diff --git a/vscode-extension/src/ui/statusBar.ts b/vscode-extension/src/ui/statusBar.ts
new file mode 100644
index 0000000..a7c72cf
--- /dev/null
+++ b/vscode-extension/src/ui/statusBar.ts
@@ -0,0 +1,46 @@
+import * as vscode from 'vscode';
+import { AnalysisResult } from '../analysis/analyzer';
+
+export class StatusBarUI {
+    private statusBarItem: vscode.StatusBarItem;
+    
+    constructor() {
+        this.statusBarItem = vscode.window.createStatusBarItem(
+            vscode.StatusBarAlignment.Right,
+            100
+        );
+        this.statusBarItem.show();
+    }
+    
+    public update(analysis: AnalysisResult | null) {
+        if (!analysis) {
+            this.statusBarItem.text = '$(check) AILint: Ready';
+            this.statusBarItem.tooltip = 'No AI influence detected';
+            this.statusBarItem.backgroundColor = undefined;
+            return;
+        }
+        
+        const percentage = (analysis.confidence * 100).toFixed(0);
+        
+        if (analysis.confidence < 0.3) {
+            // Low likelihood
+            this.statusBarItem.text = `$(check) AI: ${percentage}%`;
+            this.statusBarItem.backgroundColor = undefined;
+        } else if (analysis.confidence < 0.7) {
+            // Medium likelihood
+            this.statusBarItem.text = `$(warning) AI: ${percentage}%`;
+            this.statusBarItem.backgroundColor = new vscode.ThemeColor(
+                'statusBarItem.warningBackground'
+            );
+        } else {
+            // High likelihood
+            this.statusBarItem.text = `$(alert) AI: ${percentage}%`;
+            this.statusBarItem.backgroundColor = new vscode.ThemeColor(
+                'statusBarItem.errorBackground'
+            );
+        }
+        
+        this.statusBarItem.tooltip = analysis.explanation;
+        this.statusBarItem.command = 'ailint.showDetails';
+    }
+}