OpenCode 1.18.9

Released Jul 28, 2026 · official source

Safe to upgrade? Looks safe

1 bug/regression-labelled issues opened in the 44h after release (0 regression-flagged, 0 mention v1.18.9 in title). Normalised score 1.6.

Issues counted

#39529 fix(core): retry session title after failed first step (bug, core, 2.0)

How this is computed

Breaking-change highlights

Removed the extra vertical borders from the V2 home projects view.

Auto-extracted lines mentioning breaking/deprecated/removed/migrate. Always read the full notes.

Changelog: v1.18.9

Core

Bugfixes

Restored compatibility with legacy MCP SDK clients.

Desktop

Bugfixes

Fixed a Solid cleanup crash that could break navigation in the desktop app.
Fixed home session loading so the session list can update without suspending the whole page.

Improvements

Removed the extra vertical borders from the V2 home projects view.
Added an opt-in V2 desktop sidecar backed by the bundled CLI service.
Added collapsible model provider sections in V2 settings.

Thank you to 1 community contributor:

@roborew:
fix(desktop): patch @dnd-kit/solid to preserve core scroll plugins (#38119)