diff --git a/metagpt/provider/openai_api.py b/metagpt/provider/openai_api.py
index 9406346ac..157c353a8 100644
--- a/metagpt/provider/openai_api.py
+++ b/metagpt/provider/openai_api.py
@@ -233,7 +233,7 @@ class OpenAIGPTAPI(BaseGPTAPI, RateLimiter):
 
             padding_size = 20 if max_token_count > 20 else 0
             text_windows = self.split_texts(text, window_size=max_token_count - padding_size)
-            part_max_words = min(int(max_words / len(text_windows)) + 1, 200)
+            part_max_words = min(int(max_words / len(text_windows)) + 1, 100)
             summaries = []
             for ws in text_windows:
                 response = await self._get_summary(text=ws, max_words=part_max_words, keep_language=keep_language)