Comment by packetlost

I would look at benchmarks for Erlang and Elixir to get a rough idea of how Gleam performs at runtime. It's faster than Python generally, but not by a lot. It's for this reason that I really wish Gleam had a LLVM or Golang backend instead of JS / BEAM.

Here's some webserver benchmarks that cover a handful of popular languages: https://stressgrid.com/blog/webserver_benchmark/

I believe BEAM got a JIT compiler built into the runtime not too long ago (after that post, iirc), so it might perform a bit better now.