diff --git a/backend/src/plugins/translate/executor.py b/backend/src/plugins/translate/executor.py
index 252ca9be..fc9edaa0 100644
--- a/backend/src/plugins/translate/executor.py
+++ b/backend/src/plugins/translate/executor.py
@@ -946,7 +946,7 @@ class TranslationExecutor:
                     {"role": "user", "content": prompt},
                 ],
                 "temperature": 0.1,
-                "max_tokens": 4096,
+                "max_tokens": 8192,
             }
             # Structured output (response_format) only for native OpenAI — upstream providers routed via
             # Kilo/OpenRouter may not support it (e.g. StepFun returns "structured_outputs is not supported")
diff --git a/backend/src/plugins/translate/preview.py b/backend/src/plugins/translate/preview.py
index 1ecc37e7..5a279a57 100644
--- a/backend/src/plugins/translate/preview.py
+++ b/backend/src/plugins/translate/preview.py
@@ -952,7 +952,7 @@ class TranslationPreview:
                     {"role": "user", "content": prompt},
                 ],
                 "temperature": 0.1,
-                "max_tokens": 4096,
+                "max_tokens": 8192,
             }
             # Structured output (response_format) only for native OpenAI — upstream providers routed via
             # Kilo/OpenRouter may not support it (e.g. StepFun returns "structured_outputs is not supported")