diff --git a/packages/manager/.changeset/pr-13234-changed-1767172149210.md b/packages/manager/.changeset/pr-13234-changed-1767172149210.md
new file mode 100644
index 00000000000..770e04ff88d
--- /dev/null
+++ b/packages/manager/.changeset/pr-13234-changed-1767172149210.md
@@ -0,0 +1,5 @@
+---
+"@linode/manager": Changed
+---
+
+Update Generational Plans default sort to show newest (G8) -> oldest (G6) ([#13234](https://github.com/linode/manager/pull/13234))
diff --git a/packages/manager/src/features/components/PlansPanel/utils/planFilters.test.ts b/packages/manager/src/features/components/PlansPanel/utils/planFilters.test.ts
index 1c4e99cf5c5..7dddf55b744 100644
--- a/packages/manager/src/features/components/PlansPanel/utils/planFilters.test.ts
+++ b/packages/manager/src/features/components/PlansPanel/utils/planFilters.test.ts
@@ -11,6 +11,7 @@ import {
   filterPlansByGpuType,
   filterPlansByType,
   getAvailableTypes,
+  getGenerationRank,
   supportsTypeFiltering,
 } from './planFilters';
 
@@ -240,4 +241,19 @@ describe('planFilters utilities', () => {
       expect(result).toEqual(gpuPlans);
     });
   });
+
+  describe('getGenerationRank', () => {
+    it('returns higher rank for newer generations', () => {
+      expect(getGenerationRank('g8-dedicated-4-2')).toBeGreaterThan(
+        getGenerationRank('g7-dedicated-4-2')
+      );
+      expect(getGenerationRank('g7-dedicated-4-2')).toBeGreaterThan(
+        getGenerationRank('g6-dedicated-2')
+      );
+    });
+
+    it('returns 0 for unknown generations', () => {
+      expect(getGenerationRank('legacy-plan')).toBe(0);
+    });
+  });
 });
diff --git a/packages/manager/src/features/components/PlansPanel/utils/planFilters.ts b/packages/manager/src/features/components/PlansPanel/utils/planFilters.ts
index 9dd66d55a8d..9cec18a885e 100644
--- a/packages/manager/src/features/components/PlansPanel/utils/planFilters.ts
+++ b/packages/manager/src/features/components/PlansPanel/utils/planFilters.ts
@@ -68,6 +68,19 @@ export const filterPlansByGeneration = (
 // Type Filtering
 // ============================================================================
 
+/**
+ * Determines the relative generation order of a plan based on its ID.
+ *
+ * Used to sort plans from newest to oldest when the "All" type
+ * filter is selected (G8 -> G7 -> G6).
+ */
+export const getGenerationRank = (planId: string): number => {
+  if (planId.startsWith('g8-')) return 3;
+  if (planId.startsWith('g7-')) return 2;
+  if (planId.startsWith('g6-')) return 1;
+  return 0;
+};
+
 /**
  * Filter plans by type within a generation
  *
@@ -88,9 +101,11 @@ export const filterPlansByType = (
   generation: PlanFilterGeneration,
   type: PlanFilterType
 ): PlanWithAvailability[] => {
-  // "All" returns all plans unchanged
+  // "All" returns all plans, sorted from newest (G8) to oldest (G6)
   if (type === PLAN_FILTER_ALL) {
-    return plans;
+    return [...plans].sort(
+      (a, b) => getGenerationRank(b.id) - getGenerationRank(a.id)
+    );
   }
 
   // G7, G6, and "All" generation only have "All" option (no sub-types)