As mentioned in another comment, I've put together an embeddings database using the arxiv dataset (https://huggingface.co/NeuML/txtai-arxiv) recently.
For those interested in the literature search space, a couple other projects I've worked on that may be of interest.
annotateai (https://github.com/neuml/annotateai) - Annotates papers with LLMs. Supports searching the arxiv database mentioned above.
paperai (https://github.com/neuml/paperai) - Semantic search and workflows for medical/scientific papers. Built on txtai (https://github.com/neuml/txtai)
paperetl (https://github.com/neuml/paperetl) - ETL processes for medical and scientific papers. Supports full PDF docs.