Generative Pre-trained Transformer 4 (GPT-4) is a large language model developed by OpenAI and the fourth in its series of GPT foundation models. In September 2025, following the suicide of a 16-year-old, OpenAI said it planned to add restrictions for users under 18, including the blocking of graphic sexual content and the prevention of flirtatious talk. It was capable of autonomously performing tasks through web browser interactions, including filling forms, placing online orders, scheduling appointments, and other browser-based tasks. These images are generated with C2PA metadata, which can be used to verify that they are AI-generated.
At launch, OpenAI included more than 3 million GPTs created by GPT Builder users in the GPT Store. In January 2024, OpenAI launched the GPT Store, a marketplace for GPTs. ChatGPT’s Mandarin Chinese abilities were lauded, but the ability of the AI to produce content in Mandarin Chinese in a Taiwanese accent was found to be “less than ideal” due to differences between mainland Mandarin Chinese and Taiwanese Mandarin. However, no machine translation services match human expert performance.

What is the latest version of ChatGPT?

It continues by saying “The model can understand and respond to user input in a way that mimics human conversation, allowing for more natural and engaging interactions. By being trained on about 45 terabytes of text from the Internet, the GPT-3 language model used by ChatGPT calculates that some sequences of words are more likely to occur than others. ChatGPT, software that allows a user to ask it questions using conversational, or natural, language. The ChatGPT-generated avatar told the people, “Dear friends, it is an honor for me to stand here and preach to you as the first artificial intelligence at this year’s convention of Protestants in Germany”. Chris Granatino, a librarian at Seattle University, noted that while ChatGPT can generate content that seemingly includes legitimate citations, in most cases those citations are not real or largely incorrect. As of July 2025, Science expects authors to release in full how AI-generated content is used and made in their work.
Within five days of its introduction, more than one million users had signed up for a free account to interact with ChatGPT. For example, “the cat sat on the mat” is more likely to occur in English than “sat the the mat cat on” and thus would be more likely to appear in a ChatGPT response. Judges in the US and Pakistan have endorsed using ChatGPT to investigate legal questions during a case. In an American civil lawsuit, attorneys were sanctioned for filing a legal motion generated by ChatGPT containing fictitious legal decisions. In November 2025, 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.
What started as a tool to supercharge productivity through writing essays and code with short text prompts has evolved into a behemoth with 300 million weekly active users. ChatGPT, OpenAI’s text-generating AI chatbot, has taken the world by storm since its launch in November 2022. Settle a dinner table debate, or practice a new language. Just keep in mind that advanced features, history/memory, and higher limits require an account. It can take detailed prompts and produce realistic images in minutes.

• A new report from app analytics firm Appfigures found that over half of ChatGPT’s mobile users are under age 25, with users between ages 50 and 64 making up the second largest age demographic.
• The integration used ChatGPT to write prompts for DALL-E guided by conversations with users.
• MCP, an open-source standard, helps AI models generate more accurate and suitable responses to specific queries, and lets developers create bidirectional links between data sources and AI applications like chatbots.
• The partnership will let users create AI videos using hundreds of Disney-owned characters, costumes, and props.
• Scientists at the University of California, Riverside, estimated in 2023 that a series of 5 to 50 prompts to ChatGPT needs approximately 0.5 liters (0.11 imp gal; 0.13 U.S. gal) of water for Microsoft servers’ cooling.
• These labels were used to train a model to detect such content in the future.
• OpenAI has added a few features to its ChatGPT search, its web search tool in ChatGPT, to give users an improved online shopping experience.

Training

Geoffrey Hinton, one of the “fathers of AI”, voiced concerns that future AI systems may surpass human intelligence. In 2025, Israel signed a $6M contract with the US based firm Clock Tower X that aimed to influence ChatGPT, Gemini and Grok by taking advantage of retrieval-augmented generation. In October 2025, OpenAI banned accounts suspected to be linked to the Chinese government for violating the company’s national security policy. 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. In late March 2023, the Italian data protection authority banned ChatGPT in Italy and opened an investigation. ChatGPT has never been publicly available in China because OpenAI prevented Chinese users from accessing their site.

• Developers can use GPT-4.5 through OpenAI’s API until July 14; then, they will need to switch to GPT-4.1, which was released on April 14.
• In July 2023, the FTC launched an investigation into OpenAI, the creator of ChatGPT, over allegations that the company scraped public data and published false and defamatory information.
• Unlike other AI browsers, Atlas is open to all users and will soon come to Windows, iOS, and Android, as OpenAI aims to make ChatGPT the go-to tool for browsing the web.
• Many companies adopted ChatGPT and similar chatbot technologies into their product offers.
• The chatbot uses GPT-4, a large language model that uses deep learning to produce human-like text.

GPT-4.5

OpenAI unveiled Pulse, a new ChatGPT feature that delivers personalized morning briefings overnight, encouraging users to start their day with the app. OpenAI launched a new AI shopping feature in ChatGPT ahead of the peak holiday shopping window to help users research potential purchases. On the same day, Disney notably launched a lawsuit against Google alleging “massive” copyright infringement occurring in its AI models. Free users are limited in how many images they can generate per day or in a rolling window (see OpenAI’s support page for current rate limits).
For instance, an analyst could use the company’s slide deck and documents to develop an investment thesis. OpenAI upgraded ChatGPT’s conversational voice mood for all paid users across different markets and platforms. O3-pro is available for ChatGPT and Team users and in the API, while Enterprise and Edu users will get access in the third week of June. In addition to that, the chatbot requires 0.34 watt-hours of electricity to operate. The participants were asked to write multiple SAT essays using tools such as OpenAI’s ChatGPT, the Google search engine, or without any tools. They found that ChatGPT users showed minimal brain engagement and consistently fell short in neural, linguistic, and behavioral aspects.

Select a model for your prompt

Users interact with ChatGPT through conversations which consist of text, audio, and image inputs and outputs. ChatGPT is frequently used for translation and summarization tasks, and can simulate interactive environments such as a Linux terminal, a multi-user chat room, or simple text-based games such as tic-tac-toe. The laborers were exposed to toxic and traumatic content; one worker described the assignment as “torture”.
ChatGPT is a generative artificial intelligence chatbot developed by foxygold casino OpenAI.

OpenAI reaches 1 million business clients in record time

At launch, the feature was limited to purchases on Etsy from US users with a payment method linked to their OpenAI account. OpenAI has emplaced additional safeguards to prevent what the company deems to be harmful image generation. One of the most significant improvements was in the generation of text within images, which is especially useful for branded content. In March 2025, OpenAI updated ChatGPT to generate images using GPT Image instead of DALL-E. In October 2023, OpenAI’s image generation model DALL-E 3 was integrated into ChatGPT. In November 2023, OpenAI released GPT Builder a tool for users to customize ChatGPT’s behavior for a specific use case.
A new report from app analytics firm Appfigures found that over half of ChatGPT’s mobile users are under age 25, with users between ages 50 and 64 making up the second largest age demographic. OpenAI says it collects user posts from the subreddit and asks its AI models to write replies, in a closed environment, that would change the Reddit user’s mind on a subject. OpenAI used the subreddit r/ChangeMyView to measure the persuasive abilities of its AI reasoning models.
In September 2025, OpenAI added a feature called Pulse, which generates a daily analysis of a user’s chats and connected apps such as Gmail and Google Calendar. In December 2024, OpenAI launched a new feature allowing users to call ChatGPT with a telephone for up to 15 minutes per month for free. ChatGPT is a chatbot and AI assistant built on large language model (LLM) technology. OpenAI’s outsourcing partner was Sama, a training-data company based in San Francisco, California.

A new MIT study suggests that ChatGPT might be harming critical thinking skills

In July 2023, the FTC launched an investigation into OpenAI, the creator of ChatGPT, over allegations that the company scraped public data and published false and defamatory information. Italian regulators assert that ChatGPT was exposing minors to age-inappropriate content, and that OpenAI’s use of ChatGPT conversations as training data could violate Europe’s General Data Protection Regulation. 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. GPT-4o’s ability to generate images was released later, in March 2025, when it replaced DALL-E 3 in ChatGPT.
OpenAI has launched a new feature for ChatGPT deep research to analyze code repositories on GitHub. The coding agent may take anywhere from one to 30 minutes to complete tasks such as writing simple features, fixing bugs, answering questions about your codebase, and running tests. The startup has launched an update to Advanced Voice that enables users to converse with ChatGPT out loud in a more natural and fluid sound. OpenAI has unveiled o3-pro, an enhanced version of its o3, a reasoning model that the chatGPT maker launched earlier this year.
ChatGPT is programmed to reject prompts that may violate its content policy. In one instance, ChatGPT generated a rap in which women and scientists of color were asserted to be inferior to white male scientists. OpenAI has sometimes mitigated this effect by updating the training data. ChatGPT’s training data only covers a period up to the cut-off date, so it lacks knowledge of recent events. In July 2025, OpenAI released ChatGPT agent, an AI agent that can perform multi-step tasks.