OpenAI chose to publicly discuss GPT-1, 2, 3 and 4 rather than build in secret until GPT-5.

True: the record shows OpenAI publicly announced or discussed each of GPT-1, GPT-2, GPT-3 and GPT-4 (via papers, blog posts or releases) around the time it was developed, rather than keeping them secret until a later model. Mostly true: all four were discussed publicly, but one was disclosed only partially or after a notable delay (e.g. GPT-2 staged release, GPT-4's limited technical details). Mixed: about half of the four models were publicly discussed in a timely way. Mostly false: most were kept undisclosed until much later. False: OpenAI did not publicly discuss these models before the launch of a successor.

Set before the research began.

1. E1 Better language models and their implications - OpenAI OpenAI · 14 February 2019 Own record

   “Due to our concerns about malicious applications of the technology, we are not releasing the trained model.”

2. E2 NeurIPS Poster Language Models are Few-Shot Learners NeurIPS · 1 October 2020

   “Specifically, we train GPT-3, an autoregressive language model with 175 billion parameters, 10x more than any previous non-sparse language model, and test its performance in the few-shot setting.”

3. E3 GPT‑4 - OpenAI OpenAI · 14 March 2023 Own record

   “We’ve created GPT-4, the latest milestone in OpenAI’s effort in scaling up deep learning.”

4. E4 Awesome-LLM-papers/00_Organizations/0_OpenAI/2018 (OpenAI) (Arxiv) [GPT-1] Improving Language Understanding by Generative Pre-Training.pdf at main · guyulongcs/Awesome-LLM-papers GitHub (user repository guyulongcs/Awesome-LLM-papers)

   “2018 (OpenAI) (Arxiv) [GPT-1] Improving Language Understanding by Generative Pre-Training.pdf”

OpenAI publicly announced GPT-2 in February 2019, but said it was "not releasing the trained model," so that disclosure was partial (E1). GPT-3 was described in a paper accepted at NeurIPS 2020 (E2), and OpenAI announced GPT-4 in March 2023 (E3). For GPT-1, the only evidence is a third-party reading list that files it as a 2018 OpenAI arXiv paper (E4); that list is weak support. Together this indicates that GPT-2, GPT-3 and GPT-4 were discussed publicly, with GPT-2 disclosed only partly, and gives weaker support for GPT-1, which the criteria grade as mostly true.