Python 3 versus Node js fastest programs Always look at the source code. These are only the fastest programs. 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 2.67 111,864 1403 4.86 87% 30% 29% 35% Node js 9.53 756,856 668 12.74 71% 24% 13% 26% pidigits source secs mem gz busy cpu load Python 3 2.39 12,200 567 2.55 64% 37% 5% 1% Node js 2.58 36,368 599 2.97 100% 6% 7% 2% k-nucleotide source secs mem gz busy cpu load Python 3 72.58 183,484 1967 276.33 95% 95% 94% 97% Node js 26.32 397,472 1812 77.28 74% 71% 62% 87% reverse-complement source secs mem gz busy cpu load Python 3 16.41 1,772,696 434 17.57 1% 78% 28% 0% Node js 4.10 1,340,368 1480 8.58 52% 56% 73% 28% binary-trees source secs mem gz busy cpu load Python 3 80.82 448,104 589 288.23 91% 88% 91% 86% Node js 19.22 1,000,628 711 61.94 80% 82% 82% 79% fasta source secs mem gz busy cpu load Python 3 63.63 841,056 1947 127.80 58% 61% 44% 37% Node js 3.62 67,488 2047 10.61 72% 75% 72% 74% fannkuch-redux source secs mem gz busy cpu load Python 3 494.58 47,432 950 1,956.79 98% 99% 98% 100% Node js 19.48 58,152 1313 77.05 99% 99% 99% 99% n-body source secs mem gz busy cpu load Python 3 891.12 8,416 1196 924.03 1% 53% 47% 2% Node js 26.28 35,412 1268 28.03 2% 0% 4% 100% mandelbrot source secs mem gz busy cpu load Python 3 263.87 48,268 688 1,054.07 100% 100% 100% 100% Node js 6.84 88,016 1122 26.99 98% 98% 99% 98% spectral-norm source secs mem gz busy cpu load Python 3 170.10 49,484 417 670.83 99% 98% 98% 99% Node js 4.40 61,768 999 16.63 93% 97% 95% 93% Python 3 Python 3.8.0 Node js v14.2.0 all Python 3 programs & measurements all Node js programs & measurements