In March 2025, OpenAI updated ChatGPT to generate images using GPT-4o instead of DALL-E. It allows ChatGPT to search the web in an attempt to make more accurate and up-to-date responses. To prevent offensive outputs from being presented to and produced by ChatGPT, queries are filtered through the OpenAI «Moderation endpoint» API (a separate GPT-based AI).
GPT Store
The Pro launch coincided with the release of the o1 model, providing unlimited access to o1 and advanced voice mode. 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. 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. It is designed to generate human-like text and can carry out a wide variety of tasks.
GPT-4
The term «hallucination» as applied to LLMs is distinct from its meaning in psychology, and the phenomenon in chatbots is more similar to confabulation or bullshitting. 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. In July 2025, OpenAI released ChatGPT agent, an AI agent that can perform multi-step tasks. According to TechCrunch, it is a service based on o3 that combines advanced reasoning and web search capabilities to make comprehensive reports within 5 to 30 minutes.
Features
Despite decades of using AI, Wall Street professionals report that consistently beating the market with AI, including recent large language models, is challenging due to limited and noisy financial data. In August 2024, the FTC voted unanimously to ban marketers from using fake user reviews created by generative AI chatbots (including ChatGPT) and influencers paying for bots to increase follower counts. The FTC asked OpenAI for comprehensive information about its technology and privacy safeguards, as well as any steps taken to prevent the recurrence of situations in which its chatbot generated false and derogatory content about people. ChatGPT has never been publicly available in China because OpenAI prevented Chinese users from accessing their site. Kevin Roose of The New York Times called it «the best artificial intelligence chatbot ever released to the general public». 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.
Age 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. In one instance, ChatGPT generated a rap in which women and scientists of color were asserted to be inferior to white male scientists. The reward model of ChatGPT, designed around human oversight, can be over-optimized and thus hinder performance, in an example of an optimization pathology known as Goodhart’s law. 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.
A May 2023 statement by hundreds of AI scientists, AI industry leaders, and other public figures demanded that «mitigating the risk of extinction from AI should be a global priority». In late March 2023, the Italian data protection authority banned ChatGPT in Italy and opened an investigation. Stanford researchers reported that GPT-4 «passes a rigorous Turing test, diverging from average human behavior chiefly to be more cooperative.» alvexo forex broker In December 2023, ChatGPT became the first non-human to be included in Nature’s 10, an annual listicle curated by Nature of people considered to have made significant impact in science.
- The laborers were exposed to toxic and traumatic content; one worker described the assignment as «torture».
- In an industry survey, cybersecurity professionals argued that it was attributable to cybercriminals’ increased use of generative artificial intelligence (including ChatGPT).
- ChatGPT is based on GPT foundation models that have been fine-tuned for conversational assistance.
- 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.
- This has led to concern over the rise of what has come to be called «synthetic media» and «AI slop» which are generated by AI and rapidly spread over social media and the internet.
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. These labels were used to train a model to detect such content in the future. These rankings were used to create «reward models» that were used to fine-tune the model further by using several iterations of proximal policy optimization. The ethics of its development, particularly the use of copyrighted content as training data, have also drawn controversy.
In the 2020s, the rapid advancement of deep learning-based generative artificial intelligence models raised questions about the copyright status of AI-generated works, and about whether copyright infringement occurs when such are trained or used. Over many iterations of ChatGPT, plus users maintained more access to better models than the free tier provided, and access to additional features like voice mode. In the reinforcement learning stage, human trainers first ranked responses generated by the model in previous conversations.
- 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.
- In the reinforcement learning stage, human trainers first ranked responses generated by the model in previous conversations.
- Premium users were originally limited in the number of messages they could send to the new model, but OpenAI increased and eventually removed these limits.
- 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.
- Andrew Ng argued that «it’s a mistake to fall for the doomsday hype on AI—and that regulators who do will only benefit vested interests.» Yann LeCun dismissed doomsday warnings of AI-powered misinformation and existential threats to the human race.
Regional responses
The chatbot can facilitate academic dishonesty, generate misinformation, and create malicious code. The service gained 100 million users in two months making it the fastest-growing consumer software application in history. 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).
Contents
In September 2024, OpenAI introduced o1-preview and a faster, cheaper model named o1-mini. In November 2023, OpenAI launched GPT-4 Turbo with a 128,000 token context window. A study presented example attacks on ChatGPT, including jailbreaks and reverse psychology. ChatGPT is programmed to reject prompts that may violate its content policy.
Computer security
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». 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 was intended to reduce hallucinations and enhance pattern recognition, creativity, and user interaction. Released in February 2025, GPT-4.5 was described by Altman as a «giant, expensive model».
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. Despite this, users may «jailbreak» ChatGPT with prompt engineering techniques to bypass these restrictions.
It found that 52% of the responses contained inaccuracies and 77% were verbose. One study analyzed ChatGPT’s responses to 517 questions about software engineering or computer programming posed on Stack Overflow for correctness, consistency, comprehensiveness, and concision. ChatGPT has been used to generate introductory sections and abstracts for scientific articles. Andrew Ng argued that «it’s a mistake to fall for the doomsday hype on AI—and that regulators who do will only benefit vested interests.» Yann LeCun dismissed doomsday warnings of AI-powered misinformation and existential threats to the human race. Juergen Schmidhuber said that in 95% of cases, AI research is about making «human lives longer and healthier and easier.» He added that while AI can be used by bad actors, it «can also be used against the bad actors».
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.
In the case of supervised learning, the trainers acted as both the user and the AI assistant. The fine-tuning process involved supervised learning and reinforcement learning from human feedback (RLHF). It can generate plausible-sounding but incorrect or nonsensical answers, known as hallucinations. The chatbot has also been criticized for its limitations and potential for unethical use. ChatGPT’s website is among the top 5 most-visited websites globally, It has been lauded for its potential to transform numerous professional fields, and instigated public debate about the nature of creativity and the future of knowledge work.
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.» The Guardian questioned whether any content found on the Internet after ChatGPT’s release «can be truly trusted» and called for government regulation. In December 2022, the question-and-answer website Stack Overflow banned the use of ChatGPT for generating answers to questions, citing the factually ambiguous nature of its responses.
