Startup time is another. For example:

    $ elixir test.exs
    hello, world!

    $ hyperfine "elixir test.exs"
    Benchmark 1: elixir test.exs
      Time (mean ± σ):     471.1 ms ±   2.6 ms    [User: 187.4 ms, System: 83.1 ms]
      Range (min … max):   467.1 ms … 475.6 ms    10 runs

Compared to:

    $ ruby test.rb
    hello, world!

    $ hyperfine "ruby test.rb"
    Benchmark 1: ruby test.rb
      Time (mean ± σ):      36.3 ms ±   2.6 ms    [User: 26.0 ms, System: 8.4 ms]
      Range (min … max):    34.5 ms …  53.6 ms    53 runs

In practice, I've been able to get the ruby startup time to as low as 6ms - this is what I use for scripts running as keyboard macros, for example. I cannot practically use elixir for that.