diff --git a/aider/resources/model-settings.yml b/aider/resources/model-settings.yml
index 16fcfcfd9..7b5970d6e 100644
--- a/aider/resources/model-settings.yml
+++ b/aider/resources/model-settings.yml
@@ -1139,6 +1139,7 @@
   examples_as_sys_msg: false
 
 - name: o3
+  streaming: false
   edit_format: diff
   weak_model_name: gpt-4.1-mini
   use_repo_map: true