diff --git a/docs/core/subagents.md b/docs/core/subagents.md
index 24785145d9..ae0302e231 100644
--- a/docs/core/subagents.md
+++ b/docs/core/subagents.md
@@ -141,7 +141,7 @@ The available modes are:
 
 | Mode         | Description                                                                                                                                                                                 |
 | :----------- | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
-| `persistent` | **(Default)** Launches Chrome with a persistent profile stored at `~/.cache/chrome-devtools-mcp/`. Cookies, history, and settings are preserved between sessions.                           |
+| `persistent` | **(Default)** Launches Chrome with a persistent profile stored at `~/.gemini/cli-browser-profile/`. Cookies, history, and settings are preserved between sessions.                          |
 | `isolated`   | Launches Chrome with a temporary profile that is deleted after each session. Use this for clean-state automation.                                                                           |
 | `existing`   | Attaches to an already-running Chrome instance. You must enable remote debugging first by navigating to `chrome://inspect/#remote-debugging` in Chrome. No new browser process is launched. |
 
diff --git a/packages/core/src/agents/browser/browserManager.test.ts b/packages/core/src/agents/browser/browserManager.test.ts
index 2266983e4d..da01928662 100644
--- a/packages/core/src/agents/browser/browserManager.test.ts
+++ b/packages/core/src/agents/browser/browserManager.test.ts
@@ -157,6 +157,10 @@ describe('BrowserManager', () => {
         ?.args as string[];
       expect(args).not.toContain('--isolated');
       expect(args).not.toContain('--autoConnect');
+      // Persistent mode should set the default --userDataDir under ~/.gemini
+      expect(args).toContain('--userDataDir');
+      const userDataDirIndex = args.indexOf('--userDataDir');
+      expect(args[userDataDirIndex + 1]).toMatch(/cli-browser-profile$/);
     });
 
     it('should pass headless flag when configured', async () => {
diff --git a/packages/core/src/agents/browser/browserManager.ts b/packages/core/src/agents/browser/browserManager.ts
index 82062de520..2f17a0db2c 100644
--- a/packages/core/src/agents/browser/browserManager.ts
+++ b/packages/core/src/agents/browser/browserManager.ts
@@ -22,10 +22,15 @@ import { StdioClientTransport } from '@modelcontextprotocol/sdk/client/stdio.js'
 import type { Tool as McpTool } from '@modelcontextprotocol/sdk/types.js';
 import { debugLogger } from '../../utils/debugLogger.js';
 import type { Config } from '../../config/config.js';
+import { Storage } from '../../config/storage.js';
+import * as path from 'node:path';
 
 // Pin chrome-devtools-mcp version for reproducibility.
 const CHROME_DEVTOOLS_MCP_VERSION = '0.17.1';
 
+// Default browser profile directory name within ~/.gemini/
+const BROWSER_PROFILE_DIR = 'cli-browser-profile';
+
 // Default timeout for MCP operations
 const MCP_TIMEOUT_MS = 60_000;
 
@@ -246,7 +251,7 @@ export class BrowserManager {
 
     // Session mode determines how the browser is managed:
     // - "isolated": Temp profile, cleaned up after session (--isolated)
-    // - "persistent": Persistent profile at ~/.cache/chrome-devtools-mcp/ (default)
+    // - "persistent": Persistent profile at ~/.gemini/cli-browser-profile/ (default)
     // - "existing": Connect to already-running Chrome (--autoConnect, requires
     //   remote debugging enabled at chrome://inspect/#remote-debugging)
     if (sessionMode === 'isolated') {
@@ -261,6 +266,13 @@ export class BrowserManager {
     }
     if (browserConfig.customConfig.profilePath) {
       mcpArgs.push('--userDataDir', browserConfig.customConfig.profilePath);
+    } else if (sessionMode === 'persistent') {
+      // Default persistent profile lives under ~/.gemini/cli-browser-profile
+      const defaultProfilePath = path.join(
+        Storage.getGlobalGeminiDir(),
+        BROWSER_PROFILE_DIR,
+      );
+      mcpArgs.push('--userDataDir', defaultProfilePath);
     }
 
     debugLogger.log(