet people who already own and use the products and services we’re assessing.
Select a model for your prompt
Despite this, users may « jailbreak » ChatGPT with prompt engineering techniques to bypass these restrictions. […] It’s also a way to understand the « hallucinations », or nonsensical answers to factual questions, to which large language models such as ChatGPT are all too prone. These limitations may be revealed when ChatGPT responds to prompts including descriptors of people. In one instance, ChatGPT generated a rap in which women and scientists of color were asserted to be inferior to white male scientists. GPT-4, which was released on March 14, 2023, was made available via API and for premium ChatGPT users.
Training
Similar to a phone’s auto-complete feature, ChatGPT uses a prediction model to guess the most likely next word based on the context it has been provided. ChatGPT Team lets companies create shared workspaces with settings that apply to all users, as well as the ability to share proprietary data sets. OpenAI announces the ChatGPT Pro plan, a new premium plan for ChatGPT users to access even more features.
Artificial Intelligence
The language models used in ChatGPT are specifically optimized for dialogue and were trained using reinforcement learning from human feedback (RLHF). GPT-4o is the most advanced version accessible to everyone, handling text, images and audio as input and output. ChatGPT relies on large language models (LLMs), enabling it to understand your questions and provide human-like responses. In late March 2023, the Italian data protection authority banned ChatGPT in Italy and opened an investigation. OpenAI said it has taken steps to effectively clarify and address the issues raised; an age verification tool was implemented to ensure users are at least 13 years old.
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- In January 2023, the International Conference on Machine Learning banned any undocumented use of ChatGPT or other large language models to generate any text in submitted papers.
- ChatGPT is an artificial intelligence chatbot capable of having conversations with people and generating unique, human-like text responses.
- ChatGPT can produce correct answers to medical exam and licensing questions, for example the United States Medical Licensing Examination and the Specialty Certificate Examination in Dermatology.
- In June 2023, hundreds of people attended a « ChatGPT-powered church service » at St. Paul’s Church in Fürth, Germany.
- For more common languages, AI translators like ChatGPT did better than Google Translate, while for « niche » languages (Amharic and Tagalog), Google Translate performed better.
- It is designed to generate human-like text and can carry out a wide variety of tasks.
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Accessibility and integrations
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The company announced a slew of generative AI-powered features to counter OpenAI and Microsoft. In July, OpenAI released ChatGPT agent, an AI agent that can perform multi-step tasks. It is capable of writing software, answering codebase questions, running tests, and proposing pull requests. The languages tested were Polish, French, Korean, Spanish, Arabic, Tagalog, and Amharic. For more common languages, AI translators like ChatGPT did better than Google Translate, while for « niche » languages (Amharic and Tagalog), Google Translate performed better. None of the tested services were a perfect replacement for a fluent human translator.
- ChatGPT relies on large language models (LLMs), enabling it to understand your questions and provide human-like responses.
- Beyond text, ChatGPT can generate original images and videos through its integrated tools.
- In 2025, OpenAI added several features to make ChatGPT more agentic (capable of autonomously performing longer tasks).
- This often leads to what experts call “hallucinations,” where the output generated is stylistically correct, but factually wrong.
- In late March 2023, the Italian data protection authority banned ChatGPT in Italy and opened an investigation.
- In the reinforcement learning stage, human trainers first ranked responses generated by the model in previous conversations.
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Is ChatGPT accurate?
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So far, users can make single-item purchases from domestic sellers on online marketplace Etsy, as well as some merchants on Shopify’s e-commerce platform. In August 2025, OpenAI released GPT-5, its fastest and smartest model to date, and the current language model for ChatGPT. OpenAI claims that GPT-5 outperforms past models in math, real-world coding, multimodal understanding and health knowledge, and is also less likely to hallucinate or make false claims. Teachers are concerned that students will use it to cheat, prompting some schools to completely block access to it. Not only can ChatGPT generate working computer code of its own (in many different languages), but it can also translate code from one language to another, and debug existing code.