Here is a benchmark from 2020 comparing Eigen, Blaze, Fastor, Armadillo, and XTensor (run-time and compile time performance): https://romanpoya.medium.com/a-lo

Here is a benchmark from 2020 comparing Eigen, Blaze, Fastor, Armadillo, and XTensor (run-time and compile time performance): https://romanpoya.medium.com/a-look-at-the-performance-of-expression-templates-in-c-eigen-vs-blaze-vs-fastor-vs-armadillo-vs-2474ed38d982 https://romanpoya.medium.com/a-look-at-the-performance-of-ex...