diff --git a/config.py b/config.py
index f995bc3..75135b2 100644
--- a/config.py
+++ b/config.py
@@ -14,7 +14,7 @@ import os
 # These values are used in server responses and for tracking releases
 # IMPORTANT: This is the single source of truth for version and author info
 # Semantic versioning: MAJOR.MINOR.PATCH
-__version__ = "5.7.3"
+__version__ = "5.7.4"
 # Last update date in ISO format
 __updated__ = "2025-06-27"
 # Primary maintainer
diff --git a/providers/openrouter.py b/providers/openrouter.py
index 18d3d5e..b5e6ea7 100644
--- a/providers/openrouter.py
+++ b/providers/openrouter.py
@@ -178,6 +178,11 @@ class OpenRouterProvider(OpenAICompatibleProvider):
         # Resolve model alias to actual OpenRouter model name
         resolved_model = self._resolve_model_name(model_name)
 
+        # Always disable streaming for OpenRouter
+        # MCP doesn't use streaming, and this avoids issues with O3 model access
+        if "stream" not in kwargs:
+            kwargs["stream"] = False
+
         # Call parent method with resolved model name
         return super().generate_content(
             prompt=prompt,