diff --git a/src/media-understanding/output-extract.ts b/src/media-understanding/output-extract.ts
new file mode 100644
index 0000000000..e8bf57c951
--- /dev/null
+++ b/src/media-understanding/output-extract.ts
@@ -0,0 +1,26 @@
+export function extractLastJsonObject(raw: string): unknown {
+  const trimmed = raw.trim();
+  const start = trimmed.lastIndexOf("{");
+  if (start === -1) {
+    return null;
+  }
+  const slice = trimmed.slice(start);
+  try {
+    return JSON.parse(slice);
+  } catch {
+    return null;
+  }
+}
+
+export function extractGeminiResponse(raw: string): string | null {
+  const payload = extractLastJsonObject(raw);
+  if (!payload || typeof payload !== "object") {
+    return null;
+  }
+  const response = (payload as { response?: unknown }).response;
+  if (typeof response !== "string") {
+    return null;
+  }
+  const trimmed = response.trim();
+  return trimmed || null;
+}
diff --git a/src/media-understanding/runner.entries.ts b/src/media-understanding/runner.entries.ts
index 8ef338c412..b40e16fa53 100644
--- a/src/media-understanding/runner.entries.ts
+++ b/src/media-understanding/runner.entries.ts
@@ -25,6 +25,7 @@ import {
   DEFAULT_TIMEOUT_SECONDS,
 } from "./defaults.js";
 import { MediaUnderstandingSkipError } from "./errors.js";
+import { extractGeminiResponse } from "./output-extract.js";
 import { describeImageWithModel } from "./providers/image.js";
 import { getMediaUnderstandingProvider, normalizeMediaProviderId } from "./providers/index.js";
 import { resolveMaxBytes, resolveMaxChars, resolvePrompt, resolveTimeoutMs } from "./resolve.js";
@@ -40,33 +41,6 @@ function trimOutput(text: string, maxChars?: number): string {
   return trimmed.slice(0, maxChars).trim();
 }
 
-function extractLastJsonObject(raw: string): unknown {
-  const trimmed = raw.trim();
-  const start = trimmed.lastIndexOf("{");
-  if (start === -1) {
-    return null;
-  }
-  const slice = trimmed.slice(start);
-  try {
-    return JSON.parse(slice);
-  } catch {
-    return null;
-  }
-}
-
-function extractGeminiResponse(raw: string): string | null {
-  const payload = extractLastJsonObject(raw);
-  if (!payload || typeof payload !== "object") {
-    return null;
-  }
-  const response = (payload as { response?: unknown }).response;
-  if (typeof response !== "string") {
-    return null;
-  }
-  const trimmed = response.trim();
-  return trimmed || null;
-}
-
 function extractSherpaOnnxText(raw: string): string | null {
   const tryParse = (value: string): string | null => {
     const trimmed = value.trim();
diff --git a/src/media-understanding/runner.ts b/src/media-understanding/runner.ts
index e0590c9817..8dd7e2f979 100644
--- a/src/media-understanding/runner.ts
+++ b/src/media-understanding/runner.ts
@@ -32,6 +32,7 @@ import {
   DEFAULT_IMAGE_MODELS,
 } from "./defaults.js";
 import { isMediaUnderstandingSkipError } from "./errors.js";
+import { extractGeminiResponse } from "./output-extract.js";
 import {
   buildMediaUnderstandingRegistry,
   getMediaUnderstandingProvider,
@@ -186,33 +187,6 @@ async function fileExists(filePath?: string | null): Promise<boolean> {
   }
 }
 
-function extractLastJsonObject(raw: string): unknown {
-  const trimmed = raw.trim();
-  const start = trimmed.lastIndexOf("{");
-  if (start === -1) {
-    return null;
-  }
-  const slice = trimmed.slice(start);
-  try {
-    return JSON.parse(slice);
-  } catch {
-    return null;
-  }
-}
-
-function extractGeminiResponse(raw: string): string | null {
-  const payload = extractLastJsonObject(raw);
-  if (!payload || typeof payload !== "object") {
-    return null;
-  }
-  const response = (payload as { response?: unknown }).response;
-  if (typeof response !== "string") {
-    return null;
-  }
-  const trimmed = response.trim();
-  return trimmed || null;
-}
-
 async function probeGeminiCli(): Promise<boolean> {
   const cached = geminiProbeCache.get("gemini");
   if (cached) {