Programming Language and compiler
Benchmarks

Results for 38 of 40 languages from this run on actest1.

Unavailable in this run: Hack, Lisp. Follow the run link for failure details.

Elixir VS Crystal benchmarks

Current benchmark data was generated on Sun Sep 27 2026, full log can be found HERE

CONTRIBUTIONS are WELCOME!

[x86_64][4 cores] Intel(R) Core(TM) i7-3687U CPU @ 2.10GHz (Model 58)

* -m in a file name stands for multi-threading or multi-processing

* -i in a file name stands for direct intrinsics usage. (Usage of simd intrinsics via libraries is not counted)

* -ffi in a file name stands for non-stdlib FFI usage

* (You may find time < time(user) + time(sys) for some non-parallelized programs, the overhead is from GC or JIT compiler, which are allowed to take advantage of multi-cores as that's more close to real-world scenarios.)

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 2387ms 104ms 20.1MB 2310ms 60ms crystal 1.11.2
elixir 1.ex 5705ms 28ms 95.3MB 6130ms 317ms elixir 15.2.7

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 94ms 1.2ms 7.3MB 73ms 10ms crystal 1.11.2
elixir 1.ex 687ms 26ms 91.2MB 853ms 163ms elixir 15.2.7

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 100ms 23ms 7.2MB 83ms 3ms crystal 1.11.2
elixir 1.ex timeout (120s) — — — — elixir 15.2.7

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 33ms 2.6ms 4.9MB 20ms 0ms crystal 1.11.2
elixir 1.ex 18934ms 249ms 89.8MB 19680ms 660ms elixir 15.2.7

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 2.8ms 0.5ms 2.5MB 0ms 0ms crystal 1.11.2
elixir 1.ex 313ms 17ms 86.7MB 366ms 88ms elixir 15.2.7

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
elixir 1.ex 2709ms 78ms 89.2MB 3030ms 930ms elixir 15.2.7
crystal 1.cr 3508ms 129ms 5.6MB 3480ms 10ms crystal 1.11.2

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 831ms 12ms 4.3MB 807ms 3ms crystal 1.11.2
elixir 1-m.ex 962ms 17ms 87.7MB 1167ms 357ms elixir 15.2.7

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 11056ms 4.8ms 3.9MB 11043ms 0ms crystal 1.11.2
elixir 1.ex 157109ms 510ms 95.5MB 157083ms 160ms elixir 15.2.7

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 2769ms 0.6ms 3.9MB 2757ms 0ms crystal 1.11.2
elixir 1.ex 38614ms 362ms 99.3MB 38603ms 207ms elixir 15.2.7

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 699ms 4.1ms 3.5MB 687ms 0ms crystal 1.11.2
elixir 1.ex 9814ms 27ms 90.8MB 9833ms 120ms elixir 15.2.7