diff --git a/.changeset/orange-carrots-care.md b/.changeset/orange-carrots-care.md
new file mode 100644
index 0000000000..9f11faeaf0
--- /dev/null
+++ b/.changeset/orange-carrots-care.md
@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-cost-insights': patch
+---
+
+Migrated to new composability API, exporting the plugin instance as `costInsightsPlugin`, the root `'/cost-insights'` page as `CostInsightsPage`, the `'/cost-insights/investigating-growth'` page as `CostInsightsProjectGrowthInstructionsPage`, and the `'/cost-insights/labeling-jobs'` page as `CostInsightsLabelDataflowInstructionsPage`.
diff --git a/plugins/cost-insights/dev/index.tsx b/plugins/cost-insights/dev/index.tsx
index bdbb4450fa..e4732fc364 100644
--- a/plugins/cost-insights/dev/index.tsx
+++ b/plugins/cost-insights/dev/index.tsx
@@ -16,10 +16,10 @@
 import { createDevApp } from '@backstage/dev-utils';
 import { costInsightsApiRef } from '../src/api';
 import { ExampleCostInsightsClient } from '../src/client';
-import { plugin } from '../src/plugin';
+import { costInsightsPlugin } from '../src/plugin';
 
 createDevApp()
-  .registerPlugin(plugin)
+  .registerPlugin(costInsightsPlugin)
   .registerApi({
     api: costInsightsApiRef,
     deps: {},
diff --git a/plugins/cost-insights/src/index.ts b/plugins/cost-insights/src/index.ts
index 13ce929401..0ae9d05b09 100644
--- a/plugins/cost-insights/src/index.ts
+++ b/plugins/cost-insights/src/index.ts
@@ -14,7 +14,13 @@
  * limitations under the License.
  */
 
-export { plugin } from './plugin';
+export {
+  costInsightsPlugin,
+  costInsightsPlugin as plugin,
+  CostInsightsPage,
+  CostInsightsProjectGrowthInstructionsPage,
+  CostInsightsLabelDataflowInstructionsPage,
+} from './plugin';
 export * from './client';
 export * from './api';
 export { ProjectGrowthAlert, UnlabeledDataflowAlert } from './alerts';
diff --git a/plugins/cost-insights/src/plugin.test.ts b/plugins/cost-insights/src/plugin.test.ts
index 6210e11d4c..87be3ff8a2 100644
--- a/plugins/cost-insights/src/plugin.test.ts
+++ b/plugins/cost-insights/src/plugin.test.ts
@@ -14,10 +14,10 @@
  * limitations under the License.
  */
 
-import { plugin } from './plugin';
+import { costInsightsPlugin } from './plugin';
 
 describe('cost-insights', () => {
   it('should export plugin', () => {
-    expect(plugin).toBeDefined();
+    expect(costInsightsPlugin).toBeDefined();
   });
 });
diff --git a/plugins/cost-insights/src/plugin.ts b/plugins/cost-insights/src/plugin.ts
index 7006d5bf5d..29e345532d 100644
--- a/plugins/cost-insights/src/plugin.ts
+++ b/plugins/cost-insights/src/plugin.ts
@@ -14,10 +14,14 @@
  * limitations under the License.
  */
 
-import { createPlugin, createRouteRef } from '@backstage/core';
-import { CostInsightsPage } from './components/CostInsightsPage';
-import { ProjectGrowthInstructionsPage } from './components/ProjectGrowthInstructionsPage';
-import { LabelDataflowInstructionsPage } from './components/LabelDataflowInstructionsPage';
+import {
+  createPlugin,
+  createRouteRef,
+  createRoutableExtension,
+} from '@backstage/core';
+import { CostInsightsPage as CostInsightsPageComponent } from './components/CostInsightsPage';
+import { ProjectGrowthInstructionsPage as ProjectGrowthInstructionsPageComponent } from './components/ProjectGrowthInstructionsPage';
+import { LabelDataflowInstructionsPage as LabelDataflowInstructionsPageComponent } from './components/LabelDataflowInstructionsPage';
 
 export const rootRouteRef = createRouteRef({
   path: '/cost-insights',
@@ -34,12 +38,51 @@ export const unlabeledDataflowAlertRef = createRouteRef({
   title: 'Labeling Dataflow Jobs',
 });
 
-export const plugin = createPlugin({
+export const costInsightsPlugin = createPlugin({
   id: 'cost-insights',
   register({ router, featureFlags }) {
-    router.addRoute(rootRouteRef, CostInsightsPage);
-    router.addRoute(projectGrowthAlertRef, ProjectGrowthInstructionsPage);
-    router.addRoute(unlabeledDataflowAlertRef, LabelDataflowInstructionsPage);
+    router.addRoute(rootRouteRef, CostInsightsPageComponent);
+    router.addRoute(
+      projectGrowthAlertRef,
+      ProjectGrowthInstructionsPageComponent,
+    );
+    router.addRoute(
+      unlabeledDataflowAlertRef,
+      LabelDataflowInstructionsPageComponent,
+    );
     featureFlags.register('cost-insights-currencies');
   },
+  routes: {
+    root: rootRouteRef,
+    growthAlerts: projectGrowthAlertRef,
+    unlabeledDataflowAlerts: unlabeledDataflowAlertRef,
+  },
 });
+
+export const CostInsightsPage = costInsightsPlugin.provide(
+  createRoutableExtension({
+    component: () =>
+      import('./components/CostInsightsPage').then(m => m.CostInsightsPage),
+    mountPoint: rootRouteRef,
+  }),
+);
+
+export const CostInsightsProjectGrowthInstructionsPage = costInsightsPlugin.provide(
+  createRoutableExtension({
+    component: () =>
+      import('./components/ProjectGrowthInstructionsPage').then(
+        m => m.ProjectGrowthInstructionsPage,
+      ),
+    mountPoint: projectGrowthAlertRef,
+  }),
+);
+
+export const CostInsightsLabelDataflowInstructionsPage = costInsightsPlugin.provide(
+  createRoutableExtension({
+    component: () =>
+      import('./components/LabelDataflowInstructionsPage').then(
+        m => m.LabelDataflowInstructionsPage,
+      ),
+    mountPoint: unlabeledDataflowAlertRef,
+  }),
+);