diff --git a/app/layout.tsx b/app/layout.tsx
index 66db5da..8e706f7 100644
--- a/app/layout.tsx
+++ b/app/layout.tsx
@@ -1,3 +1,4 @@
+import { SpeedInsights } from "@vercel/speed-insights/next";
 import type { Metadata } from "next";
 import { Geist, Geist_Mono } from "next/font/google";
 import { Toaster } from "sonner";
@@ -81,6 +82,7 @@ export default function RootLayout({
           <Toaster position="top-center" />
           <SessionProvider>{children}</SessionProvider>
         </ThemeProvider>
+        <SpeedInsights />
       </body>
     </html>
   );
diff --git a/components/multimodal-input.tsx b/components/multimodal-input.tsx
index ed62df1..dcd46d8 100644
--- a/components/multimodal-input.tsx
+++ b/components/multimodal-input.tsx
@@ -323,10 +323,10 @@ function PureMultimodalInput({
           if (!input.trim() && attachments.length === 0) {
             return;
           }
-          if (status !== "ready") {
-            toast.error("Please wait for the model to finish its response!");
-          } else {
+          if (status === "ready") {
             submitForm();
+          } else {
+            toast.error("Please wait for the model to finish its response!");
           }
         }}
       >
diff --git a/components/toolbar.tsx b/components/toolbar.tsx
index b6b4fd0..cfc627d 100644
--- a/components/toolbar.tsx
+++ b/components/toolbar.tsx
@@ -76,11 +76,11 @@ const Tool = ({
       return;
     }
 
-    if (selectedTool !== description) {
-      setSelectedTool(description);
-    } else {
+    if (selectedTool === description) {
       setSelectedTool(null);
       onClick({ sendMessage });
+    } else {
+      setSelectedTool(description);
     }
   };
 
diff --git a/lib/editor/diff.js b/lib/editor/diff.js
index 696681e..6163e76 100644
--- a/lib/editor/diff.js
+++ b/lib/editor/diff.js
@@ -253,7 +253,7 @@ export const patchTextNodes = (schema, oldNode, newNode) => {
       const node = createTextNode(
         schema,
         sentence,
-        type !== DiffType.Unchanged ? [createDiffMark(schema, type)] : []
+        type === DiffType.Unchanged ? [] : [createDiffMark(schema, type)]
       );
       return node;
     });
diff --git a/package.json b/package.json
index ce77859..7abcbff 100644
--- a/package.json
+++ b/package.json
@@ -46,6 +46,7 @@
     "@vercel/blob": "^0.24.1",
     "@vercel/functions": "^2.0.0",
     "@vercel/otel": "^1.12.0",
+    "@vercel/speed-insights": "^2.0.0",
     "@xyflow/react": "^12.10.0",
     "ai": "6.0.37",
     "bcrypt-ts": "^5.0.2",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index cede9a0..fe40d53 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -92,6 +92,9 @@ importers:
       '@vercel/otel':
         specifier: ^1.12.0
         version: 1.14.0(@opentelemetry/api-logs@0.200.0)(@opentelemetry/api@1.9.0)(@opentelemetry/instrumentation@0.57.2(@opentelemetry/api@1.9.0))(@opentelemetry/resources@1.30.1(@opentelemetry/api@1.9.0))(@opentelemetry/sdk-logs@0.57.2(@opentelemetry/api@1.9.0))(@opentelemetry/sdk-metrics@1.30.1(@opentelemetry/api@1.9.0))(@opentelemetry/sdk-trace-base@1.30.1(@opentelemetry/api@1.9.0))
+      '@vercel/speed-insights':
+        specifier: ^2.0.0
+        version: 2.0.0(next@16.0.10(@opentelemetry/api@1.9.0)(@playwright/test@1.51.0)(react-dom@19.0.1(react@19.0.1))(react@19.0.1))(react@19.0.1)
       '@xyflow/react':
         specifier: ^12.10.0
         version: 12.10.0(@types/react@18.3.18)(react-dom@19.0.1(react@19.0.1))(react@19.0.1)
@@ -2469,6 +2472,32 @@ packages:
     engines: {node: '>=18.14'}
     deprecated: '@vercel/postgres is deprecated. If you are setting up a new database, you can choose an alternate storage solution from the Vercel Marketplace. If you had an existing Vercel Postgres database, it should have been migrated to Neon as a native Vercel integration. You can find more details and the guide to migrate to Neon''s SDKs here: https://neon.com/docs/guides/vercel-postgres-transition-guide'
 
+  '@vercel/speed-insights@2.0.0':
+    resolution: {integrity: sha512-jwkNcrTeafWxjmWq4AHBaptSqZiJkYU5adLC9QBSqeim0GcqDMgN5Ievh8OG1rJ6W3A4l1oiP7qr9CWxGuzu3w==}
+    peerDependencies:
+      '@sveltejs/kit': ^1 || ^2
+      next: '>= 13'
+      nuxt: '>= 3'
+      react: ^18 || ^19 || ^19.0.0-rc
+      svelte: '>= 4'
+      vue: ^3
+      vue-router: ^4
+    peerDependenciesMeta:
+      '@sveltejs/kit':
+        optional: true
+      next:
+        optional: true
+      nuxt:
+        optional: true
+      react:
+        optional: true
+      svelte:
+        optional: true
+      vue:
+        optional: true
+      vue-router:
+        optional: true
+
   '@xyflow/react@12.10.0':
     resolution: {integrity: sha512-eOtz3whDMWrB4KWVatIBrKuxECHqip6PfA8fTpaS2RUGVpiEAe+nqDKsLqkViVWxDGreq0lWX71Xth/SPAzXiw==}
     peerDependencies:
@@ -5954,6 +5983,11 @@ snapshots:
       - utf-8-validate
     optional: true
 
+  '@vercel/speed-insights@2.0.0(next@16.0.10(@opentelemetry/api@1.9.0)(@playwright/test@1.51.0)(react-dom@19.0.1(react@19.0.1))(react@19.0.1))(react@19.0.1)':
+    optionalDependencies:
+      next: 16.0.10(@opentelemetry/api@1.9.0)(@playwright/test@1.51.0)(react-dom@19.0.1(react@19.0.1))(react@19.0.1)
+      react: 19.0.1
+
   '@xyflow/react@12.10.0(@types/react@18.3.18)(react-dom@19.0.1(react@19.0.1))(react@19.0.1)':
     dependencies:
       '@xyflow/system': 0.0.74