> How does it compare to XXH3?

XX is a slightly better hashing function, meow is slightly faster.

Take your pick. Life is about tradeoffs.

Well, the page for MeowHash is written in 2018.

xxHash Performance Comparison page is last updated in 2021, and in that page XXH3 is faster than MeowHash:

https://github.com/Cyan4973/xxHash/wiki/Performance-comparis...

i7-9700K can reach up to 4.9 Ghz and Meow Hash can hash at a rate of 16 bytes per cycle. That means 78 GB/s.

xxHash rate is 31.5 GB/s on that CPU.

Scroll down, XXH3 is 59 GB/s using AVX2 while meow is 58 GB/s in their benchmark.