https://techcrunch.com/2023/05/11/ai2-is-developing-a-large-language-model-optimized-for-science/

PaLM 2. GPT-4. The list of text-generating AI practically grows by the day.

Most of these models are walled behind APIs, making it impossible for researchers to see exactly what makes them tick. But increasingly, community efforts are yielding open source AI that’s as sophisticated, if not more so, than their commercial counterparts.