diff --git a/src/app/api/documents/[id]/parsed/route.ts b/src/app/api/documents/[id]/parsed/route.ts
index 4fe7ea5..4c38631 100644
--- a/src/app/api/documents/[id]/parsed/route.ts
+++ b/src/app/api/documents/[id]/parsed/route.ts
@@ -1,3 +1,4 @@
+import { randomUUID } from 'node:crypto';
 import { NextRequest, NextResponse } from 'next/server';
 import { and, eq, inArray } from 'drizzle-orm';
 import { db } from '@/db';
@@ -204,6 +205,7 @@ export async function POST(req: NextRequest, ctx: { params: Promise<{ id: string
       documentId: id,
       userId: row.userId,
       namespace: testNamespace,
+      forceToken: randomUUID(),
     });
 
     return NextResponse.json(
diff --git a/src/lib/server/compute/types.ts b/src/lib/server/compute/types.ts
index 9b86c20..524857b 100644
--- a/src/lib/server/compute/types.ts
+++ b/src/lib/server/compute/types.ts
@@ -24,6 +24,7 @@ export interface PdfLayoutInput {
   namespace?: string | null;
   documentObjectKey?: string;
   pdfBytes?: ArrayBuffer;
+  forceToken?: string;
   onProgress?: (progress: PdfLayoutProgress) => void | Promise<void>;
 }
 
diff --git a/src/lib/server/compute/worker.ts b/src/lib/server/compute/worker.ts
index 733c133..4ec9c79 100644
--- a/src/lib/server/compute/worker.ts
+++ b/src/lib/server/compute/worker.ts
@@ -166,13 +166,14 @@ function buildWhisperOpKey(input: WhisperAlignInput): string {
   ].join('|');
 }
 
-function buildPdfOpKey(input: PdfLayoutInput): string {
+export function buildPdfOpKey(input: PdfLayoutInput): string {
   return [
     'pdf_layout',
     'v1',
     input.documentId,
     input.namespace ?? '',
     input.documentObjectKey ?? '',
+    input.forceToken?.trim() || '',
   ].join('|');
 }
 
diff --git a/src/lib/server/jobs/parsePdfJob.ts b/src/lib/server/jobs/parsePdfJob.ts
index bd4e3d3..87ac52c 100644
--- a/src/lib/server/jobs/parsePdfJob.ts
+++ b/src/lib/server/jobs/parsePdfJob.ts
@@ -11,6 +11,7 @@ interface ParsePdfJobInput {
   documentId: string;
   userId: string;
   namespace: string | null;
+  forceToken?: string;
 }
 
 const running = new Set<string>();
@@ -59,6 +60,7 @@ export async function parsePdfJob(input: ParsePdfJobInput): Promise<void> {
       documentId: input.documentId,
       namespace: input.namespace,
       documentObjectKey: documentKey(input.documentId, input.namespace),
+      forceToken: input.forceToken,
       onProgress: writeProgress,
     });
 
diff --git a/tests/unit/compute-worker-op-key.spec.ts b/tests/unit/compute-worker-op-key.spec.ts
new file mode 100644
index 0000000..2101af6
--- /dev/null
+++ b/tests/unit/compute-worker-op-key.spec.ts
@@ -0,0 +1,29 @@
+import { expect, test } from '@playwright/test';
+import { buildPdfOpKey } from '../../src/lib/server/compute/worker';
+
+test.describe('compute worker pdf opKey', () => {
+  test('keeps stable key when no force token is provided', () => {
+    const base = {
+      documentId: 'doc-123',
+      namespace: 'ns-1',
+      documentObjectKey: 'docs/ns-1/doc-123',
+    };
+    expect(buildPdfOpKey(base)).toBe('pdf_layout|v1|doc-123|ns-1|docs/ns-1/doc-123|');
+    expect(buildPdfOpKey(base)).toBe(buildPdfOpKey(base));
+  });
+
+  test('cache-busts key when force token is provided', () => {
+    const base = {
+      documentId: 'doc-123',
+      namespace: 'ns-1',
+      documentObjectKey: 'docs/ns-1/doc-123',
+    };
+    const opKeyA = buildPdfOpKey({ ...base, forceToken: 'force-a' });
+    const opKeyB = buildPdfOpKey({ ...base, forceToken: 'force-b' });
+    const normal = buildPdfOpKey(base);
+
+    expect(opKeyA).not.toBe(opKeyB);
+    expect(opKeyA).not.toBe(normal);
+    expect(opKeyB).not.toBe(normal);
+  });
+});