This is the OG Alpaca dataset that was used by Stanford University, but cleaned, fixed and converted into ShareGPT format.
For more information about the original dataset, please see:
https://crfm.stanford.edu/2023/03/13/alpaca.html
The dataset contains exactly 51760 entries, as its name suggests. This is a little bit smaller than the original, which had about a thousand more entries, but those… See the full description on the dataset page:
https://huggingface.co/datasets/SicariusSicariiStuff/Alpaca_51760_Fixed_ShareGPT.