diff --git a/apps/app/src/features/openai/server/services/thread-deletion-cron.ts b/apps/app/src/features/openai/server/services/thread-deletion-cron.ts
index 8158fdcf3b0..b2dc8fbbaad 100644
--- a/apps/app/src/features/openai/server/services/thread-deletion-cron.ts
+++ b/apps/app/src/features/openai/server/services/thread-deletion-cron.ts
@@ -16,6 +16,8 @@ class ThreadDeletionCronService {
 
   threadDeletionCronExpression: string;
 
+  threadDeletionCronMaxMinutesUntilRequest: number;
+
   threadDeletionBarchSize: number;
 
   threadDeletionApiCallInterval: number;
@@ -35,6 +37,7 @@ class ThreadDeletionCronService {
 
     this.openaiService = openaiService;
     this.threadDeletionCronExpression = configManager.getConfig('crowi', 'openai:threadDeletionCronExpression');
+    this.threadDeletionCronMaxMinutesUntilRequest = configManager.getConfig('crowi', 'app:openaiThreadDeletionCronMaxMinutesUntilRequest');
     this.threadDeletionBarchSize = configManager.getConfig('crowi', 'openai:threadDeletionBarchSize');
     this.threadDeletionApiCallInterval = configManager.getConfig('crowi', 'openai:threadDeletionApiCallInterval');
 
@@ -51,8 +54,8 @@ class ThreadDeletionCronService {
   private generateCronJob() {
     return nodeCron.schedule(this.threadDeletionCronExpression, async() => {
       try {
-        // Sleep for a random number of minutes between 0 and 60 to distribute request load
-        const randomMilliseconds = getRandomIntInRange(0, 60) * 60 * 1000;
+        // Random fractional sleep to distribute request timing among GROWI apps
+        const randomMilliseconds = getRandomIntInRange(0, this.threadDeletionCronMaxMinutesUntilRequest) * 60 * 1000;
         this.sleep(randomMilliseconds);
 
         await this.executeJob();
diff --git a/apps/app/src/features/openai/server/services/vector-store-file-deletion-cron.ts b/apps/app/src/features/openai/server/services/vector-store-file-deletion-cron.ts
index 3df8f75764a..25f8ddc644f 100644
--- a/apps/app/src/features/openai/server/services/vector-store-file-deletion-cron.ts
+++ b/apps/app/src/features/openai/server/services/vector-store-file-deletion-cron.ts
@@ -16,6 +16,8 @@ class VectorStoreFileDeletionCronService {
 
   vectorStoreFileDeletionCronExpression: string;
 
+  vectorStoreFileDeletionCronMaxMinutesUntilRequest: number;
+
   vectorStoreFileDeletionBarchSize: number;
 
   vectorStoreFileDeletionApiCallInterval: number;
@@ -35,6 +37,7 @@ class VectorStoreFileDeletionCronService {
 
     this.openaiService = openaiService;
     this.vectorStoreFileDeletionCronExpression = configManager.getConfig('crowi', 'openai:vectorStoreFileDeletionCronExpression');
+    this.vectorStoreFileDeletionCronMaxMinutesUntilRequest = configManager.getConfig('crowi', 'app:openaiVectorStoreFileDeletionCronMaxMinutesUntilRequest');
     this.vectorStoreFileDeletionBarchSize = configManager.getConfig('crowi', 'openai:vectorStoreFileDeletionBarchSize');
     this.vectorStoreFileDeletionApiCallInterval = configManager.getConfig('crowi', 'openai:vectorStoreFileDeletionApiCallInterval');
 
@@ -51,8 +54,8 @@ class VectorStoreFileDeletionCronService {
   private generateCronJob() {
     return nodeCron.schedule(this.vectorStoreFileDeletionCronExpression, async() => {
       try {
-        // Sleep for a random number of minutes between 0 and 60 to distribute request load
-        const randomMilliseconds = getRandomIntInRange(0, 60) * 60 * 1000;
+        // Random fractional sleep to distribute request timing among GROWI apps
+        const randomMilliseconds = getRandomIntInRange(0, this.vectorStoreFileDeletionCronMaxMinutesUntilRequest) * 60 * 1000;
         this.sleep(randomMilliseconds);
 
         await this.executeJob();
diff --git a/apps/app/src/server/service/config-loader.ts b/apps/app/src/server/service/config-loader.ts
index 5a7816f5561..6b7b86549db 100644
--- a/apps/app/src/server/service/config-loader.ts
+++ b/apps/app/src/server/service/config-loader.ts
@@ -814,6 +814,12 @@ As this system is a Retrieval Augmented Generation (RAG), focus on answering que
     type: ValueType.STRING,
     default: '0 * * * *', // every hour
   },
+  OPENAI_THREAD_DELETION_CRON_MAX_MINUTES_UNTIL_REQUEST: {
+    ns: 'crowi',
+    key: 'app:openaiThreadDeletionCronMaxMinutesUntilRequest',
+    type: ValueType.NUMBER,
+    default: 60,
+  },
   OPENAI_THREAD_DELETION_BARCH_SIZE: {
     ns: 'crowi',
     key: 'openai:threadDeletionBarchSize',
@@ -832,6 +838,12 @@ As this system is a Retrieval Augmented Generation (RAG), focus on answering que
     type: ValueType.STRING,
     default: '0 * * * *', // every hour
   },
+  OPENAI_VECTOR_STORE_FILE_DELETION_CRON_MAX_MINUTES_UNTIL_REQUEST: {
+    ns: 'crowi',
+    key: 'app:openaiVectorStoreFileDeletionCronMaxMinutesUntilRequest',
+    type: ValueType.NUMBER,
+    default: 60,
+  },
   OPENAI_VECTOR_STORE_FILE_DELETION_BARCH_SIZE: {
     ns: 'crowi',
     key: 'openai:vectorStoreFileDeletionBarchSize',