OpenCode v1.3.4

OpenCode v1.3.4 was released on .

Summary

Core - Add prompt slot feature - Update opencode-gitlab-auth to 2.0.1 (@vglafirov) - Refactored session processor to use effect-based architecture - Use AppFileSystem instead of raw Filesystem for...

Release Context

  • This was the 65th OpenCode release of 2026 tracked by Havoptic.
  • It shipped 2 days after OpenCode v1.3.3 (March 26, 2026).

Shipped around the same time

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Release Notes

Core - Add prompt slot feature - Update opencode-gitlab-auth to 2.0.1 (@vglafirov) - Refactored session processor to use effect-based architecture - Use AppFileSystem instead of raw Filesystem for better abstraction - Upgrade OpenTUI to version 0.1.91 - Adjust bash tool description to increase cache hit rates between projects - Update Effect to version 4.0.0-beta.42 - Refactor session compaction service to use Effect - Add single target plugin entrypoints - Use ChildProcessSpawner instead of Process.spawn for formatting - Move more responsibility to workspace routing - Refactor Session service to use Effect-based architecture - Add support for AI SDK v6 - Add additional overflow error patterns to error handling - Fix flaky plugin tests by removing mock.module which is not supported in Bun - Split out instance and route through workspaces - Effectify Plugin service internals - Effectify Skill service internals - Add TUI plugins support - Refactor tool registry to yield Config and Plugin services using Effect.forEach - Ignore generated models snapshot files - Replace async git() with ChildProcessSpawner in VCS module - Yield services instead of promise facades in Effect refactor - Fixed web UI bundle build on Windows - Improve app startup performance - Close MCP transport on failed or timed-out connections - Use cachedInvalidateWithTTL for config and bump Effect to beta.37 - Refactor Config service to use Effect - Remove workspace server and WorkspaceContext, improve routing architecture - Add GPT prompt so non-Codex GPT models have their own system prompt modeled after Codex CLI - Refactor LSP service with InstanceState using Effect TUI - Use theme color for prompt placeholder - Add dialog variant menu and improve subagent functionality - Open dialog for model variant selection instead of cycling - Check KV theme before falling back to default theme - Add top spacing to session view and remove obsolete documentation prompt - Restore subagent footer and fix style guide violations - Add model variant selection dialog - Remove variant cycle display from footer - Move session context into prompt footer Desktop - Improved app startup efficiency - Use Azure Artifact Signing for Windows releases - Default file tree to closed with minimum width - Resize layout viewport when mobile keyboard appears (@BYK) - Persist queued followups across project switches - Reduce markdown jank while responses stream in UI - Remove fork session button from app - Default shell tool to collapsed state - Don't bundle fonts in app Thank you to 3 community contributors: - @BYK: - fix(app): resize layout viewport when mobile keyboard appears (15841) - @vglafirov: - fix: update opencode-gitlab-auth to 2.0.1 (19552) - @gigamonster256: - fix: respect semver build identifiers for nix (11915) - fix: nix embedded web-ui support (19561)

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