ChatGPT can find more up-to-date information by searching the web, but this doesn't ensure that responses are accurate, as it may access unreliable or misleading websites. 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. A 2025 Sentio University survey of 499 LLM users with self-reported mental health conditions found that 96.2% use ChatGPT, with 48.7% using it specifically for mental health support or therapy-related purposes. At launch, the feature was limited to purchases on Etsy from US users with a payment method linked to their OpenAI account. It was capable of autonomously performing tasks through web browser interactions, including filling forms, placing online orders, scheduling appointments, and other browser-based tasks.

Need a hand finding the right solution?

Samantha Lock of The Guardian noted that it was able to generate "impressively detailed" and "human-like" text. 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. Later reports showed the bug was much more severe than initially believed, with OpenAI reporting that it had leaked users' "first and last name, email address, payment address, the last four digits (only) of a credit card number, and credit card expiration date". Shortly after the bug was fixed, users could not see their conversation history. In March 2023, a bug allowed some users to see the titles of other users' conversations. One such workaround, popularized on Reddit in early 2023, involved making ChatGPT assume the persona of "DAN" (an acronym for "Do Anything Now"), instructing the chatbot that DAN answers queries that would otherwise be rejected by the content policy.

Features

Robin Bauwens, an assistant professor at Tilburg University, found that a ChatGPT-generated peer review report on his article mentioned nonexistent studies. In January 2023, Science "completely banned" LLM-generated text in all its journals; however, this policy was just to give the community time to decide what acceptable use looks like. Some, including Nature and JAMA Network, "require that authors disclose the use of text-generating tools and ban listing a large language model (LLM) such as ChatGPT as a co-author".

• 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.
• Kevin Roose of The New York Times called it "the best artificial intelligence chatbot ever released to the general public".
• The fine-tuning process involved supervised learning and reinforcement learning from human feedback (RLHF).
• 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.
• If you’ve reached your limit, you’ll need to connect to Wi-Fi or purchase more data to download videos.

The uses and potential of ChatGPT in health care has been the topic of scientific publications and experts have shared many opinions. Many companies adopted ChatGPT and similar chatbot technologies into their product offers. The dangers are that "meaningless content and writing thereby becomes part of our culture, particularly on social media, which we nonetheless try to understand or fit into our existing cultural horizon."

Similar apps

If you've reached your limit, you'll need to connect to Wi-Fi or purchase more data to download videos. In July 2024, the American Bar Association (ABA) issued its first formal ethics opinion on attorneys using generative AI. On November 29, Rosário revealed that the bill had been entirely written by ChatGPT, and that he had presented it to the rest of the council without making any changes or disclosing the chatbot's involvement. In Mata v. Avianca, Inc., a personal injury lawsuit filed in May 2023, the plaintiff's attorneys used ChatGPT to generate a legal motion.

Their leaders emphasized their earlier caution regarding public deployment was due to the trust the public places in Google Search. Kelsey Piper of Vox wrote that "ChatGPT is the general public's first hands-on introduction to how powerful modern AI has gotten" and that ChatGPT is "smart enough to be useful despite its flaws". Like GPT-5, it comes with a "Thinking" mode for complex problem-solving and an "Instant" mode for fast responses. As before, OpenAI has not disclosed technical details such as the exact number of parameters or the composition of its training dataset. According to OpenAI, it features reduced hallucinations and enhanced pattern recognition, creativity, and user interaction.

Download the YouTube mobile app

At launch, OpenAI included more than 3 million GPTs created by GPT Builder users in the GPT Store. The integration used ChatGPT to write prompts for DALL-E guided by conversations with users. GPT-4, which was released on March 14, 2023, was made available via API and for premium ChatGPT users.

The chatbot can facilitate academic dishonesty, generate misinformation, and create malicious code. As of 2025, ChatGPT's website is among the top 5 most-visited websites globally, and has over 800 million active weekly users. By January 2023, ChatGPT had become the fastest-growing consumer software application in history, gaining over 100 million users in two months. It is credited with accelerating the AI boom, an ongoing period marked by rapid investment and public attention toward the field of artificial intelligence (AI). Check the settings on your mobile device to ensure you have enabled background data for YouTube.

As of July 2025, Science expects authors to release in full how AI-generated content is used and made in their work. As of 2023, there were several pending U.S. lawsuits challenging the use of copyrighted data to train AI models, with defendants arguing that this falls under fair use. 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. A shadow market has emerged for users to get access to foreign software tools. Kevin Roose of The New York Times called it "the best artificial intelligence chatbot ever released to the general public". GPT-5 was launched on August 7, 2025, and is publicly accessible through ChatGPT, Microsoft Copilot, and via OpenAI's API.

Mobile apps

These limitations may be revealed when ChatGPT responds to prompts including descriptors of people. ChatGPT's training data only covers a period up to the cut-off date, so it lacks knowledge of recent events. The user can interrupt tasks or provide additional instructions as needed. It was controlling a software environment inside a virtual machine with limited internet connectivity and with safety restrictions. According to TechCrunch, it is a service based on o3 cycling tampa that combines advanced reasoning and web search capabilities to make comprehensive reports within 5 to 30 minutes. This tool allows a user to customize ChatGPT's behavior for a specific use case.