--- a/core/src/tools/spec_plan.rs
+++ b/core/src/tools/spec_plan.rs
@@ -937,15 +937,8 @@
     add_collaboration_tools(context, registry);
 }
 
-fn standalone_web_search_enabled(turn_context: &TurnContext) -> bool {
-    namespace_tools_enabled(turn_context)
-        && turn_context.provider.capabilities().web_search
-        && (turn_context.model_info.use_responses_lite
-            || turn_context
-                .config
-                .features
-                .get()
-                .enabled(Feature::StandaloneWebSearch))
+fn standalone_web_search_enabled(_turn_context: &TurnContext) -> bool {
+    false
 }
 
 fn tool_environment_mode(environments: &TurnEnvironmentSnapshot) -> ToolEnvironmentMode {
--- a/core/src/tools/spec_plan_tests.rs
+++ b/core/src/tools/spec_plan_tests.rs
@@ -2871,7 +2871,11 @@
         },
     )
     .await;
-    standalone_web_search.assert_visible_lacks(&["web_search"]);
+    standalone_web_search.assert_visible_contains(&["web_search"]);
+    assert_eq!(
+        standalone_web_search.namespace_function_names("web"),
+        &[] as &[String],
+    );
 
     let bedrock_cached_web_search = probe(|turn| {
         use_bedrock_provider(turn);
--- a/models-manager/models.json
+++ b/models-manager/models.json
@@ -18,7 +18,7 @@
       },
       "tool_mode": "code_mode_only",
       "multi_agent_version": "v2",
-      "use_responses_lite": true,
+      "use_responses_lite": false,
       "include_skills_usage_instructions": false,
       "include_plugin_usage_instructions": true,
       "include_apps_usage_instructions": true,
@@ -132,7 +132,7 @@
       },
       "tool_mode": "code_mode_only",
       "multi_agent_version": "v2",
-      "use_responses_lite": true,
+      "use_responses_lite": false,
       "include_skills_usage_instructions": false,
       "include_plugin_usage_instructions": true,
       "include_apps_usage_instructions": true,
@@ -244,7 +244,7 @@
       },
       "tool_mode": "code_mode_only",
       "multi_agent_version": "v1",
-      "use_responses_lite": true,
+      "use_responses_lite": false,
       "include_skills_usage_instructions": false,
       "include_plugin_usage_instructions": true,
       "include_apps_usage_instructions": true,
--- a/models-manager/src/manager_tests.rs
+++ b/models-manager/src/manager_tests.rs
@@ -30,6 +30,18 @@
 #[path = "model_info_overrides_tests.rs"]
 mod model_info_overrides_tests;
 
+#[test]
+fn bundled_gpt_5_6_models_use_full_responses_api() {
+    let models = load_remote_models_from_file().expect("bundled models should load");
+    for slug in ["gpt-5.6-sol", "gpt-5.6-terra", "gpt-5.6-luna"] {
+        let model = models
+            .iter()
+            .find(|model| model.slug == slug)
+            .unwrap_or_else(|| panic!("missing bundled model {slug}"));
+        assert!(!model.use_responses_lite, "{slug} must expose hosted tools");
+    }
+}
+
 const DEFAULT_HTTP_CLIENT_FACTORY: HttpClientFactory =
     HttpClientFactory::new(OutboundProxyPolicy::ReqwestDefault);