The paid version of ChatGPT also offers features like image and voice inputs and integrations with other OpenAI services like the image generator DALL-E. 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).
GPT-4.5
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. 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. The integration used ChatGPT to write prompts for DALL-E guided by conversations with users.
Select a model for your prompt
Stanford researchers reported that GPT-4 “passes a rigorous Turing test, diverging from average human behavior chiefly to be more cooperative.” The company announced a slew of generative AI-powered features to counter OpenAI and Microsoft. GPT-5 was launched on August 7, 2025, and is publicly accessible through ChatGPT, Microsoft Copilot, and via OpenAI’s API.
How to use ChatGPT
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 initially releases this feature to users who pay for the Plus, Team or Enterprise plan. OpenAI announces the ChatGPT Pro plan, a new premium plan for ChatGPT users to access even more features.
Similar apps
It is designed to generate human-like text and can carry out a wide variety of tasks. ChatGPT is a generative artificial intelligence chatbot developed by OpenAI and released in November 2022. It currently uses GPT-5, a generative pre-trained transformer (GPT), to generate text, speech, and images in response to user prompts. I’ve covered the models and modes above, but here’s a reminder of all the core features (as of October 2025).
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- The chatbot can facilitate academic dishonesty, generate misinformation, and create malicious code.
- The integration used ChatGPT to write prompts for DALL-E guided by conversations with users.
- As of 2025, ChatGPT’s website is among the 5 most-visited websites globally, and has over 800 million active weekly users.
- ChatGPT is an artificial intelligence chatbot capable of having conversations with people and generating unique, human-like text responses.
- The fine-tuning process involved supervised learning and reinforcement learning from human feedback (RLHF).
- By January 2023, ChatGPT had become the fastest-growing consumer software application in history, gaining over 100 million users in two months.
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Model versions
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- In June 2023, hundreds of people attended a “ChatGPT-powered church service” at St. Paul’s Church in Fürth, Germany.
- In late March 2023, the Italian data protection authority banned ChatGPT in Italy and opened an investigation.
- 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.
- 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.
- For example, ChatGPT will offer hints, organize content into sections and create custom lessons and quizzes instead of providing a direct answer to students.
- 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.
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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. 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.
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- For example, the new model doubles its context window from 128,000 tokens in GPT-4o to 256,000 tokens in GPT-5.
- Despite its acclaim, the chatbot has been criticized for its limitations and potential for unethical use.
- GPT-4, which was released on March 14, 2023, was made available via API and for premium ChatGPT users.
- For more common languages, AI translators like ChatGPT did better than Google Translate, while for “niche” languages (Amharic and Tagalog), Google Translate performed better.
- The feature is also still exclusive to ChatGPT users who have a Plus, Team, Enterprise or Education plan.
- It can also critique the user’s writing, summarize long documents and translate text from one language to another.
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Answer Questions
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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”. As of July 2025, Science expects authors to release in full how AI-generated content is used and made in their work. In late March 2023, the Italian data protection authority banned ChatGPT in Italy and opened an investigation.
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Training
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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. In June 2023, hundreds of people attended a “ChatGPT-powered church service” at St. Paul’s Church in Fürth, Germany. Robin Bauwens, an assistant professor at Tilburg University, found that a ChatGPT-generated peer review report on his article mentioned nonexistent studies. Geoffrey Hinton, one of the “fathers of AI”, voiced concerns that future AI systems may surpass human Spinando casino intelligence. A 2023 study reported that GPT-4 obtained a better score than 99% of humans on the Torrance Tests of Creative Thinking.