diff --git a/Casks/o/opencode-desktop.rb b/Casks/o/opencode-desktop.rb
new file mode 100644
index 0000000000000..6ff883cba9bc3
--- /dev/null
+++ b/Casks/o/opencode-desktop.rb
@@ -0,0 +1,34 @@
+cask "opencode-desktop" do
+  arch arm: "aarch64", intel: "x64"
+
+  version "1.0.158"
+  sha256 arm:   "20b9ebabd73e51fd01b4f44b725acfad243b335e4f3447f470a784fba4fd4701",
+         intel: "69cfbdb2dc2ba771fbc65e7386e8b38c7e1f3164a782d4681f53a92235f5d434"
+
+  url "https://github.com/sst/opencode/releases/download/v#{version}/opencode-desktop-darwin-#{arch}.dmg",
+      verified: "github.com/sst/opencode/"
+  name "OpenCode"
+  desc "AI coding agent desktop client"
+  homepage "https://opencode.ai/"
+
+  livecheck do
+    url "https://github.com/sst/opencode/releases/latest/download/latest.json"
+    strategy :json do |json|
+      json["version"]
+    end
+  end
+
+  auto_updates true
+
+  app "OpenCode.app"
+
+  zap trash: [
+    "~/Library/Application Support/ai.opencode.desktop",
+    "~/Library/Caches/ai.opencode.desktop",
+    "~/Library/HTTPStorages/ai.opencode.desktop",
+    "~/Library/Logs/ai.opencode.desktop",
+    "~/Library/Preferences/ai.opencode.desktop.plist",
+    "~/Library/Saved Application State/ai.opencode.desktop.savedState",
+    "~/Library/WebKit/ai.opencode.desktop",
+  ]
+end