Here’s a US study that has it at $2.56 for every $1. https://news.harvard.edu/gazette/story/2025/03/nih-funding-delivers-exponential-economic-returns/ These analyses are hard to compare, though. Maybe it suffices to say that they both have positive returns.
I like the artist income project, and basic income programs in general seem to have a good track record. At least as far as I’ve read.