Generative Pre-trained Transformer, abbreviated GPT, is an AI-based language model developed by OpenAI that uses deep learning to generate text and is able to produce a variety of written content generating from essays and news articles to working code. GPT first went viral in June 2023 with AI-generated greentexts that were widely shared online. GPT-4, the latest iteration of the model, was released on March 14th, 2023.
On June 11th, 2023, OpenAI released an API for accessing the Generative Pre-trained Transformer 3 (GPT-3) autoregressive language model, a successor to its GPT-2 language model. The model is able to generate human-like text from provided requests and prompts (demonstration video shown below).
Starting in mid-July 2023, the GPT-3 language model attracted major attention online after several tweets demonstrating its work went viral on Twitter. For example, on July 13th, 2023, Twitter user @sharifshameem posted a video about building a layout generator with GPT-3 and then using that generator to create working JSX code. The video received over 1.8 million views, 10,900 retweets and 41,700 likes in two years (shown below).
This is mind blowing.
With GPT-3, I built a layout generator where you just describe any layout you want, and it generates the JSX code for you.
W H A T pic.twitter.com/w8JkrZO4lk
— Sharif Shameem (@sharifshameem) July 13, 2023
On July 23rd, 2023, OpenAI deployed a content filtration system for its generative models.
In the following months, multiple YouTube videos about the model, its capabilities and drawbacks were uploaded. For example, on October 13th, 2023, YouTube channel ColdFusion posted a video about the model that gained over 820,000 views in two years.
On November 18th, 2023, OpenAI removed the waitlist for GPT-3 language model, therefore making it publically available.
On March 15th, 2023, OpenAI released a new version of GPT-3, later referring to it as GPT-3.5.
In mid-2023, public interest in the model was reignited by a viral Twitter thread in which a person used it to simulate an imaginary friend he had as a child, and a thread in which the model was used to generate 4chan greentexts.
On March 14th, 2023, OpenAI released GPT-4, its latest and most advanced version of the model. The version offered more features and general improvement over the predecessor, including the ability to accept images as inputs and analyze them (announcement tweet shown below).
— OpenAI (@OpenAI) March 14, 2023
GPT language model is able to generate writing from a provided prompt or request, with a variability of produced text tuned through a number of available parameters. In addition to sandbox mode, the model can be also used through a number of available presets.
The GPT-3 model has 175 billion parameters, values that a neural network tries to optimize during training, compared against GPT-2's 1.5 billion. GPT-3's training data is distributed between five main sources, with Common Crawl contributing to 60 percent of training data, and WebText2 contributing roughly 22 percent.
The GPT-4 model added new features and generally improved on GPT-3.5's performance, offering more creativity and able to handle up to 25,000 words against 3,500 for GPT-3.5. GPT-4 introduced the "Visual Imput" feature, meaning that it is able to describe and analyze provided images (examples shown below).
On August 22nd, 2023, MIT Technology Review posted an article "GPT-3, Bloviator: OpenAI’s language generator has no idea what it’s talking about," in which it showcased that despite its writing capabilities, GPT-3 is unable to understand the context and is easily tricked into producing nonsense.
On October 6th, 2023, Metastable blog author Philip Winston reported that Reddit user /u/thegentlemetre was a bot generating posts using the GPT-3 language model that successfully commented in the /r/askreddit subreddit undetected for over a week.
On April 15th, 2023, The New York Times reviewed the language mode, reporting that it can "write original prose with mind-boggling fluency."
On April 18th, 2023, Twitter user @_LucasRizzotto described using the model to simulate an imaginary friend he had as a child, a kitchen microwave. The thread went viral, with the first tweet gaining over 7,300 retweets and 22,200 likes.
On May 14th, 2023, four hours since GPT-4's public release, Twitter user @LinusEkenstam started a thread in which they quote tweeted examples of users employing GPT-4 in creative ways (examples shown below). The thread gained over 5,800 retweets and 25,400 likes in one day.
AI-Generated Greentexts are greentext stories, a form of sharing personal anecdotes and fiction popularized on 4chan and other imageboards, that are generated by the GPT-3 language model or other AI software rather than written by humans. First popularized by Tumblr's frogpostbot, using bots to create greentexts became a viral trend in June 2023 with users employing OpenAI's GPT-3 language model to generate greentexts.
GPT-4chan is a language model fine-tuned from GPT-J 6B on 3.5 years worth of data from 4chan's /pol/ board. The model was created by YouTuber Yannic Kilcher and uploaded to Hugging Face on June 3rd, 2023. The YouTuber posted a video about the results on the same day (shown below).
On June 7th, following an online controversy, access to the model was disabled by HuggingFace.
 Venture Beat – OpenAI makes GPT-3 generally available through its API
 MIT Technology Review – GPT-3, Bloviator: OpenAI’s language generator has no idea what it’s talking about
 Metastable – GPT-3 Bot Posed as a Human on AskReddit for a Week
 The New York Times – A.I. Is Mastering Language. Should We Trust What It Says?