Latest stable Gleam: 1.19.2, released (release notes). 40 stable releases since 16 Jan 2024.
Gleam
A type-safe language for the Erlang VM and JavaScript runtimes.
- 40stable releases since Jan 2024
- 22days between stable releases, median
- 3in Oct 2026, the busiest month
- 81days, the longest wait (25 Dec 2025 to 16 Mar 2026)
- Gleam
- Erlang source
- tokenise
- parse
- abstract forms
- BEAM
- Gleam
- Erlang source
- tokenise
- parse
- abstract forms
- BEAM
Struck stages are the front half of the Erlang compiler, which 1.19 no longer needs.
Gleam 1.19.0 shipped on 5 October 2026 with a rewritten Erlang code generator. The compiler no longer writes Erlang source for the Erlang compiler to tokenise and parse again. It emits Erlang abstract forms, the tree that parser would have produced, and loads them directly, so line numbers in BEAM crash reports and stack traces now point at the Gleam source.
In the benchmark from the release post, 100 modules of 100 functions each, a full build took about 340 ms with 1.19 against about 430 ms with 1.17. That puts Gleam on Erlang ahead of Erlang itself at about 410 ms, because Gleam now skips the front half of the Erlang compiler. 1.19.2 followed a week later and fixed generated code for user-defined types that made Dialyzer crash.
As of 24 October 2026. Gleam 1.19 release post.
Latest releases
1.19.2Valid Erlang for user-defined types again, so Dialyzer stops crashing.1.19.1export javascript-prelude and typescript-prelude run again.1.19.0New Erlang code generator that emits abstract forms.1.18.1Correct Erlang code for constant aliases in bit arrays, concatenation and guards.1.18.0First stage of the Erlang code generator rewrite.
From @gleamlang on X
Gleam v1.19.0 is out now!
https://gleam.run/news/gleam-doesnt-compile-to-erlang-source-anymore/
The 1.19.0 announcement, after three release candidates in two weeks.
Gleam v1.19.2 is out now!
https://github.com/gleam-lang/gleam/releases/tag/v1.19.2
1.19.2, the patch that fixed generated code for user-defined types.
