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.

Kotlin VS Dart 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.)

binarytrees

Input: 18

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 794ms 80ms 581.9MB 1017ms 130ms kotlin/jvm 21.0.12
dart 1.dart 1485ms 9.0ms 70.6MB 1513ms 33ms dart/exe 3.13.4

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 188ms 30ms 159.7MB 233ms 30ms kotlin/jvm 21.0.12
dart 1.dart 615ms 12ms 40.9MB 607ms 13ms dart/exe 3.13.4

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 2-m.kt 3342ms 283ms 229.6MB 12590ms 123ms kotlin/jvm 21.0.12
kotlin 1.kt 3615ms 290ms 219.6MB 4723ms 107ms kotlin/jvm 21.0.12
dart 1.dart 9125ms 113ms 18.3MB 10160ms 83ms dart/exe 3.13.4

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 545ms 7.6ms 9.6MB 550ms 17ms dart/exe 3.13.4
kotlin 1-m.kt 738ms 7.2ms 77.4MB 1727ms 47ms kotlin/jvm 21.0.12
kotlin 2-m.kt 1625ms 206ms 97.5MB 5807ms 100ms kotlin/jvm 21.0.12

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 4.6ms 0.7ms 5.6MB 0ms 0ms dart/exe 3.13.4
kotlin 1-m.kt 87ms 4.3ms 46.2MB 136ms 12ms kotlin/jvm 21.0.12

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 2-m.dart 1656ms 60ms 93.2MB 1903ms 1347ms dart/exe 3.13.4
dart 1.dart 8370ms 40ms 85.5MB 1817ms 1257ms dart/exe 3.13.4
kotlin 2-m.kt 9841ms 283ms 341.7MB 32387ms 3343ms kotlin/jvm 21.0.12
kotlin 1-m.kt 11376ms 242ms 433.1MB 37790ms 4520ms kotlin/jvm 21.0.12

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 2.dart 398ms 29ms 49.0MB 280ms 263ms dart/exe 3.13.4
dart 1.dart 2683ms 529ms 47.1MB 213ms 233ms dart/exe 3.13.4
kotlin 2-m.kt 3791ms 276ms 249.0MB 11797ms 810ms kotlin/jvm 21.0.12
kotlin 1-m.kt 3917ms 180ms 275.4MB 12153ms 857ms kotlin/jvm 21.0.12

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 213ms 4.2ms 51.5MB 193ms 10ms dart/exe 3.13.4
kotlin 1-m.kt 1371ms 105ms 176.1MB 3830ms 140ms kotlin/jvm 21.0.12

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 2025ms 38ms 267.6MB 2557ms 103ms dart/exe 3.13.4
kotlin 1-m.kt 3079ms 117ms 749.4MB 7240ms 250ms kotlin/jvm 21.0.12

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 2.dart 203ms 0.9ms 8.7MB 190ms 0ms dart/exe 3.13.4
kotlin 1-m.kt 284ms 4.7ms 95.4MB 503ms 33ms kotlin/jvm 21.0.12
kotlin 2-m.kt 389ms 13ms 99.5MB 863ms 27ms kotlin/jvm 21.0.12
dart 1.dart 1045ms 0.8ms 8.6MB 1033ms 0ms dart/exe 3.13.4

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1-m.kt 482ms 4.8ms 201.4MB 717ms 47ms kotlin/jvm 21.0.12
kotlin 2-m.kt 543ms 5.7ms 209.8MB 993ms 67ms kotlin/jvm 21.0.12
dart 2.dart 587ms 2.0ms 9.4MB 577ms 0ms dart/exe 3.13.4
dart 1.dart 3117ms 5.0ms 8.7MB 3103ms 0ms dart/exe 3.13.4

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 2.dart 99ms 1.9ms 8.6MB 90ms 0ms dart/exe 3.13.4
dart 1.dart 170ms 2.9ms 8.6MB 160ms 0ms dart/exe 3.13.4
kotlin 1-m.kt 255ms 1.9ms 91.1MB 500ms 37ms kotlin/jvm 21.0.12
kotlin 2-m.kt 302ms 15ms 95.4MB 693ms 23ms kotlin/jvm 21.0.12

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 641ms 8.2ms 676.7MB 820ms 93ms kotlin/jvm 21.0.12
dart 1.dart 826ms 7.2ms 55.9MB 820ms 30ms dart/exe 3.13.4

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1-m.kt 250ms 11ms 205.0MB 363ms 67ms kotlin/jvm 21.0.12
dart 1.dart 463ms 4.0ms 43.5MB 447ms 13ms dart/exe 3.13.4

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 3.dart 763ms 1.7ms 5.5MB 750ms 0ms dart/exe 3.13.4
kotlin 1.kt 884ms 6.3ms 49.9MB 980ms 17ms kotlin/jvm 21.0.12

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 3.dart 84ms 3.0ms 5.8MB 70ms 3ms dart/exe 3.13.4
kotlin 1-m.kt 208ms 14ms 49.7MB 297ms 17ms kotlin/jvm 21.0.12

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 2.dart 1998ms 7.0ms 15.2MB 1987ms 47ms dart/exe 3.13.4
kotlin 1.kt 5427ms 177ms 419.0MB 6873ms 170ms kotlin/jvm 21.0.12

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 2.dart 439ms 5.3ms 15.0MB 423ms 10ms dart/exe 3.13.4
kotlin 1-m.kt 1629ms 66ms 362.2MB 3007ms 117ms kotlin/jvm 21.0.12

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 8673ms 241ms 178.9MB 9617ms 70ms kotlin/jvm 21.0.12
dart 1.dart 9757ms 76ms 187.5MB 9767ms 80ms dart/exe 3.13.4

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 987ms 14ms 43.3MB 957ms 17ms dart/exe 3.13.4
kotlin 1-m.kt 1293ms 57ms 133.7MB 2110ms 47ms kotlin/jvm 21.0.12

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 5266ms 83ms 228.7MB 6800ms 87ms kotlin/jvm 21.0.12

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1-m.kt 1750ms 44ms 260.1MB 2960ms 50ms kotlin/jvm 21.0.12