diff --git a/code/frontend/src/app/features/seeker-stats/searches-tab/searches-tab.component.html b/code/frontend/src/app/features/seeker-stats/searches-tab/searches-tab.component.html
index 16e3b8c5..33a6d91a 100644
--- a/code/frontend/src/app/features/seeker-stats/searches-tab/searches-tab.component.html
+++ b/code/frontend/src/app/features/seeker-stats/searches-tab/searches-tab.component.html
@@ -77,9 +77,9 @@
             </div>
             <div class="instance-card__stat">
               <span class="instance-card__stat-value">
-                {{ inst.cycleStartedAt ? formatCycleDuration(inst.cycleStartedAt) : '—' }}
+                {{ cycleDuration(inst) }}
               </span>
-              <app-tooltip text="How long the current search cycle has been running">
+              <app-tooltip text="How long the current search cycle has been running, or took if complete">
                 <span class="instance-card__stat-label">Cycle Duration</span>
               </app-tooltip>
             </div>
diff --git a/code/frontend/src/app/features/seeker-stats/searches-tab/searches-tab.component.spec.ts b/code/frontend/src/app/features/seeker-stats/searches-tab/searches-tab.component.spec.ts
index 474dd52a..2944148c 100644
--- a/code/frontend/src/app/features/seeker-stats/searches-tab/searches-tab.component.spec.ts
+++ b/code/frontend/src/app/features/seeker-stats/searches-tab/searches-tab.component.spec.ts
@@ -403,15 +403,19 @@ describe('SearchesTabComponent', () => {
     expect(component.searchReasonSeverity('Whatever')).toBe('default');
   });
 
-  it('formats the cycle duration down to the largest non-zero unit', () => {
+  it('measures a running cycle until now and a completed cycle until its completion', () => {
     const { component } = setup();
 
     vi.useFakeTimers();
     vi.setSystemTime(new Date('2026-07-31T12:00:00Z'));
 
-    expect(component.formatCycleDuration('2026-07-29T09:00:00Z')).toBe('2d 3h');
-    expect(component.formatCycleDuration('2026-07-31T07:00:00Z')).toBe('5h');
-    expect(component.formatCycleDuration('2026-07-31T11:30:00Z')).toBe('30m');
+    expect(component.cycleDuration(instance({ cycleStartedAt: '2026-07-29T09:00:00Z' }))).toBe('2d 3h');
+    expect(component.cycleDuration(instance({ cycleStartedAt: '2026-07-31T11:30:00Z' }))).toBe('30m');
+    expect(component.cycleDuration(instance({
+      cycleStartedAt: '2026-07-29T09:00:00Z',
+      cycleCompletedAt: '2026-07-29T09:20:00Z',
+    }))).toBe('20m');
+    expect(component.cycleDuration(instance({ cycleStartedAt: null }))).toBe('—');
   });
 
   it('toasts the error message when loading search stats fails', () => {
diff --git a/code/frontend/src/app/features/seeker-stats/searches-tab/searches-tab.component.ts b/code/frontend/src/app/features/seeker-stats/searches-tab/searches-tab.component.ts
index dd76e763..6ffa0614 100644
--- a/code/frontend/src/app/features/seeker-stats/searches-tab/searches-tab.component.ts
+++ b/code/frontend/src/app/features/seeker-stats/searches-tab/searches-tab.component.ts
@@ -316,7 +316,16 @@ export class SearchesTabComponent {
   readonly searchReasonSeverity = searchReasonSeverity;
   readonly cycleProgress = cycleProgress;
   readonly instanceHealthWarning = instanceHealthWarning;
-  readonly formatCycleDuration = formatCycleDuration;
+
+  cycleDuration(inst: InstanceSearchStat): string {
+    const { cycleStartedAt, cycleCompletedAt } = inst;
+    if (!cycleStartedAt) {
+      return '—';
+    }
+    return cycleCompletedAt
+      ? formatDurationBetween(cycleStartedAt, cycleCompletedAt)
+      : formatCycleDuration(cycleStartedAt);
+  }
 
   lastCycleDuration(inst: InstanceSearchStat): string {
     const { lastCycleStartedAt, lastCycleCompletedAt } = inst;