OpenCode v1.18.15

OpenCode v1.18.15 was released on .

Summary

Core Bugfixes - Chronological message ordering now stays correct even when imported or legacy message IDs are out of order. - Revert and fork actions now use real message chronology instead of mess...

Release Context

  • This was the 176th OpenCode release of 2026 tracked by Havoptic.
  • It shipped 1 day after OpenCode v1.18.14 (August 5, 2026).

Shipped around the same time

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Release Notes

Core Bugfixes - Chronological message ordering now stays correct even when imported or legacy message IDs are out of order. - Revert and fork actions now use real message chronology instead of message ID ordering. - Truncation cleanup now removes stale files by file timestamp more reliably. - Repeated compaction now keeps earlier tool-call history in summaries instead of dropping orphaned results. - Blob-based attachments now load correctly in the web UI. (@rexdotsh) Desktop Improvements - Added much broader locale coverage across the desktop app. - Export full session transcripts as JSON from the UI. Bugfixes - Session timelines now respect chronological message boundaries more reliably. - Stored messages now stay ordered by creation time. - Session lists now sort by persisted activity time more reliably. - Language names now stay native in the locale picker. - Filled in missing translations across existing locales. Thank you to 3 community contributors: - @rexdotsh: - fix(server): allow blob attachments in web UI (40692) - @ayubun: - fix(tui): support copying over ssh with set-clipboard on tmux config (30472) - @dangooddd: - feat(tui): add cursor style configuration (32295)

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