[azinman2]

There's no way it's close to Python. Where are the benchmarks?

https://github.com/sh3244/swift-vs-python

Shows a huge difference, as expected for a typed memory-safe compiled language using LLVM versus an interpreted language with a global interpreter lock.

[rudedogg]

https://forums.swift.org/t/really-bad-performance-with-concu...

[KerrAvon]

The thread you just posted has a bunch of posts indicating this was not the actually the same program in Python and Swift; further, the Swift version was written poorly. Plus, the graph in the final post shows whatever Swift version someone ran tests on as much faster than Python.