diff --git a/aider/coders/base_coder.py b/aider/coders/base_coder.py
index cac2b4bea..60bd9c0a8 100755
--- a/aider/coders/base_coder.py
+++ b/aider/coders/base_coder.py
@@ -1782,12 +1782,21 @@ class Coder:
                 reasoning_content = chunk.choices[0].delta.reasoning_content
                 if reasoning_content:
                     if not self.got_reasoning_content:
-                        text += f"<{REASONING_TAG}>\n\n"
+                        text += f"<{self.reasoning_tag_name}>\n\n"
                     text += reasoning_content
                     self.got_reasoning_content = True
                     received_content = True
             except AttributeError:
-                pass
+                try:
+                    reasoning_content = chunk.choices[0].delta.reasoning
+                    if reasoning_content:
+                        if not self.got_reasoning_content:
+                            text += f"<{self.reasoning_tag_name}>\n\n"
+                        text += reasoning_content
+                        self.got_reasoning_content = True
+                        received_content = True
+                except AttributeError:
+                    pass
 
             try:
                 content = chunk.choices[0].delta.content