Python 3 versus Node js fastest programs Always look at the source code. These are only the fastest programs. Do some of them use manually vectorized SIMD? Look at the other programs. They may seem more-like a fair comparison to you. regex-redux source secs mem gz busy cpu load Python 3 1.36 111,852 1403 2.64 32% 40% 33% 88% Node js 4.82 1,150,424 668 5.90 10% 82% 1% 29% pidigits source secs mem gz busy cpu load Python 3 1.28 12,024 567 1.29 0% 1% 100% 0% Node js 1.31 36,792 599 1.33 1% 0% 99% 2% k-nucleotide source secs mem gz busy cpu load Python 3 46.28 241,108 1967 176.42 94% 97% 95% 96% Node js 15.82 396,716 1812 44.48 63% 47% 81% 90% reverse-complement source secs mem gz busy cpu load Python 3 7.20 1,005,184 814 10.75 20% 53% 48% 29% Node js 2.21 1,534,824 1480 4.62 53% 22% 65% 68% binary-trees source secs mem gz busy cpu load Python 3 48.03 462,732 472 174.44 89% 97% 88% 89% Node js 7.20 1,282,116 744 20.39 83% 70% 68% 63% fasta source secs mem gz busy cpu load Python 3 37.32 846,264 1947 71.03 10% 67% 83% 30% Node js 1.91 72,004 2047 6.18 81% 88% 78% 78% fannkuch-redux source secs mem gz busy cpu load Python 3 352.29 12,232 950 1,392.10 97% 99% 100% 99% Node js 11.38 65,452 1313 45.00 99% 99% 99% 99% mandelbrot source secs mem gz busy cpu load Python 3 163.32 12,080 688 642.00 98% 98% 98% 98% Node js 4.04 95,888 1122 15.91 100% 98% 98% 99% n-body source secs mem gz busy cpu load Python 3 567.56 8,076 1196 570.95 0% 0% 0% 100% Node js 8.60 36,000 1268 8.85 100% 2% 0% 1% spectral-norm source secs mem gz busy cpu load Python 3 120.99 13,424 407 479.86 99% 99% 99% 99% Node js 1.64 67,912 999 6.11 92% 93% 96% 92% Python 3 Python 3.9.2 Node js v16.8.0 all Python 3 programs & measurements all Node js programs & measurements