diff --git a/scripts/mma_exec.py b/scripts/mma_exec.py
index d4256a7..d59c8e6 100644
--- a/scripts/mma_exec.py
+++ b/scripts/mma_exec.py
@@ -68,13 +68,17 @@ def get_model_for_role(role: str) -> str:
     if role == 'tier1-orchestrator' or role == 'tier1':
         return 'gemini-3.1-pro-preview'
     elif role == 'tier2-tech-lead' or role == 'tier2':
-        return 'gemini-3-flash-preview'
+        return 'gemini-3.1-pro-preview'
+        # return 'gemini-3-flash-preview'
     elif role == 'tier3-worker' or role == 'tier3':
-        return 'gemini-3-flash-preview'
+        # return 'gemini-3-flash-preview'
+        return 'gemini-3.1-pro-preview'
     elif role == 'tier4-qa' or role == 'tier4':
-        return 'gemini-2.5-flash-lite'
+        # return 'gemini-2.5-flash-lite'
+        return 'gemini-3.1-pro-preview'
     else:
-        return 'gemini-2.5-flash-lite'
+        # return 'gemini-2.5-flash-lite'
+        return 'gemini-3.1-pro-preview'
 
 def get_role_documents(role: str) -> list[str]:
     if role == 'tier1-orchestrator' or role == 'tier1':