@@ -1,4 +1,5 @@
 import json
+import re
 from enum import StrEnum
 import logging
 import time
@@ -13,6 +14,7 @@ from ml_model.exceptions import (
     NSFWDetectedException,
     RealPersonDetectedError,
     RequestBlocked,
+    PromptLengthExceeded,
 )
 from poller.models import Proxy
 
@@ -111,6 +113,26 @@ class BytedanceModelArkAdapter:
             return 'video_url'
         return 'image_url'
 
+    @classmethod
+    def _handle_error_response(cls, resp: httpx.Response) -> None:
+        if resp.status_code == 413:
+            raise PromptLengthExceeded(max_length=202752)
+
+        if 'Input length' in resp.text and 'exceeds the maximum length' in resp.text:
+            match = re.search(r"Input length (\d+) exceeds the maximum length (\d+)", resp.text)
+            if match:
+                max_length = int(match.group(2))
+                raise PromptLengthExceeded(max_length=max_length)
+            raise PromptLengthExceeded(max_length=202752)
+
+        logger.error(
+            'Bytedance request failed status=%s route=%s body=%s',
+            resp.status_code,
+            cls.CONTENT_TYPE_TO_ENDPOINT.get(BytedanceContentType.CHAT),
+            resp.text,
+        )
+        raise GenerationException
+
     @classmethod
     def _raise_by_error_payload(cls, data: dict[str, Any], choices: list[dict[str, Any]]) -> None:
         choice_reasons = {str(choice.get('finish_reason', '')).lower() for choice in choices}
@@ -207,12 +229,7 @@ class BytedanceModelArkAdapter:
             ) as client:
                 resp = client.post(cls.CONTENT_TYPE_TO_ENDPOINT[BytedanceContentType.CHAT], json=payload)
                 if resp.status_code >= 400:
-                    logger.error(
-                        'Bytedance request failed status=%s route=%s body=%s',
-                        resp.status_code,
-                        cls.CONTENT_TYPE_TO_ENDPOINT[BytedanceContentType.CHAT],
-                        resp.text,
-                    )
+                    cls._handle_error_response(resp)
                 try:
                     data: BytedanceChatResponse = resp.json()
                 except Exception as exc:
@@ -278,13 +295,7 @@ class BytedanceModelArkAdapter:
                     'POST', cls.CONTENT_TYPE_TO_ENDPOINT[BytedanceContentType.CHAT], json=payload
                 ) as resp:
                     if resp.status_code >= 400:
-                        logger.error(
-                            'Bytedance request failed status=%s route=%s body=%s',
-                            resp.status_code,
-                            cls.CONTENT_TYPE_TO_ENDPOINT[BytedanceContentType.CHAT],
-                            resp.text,
-                        )
-                        raise GenerationException
+                        cls._handle_error_response(resp)
                     usage: BytedanceUsage = {}
                     reasoning_started = False
                     content_started = False