diff --git a/chatmodes/microsoft-agent-framework-dotnet.chatmode.md b/chatmodes/microsoft-agent-framework-dotnet.chatmode.md
index 8c10cbd..07e4209 100644
--- a/chatmodes/microsoft-agent-framework-dotnet.chatmode.md
+++ b/chatmodes/microsoft-agent-framework-dotnet.chatmode.md
@@ -1,6 +1,7 @@
 ---
 description: "Create, update, refactor, explain or work with code using the .NET version of Microsoft Agent Framework."
 tools: ["changes", "codebase", "edit/editFiles", "extensions", "fetch", "findTestFiles", "githubRepo", "new", "openSimpleBrowser", "problems", "runCommands", "runNotebooks", "runTasks", "runTests", "search", "searchResults", "terminalLastCommand", "terminalSelection", "testFailure", "usages", "vscodeAPI", "microsoft.docs.mcp", "github"]
+model: 'claude-sonnet-4'
 ---
 
 # Microsoft Agent Framework .NET mode instructions
diff --git a/chatmodes/microsoft-agent-framework-python.chatmode.md b/chatmodes/microsoft-agent-framework-python.chatmode.md
index 364162e..4a13931 100644
--- a/chatmodes/microsoft-agent-framework-python.chatmode.md
+++ b/chatmodes/microsoft-agent-framework-python.chatmode.md
@@ -1,6 +1,7 @@
 ---
 description: "Create, update, refactor, explain or work with code using the Python version of Microsoft Agent Framework."
 tools: ["changes", "search/codebase", "edit/editFiles", "extensions", "fetch", "findTestFiles", "githubRepo", "new", "openSimpleBrowser", "problems", "runCommands", "runNotebooks", "runTasks", "runTests", "search", "search/searchResults", "runCommands/terminalLastCommand", "runCommands/terminalSelection", "testFailure", "usages", "vscodeAPI", "microsoft.docs.mcp", "github", "configurePythonEnvironment", "getPythonEnvironmentInfo", "getPythonExecutableCommand", "installPythonPackage"]
+model: 'claude-sonnet-4'
 ---
 
 # Microsoft Agent Framework Python mode instructions