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I don't know if it's related to this database or does what you're looking for but I've recently learned that https://www.connectedpapers.com and https://www.researchrabbit.ai exist and have started using them (particularly connectedpapers) pretty heavily.

You can also do visualizations with https://scite.ai! The edges of the graphs show exactly what the papers (nodes) said about each other :)

Here's a video: https://www.youtube.com/watch?v=P5J9EgAaai4

That's pretty cool. It made me suddenly think that it would be great if there was a way to use this safely and without going broke while performing peer-review.

Thanks, both seem like good options!

Scholia https://scholia.toolforge.org/ is a frontend to comparable data on Wikidata, a general-purpose knowledge graph. Edit: The OpenAlex website states that a web interface is planned for Summer 2022.

If you go that route, you may also want to check out these community-contributed Python and R libraries: https://docs.openalex.org/api#client-libraries