diff --git a/codex-rs/tui/src/chatwidget/snapshots/codex_tui__chatwidget__tests__status_line_fast_mode_footer.snap b/codex-rs/tui/src/chatwidget/snapshots/codex_tui__chatwidget__tests__status_line_fast_mode_footer.snap
index c558ac4726..5848dac563 100644
--- a/codex-rs/tui/src/chatwidget/snapshots/codex_tui__chatwidget__tests__status_line_fast_mode_footer.snap
+++ b/codex-rs/tui/src/chatwidget/snapshots/codex_tui__chatwidget__tests__status_line_fast_mode_footer.snap
@@ -6,4 +6,4 @@ expression: normalized_backend_snapshot(terminal.backend())
 "                                                                                "
 "› Ask Codex to do anything                                                      "
 "                                                                                "
-"  Fast on                                                                       "
+"  gpt-5.2 high                                                                  "
diff --git a/codex-rs/tui/src/chatwidget/status_surfaces.rs b/codex-rs/tui/src/chatwidget/status_surfaces.rs
index 66c7b26d8a..8f37252bf3 100644
--- a/codex-rs/tui/src/chatwidget/status_surfaces.rs
+++ b/codex-rs/tui/src/chatwidget/status_surfaces.rs
@@ -760,13 +760,23 @@ impl ChatWidget {
                 .and_then(|usage| usage.estimated_usage_usd_micros)
                 .and_then(format_estimated_usd_micros),
             StatusLineItem::SessionId => self.thread_id.map(|id| id.to_string()),
-            StatusLineItem::FastMode => Some(
-                if self.current_service_tier() == Some(ServiceTier::Fast.request_value()) {
-                    "Fast on".to_string()
-                } else {
-                    "Fast off".to_string()
-                },
-            ),
+            StatusLineItem::FastMode => self
+                .model_catalog
+                .try_list_models()
+                .ok()
+                .and_then(|models| {
+                    models
+                        .into_iter()
+                        .find(|preset| preset.model == self.current_model())
+                })
+                .is_none_or(|preset| preset.supports_fast_mode())
+                .then(|| {
+                    if self.current_service_tier() == Some(ServiceTier::Fast.request_value()) {
+                        "Fast on".to_string()
+                    } else {
+                        "Fast off".to_string()
+                    }
+                }),
             StatusLineItem::RawOutput => self.raw_output_mode().then(|| "raw output".to_string()),
             StatusLineItem::ThreadTitle => self.thread_name.as_ref().map_or_else(
                 || self.thread_id.map(|id| id.to_string()),
diff --git a/codex-rs/tui/src/chatwidget/tests/status_and_layout.rs b/codex-rs/tui/src/chatwidget/tests/status_and_layout.rs
index b80923dfd9..52a9e34972 100644
--- a/codex-rs/tui/src/chatwidget/tests/status_and_layout.rs
+++ b/codex-rs/tui/src/chatwidget/tests/status_and_layout.rs
@@ -3806,7 +3806,8 @@ async fn completed_turn_clears_visible_running_hook() {
 
 #[tokio::test]
 async fn status_line_fast_mode_renders_on_and_off() {
-    let (mut chat, _rx, _op_rx) = make_chatwidget_manual(/*model_override*/ None).await;
+    let (mut chat, _rx, _op_rx) = make_chatwidget_manual(Some("gpt-5.4")).await;
+    set_fast_mode_test_catalog(&mut chat);
     chat.config.tui_status_line = Some(vec!["fast-mode".to_string()]);
 
     chat.refresh_status_line();
@@ -3817,15 +3818,40 @@ async fn status_line_fast_mode_renders_on_and_off() {
     assert_eq!(status_line_text(&chat), Some("Fast on".to_string()));
 }
 
+#[tokio::test]
+async fn status_line_fast_mode_updates_visibility_on_model_change() {
+    let (mut chat, _rx, _op_rx) = make_chatwidget_manual(Some("gpt-5.4")).await;
+    set_fast_mode_test_catalog(&mut chat);
+    chat.config.tui_status_line = Some(vec!["fast-mode".to_string()]);
+
+    chat.refresh_status_line();
+    assert_eq!(status_line_text(&chat), Some("Fast off".to_string()));
+
+    chat.set_model("gpt-5.2");
+    assert_eq!(status_line_text(&chat), None);
+
+    chat.set_model("gpt-5.4");
+    assert_eq!(status_line_text(&chat), Some("Fast off".to_string()));
+
+    chat.set_model("uncatalogued-model");
+    assert_eq!(status_line_text(&chat), Some("Fast off".to_string()));
+    chat.set_service_tier(Some(ServiceTier::Fast.request_value().to_string()));
+    assert_eq!(status_line_text(&chat), Some("Fast on".to_string()));
+}
+
 #[tokio::test]
 async fn status_line_fast_mode_footer_snapshot() {
     use ratatui::Terminal;
     use ratatui::backend::TestBackend;
 
-    let (mut chat, _rx, _op_rx) = make_chatwidget_manual(/*model_override*/ None).await;
+    let (mut chat, _rx, _op_rx) = make_chatwidget_manual(Some("gpt-5.2")).await;
+    set_fast_mode_test_catalog(&mut chat);
     chat.show_welcome_banner = false;
-    chat.config.tui_status_line = Some(vec!["fast-mode".to_string()]);
-    chat.set_service_tier(Some(ServiceTier::Fast.request_value().to_string()));
+    chat.config.tui_status_line = Some(vec![
+        "model-with-reasoning".to_string(),
+        "fast-mode".to_string(),
+    ]);
+    chat.set_reasoning_effort(Some(ReasoningEffortConfig::High));
     chat.refresh_status_line();
 
     let width = 80;