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.

How much does ChatGPT cost?

OpenAI CEO Sam Altman said that users were unable to see the contents of the conversations. ChatGPT’s training data only covers a period up to the cut-off date, so it lacks knowledge of recent events. This tool allows a user to customize ChatGPT’s behavior for a specific use case.

Select a mode for your prompt

ChatGPT is becoming a default interface for how people interact with AI and even how they get information from the internet. ChatGPT faces ongoing legal challenges related to industry concerns regarding the ethics and the legality of data sourcing for AI training. “You can create systems that can fool people into thinking that this thing that you’re talking to is human,” Jaffri tells CNET. That’s one reason why it sometimes “hallucinates” or generates confident-sounding but incorrect information. It was trained on massive amounts of data from books and the internet — websites, Wikipedia, Reddit threads, news sites and much, much more.
The Pro launch coincided with the release of the o1 model, providing unlimited access to o1 and advanced voice mode. Users interact with ChatGPT through conversations which consist of text, audio, and image inputs and outputs. OpenAI collects data from ChatGPT users to further train and fine-tune its services.

Create Content

{

{
• ChatGPT is based on GPT foundation models that have been fine-tuned for conversational assistance.

|}

• And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing.

{

• 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.

|}{

• […] 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.

|}

• Despite its acclaim, the chatbot has been criticized for its limitations and potential for unethical use.
• 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.

|}
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.

Is ChatGPT accurate?

The company also partnered with PayPal, one of the largest payment processing services in the world, to let users pay for their shopping directly within ChatGPT. ChatGPT is powered by a large language model made up of neural networks trained on a massive amount of information from the internet, including Wikipedia articles and research papers. OpenAI has attempted to address these issues with enhanced data protection measures. Your prompts (on Free, Plus and Pro plans) may be used to train the model unless you opt out in settings.

{
• In 2025, OpenAI added several features to make ChatGPT more agentic (capable of autonomously performing longer tasks).

|}{

• In the reinforcement learning stage, human trainers first ranked responses generated by the model in previous conversations.

|}

• 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.

|}

• 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.

ChatGPT pricing

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 Romibet services were a perfect replacement for a fluent human translator.
{

App support

|}
In June 2023, hundreds of people attended a “ChatGPT-powered church service” at St. Paul’s Church in Fürth, Germany. Geoffrey Hinton, one of the “fathers of AI”, voiced concerns that future AI systems may surpass human intelligence. 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-5 was launched on August 7, 2025, and is publicly accessible through ChatGPT, Microsoft Copilot, and via OpenAI’s API. Released in February 2025, GPT-4.5 was described by Altman as a “giant, expensive model”. In March 2023, a bug allowed some users to see the titles of other users’ conversations.

• 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.

{

• 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 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.

|}

• ChatGPT is an artificial intelligence chatbot capable of having conversations with people and generating unique, human-like text responses.

{

Training

|}
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. ChatGPT is based on GPT foundation models that have been fine-tuned for conversational assistance. The fine-tuning process involved supervised learning and reinforcement learning from human feedback (RLHF). In the case of supervised learning, the trainers acted as both the user and the AI assistant. In the reinforcement learning stage, human trainers first ranked responses generated by the model in previous conversations.