diff --git a/app_chatgpt/models/mail_channel.py b/app_chatgpt/models/mail_channel.py
index 6c6da226..e16cd950 100644
--- a/app_chatgpt/models/mail_channel.py
+++ b/app_chatgpt/models/mail_channel.py
@@ -197,6 +197,9 @@ class Channel(models.Model):
                 if c_history:
                     messages += c_history
                 messages.append({"role": "user", "content": msg})
+                msg_len = sum(len(str(m)) for m in messages)
+                if msg_len * 2 >= ai.max_tokens * 0.6:
+                    messages = [{"role": "user", "content": msg}]
                 if sync_config == 'sync':
                     self.get_ai_response(ai, messages, channel, user_id, message)
                 else: