diff --git a/codex-rs/config/src/tui_keymap.rs b/codex-rs/config/src/tui_keymap.rs
index fe842e7deb..fd9061cd7f 100644
--- a/codex-rs/config/src/tui_keymap.rs
+++ b/codex-rs/config/src/tui_keymap.rs
@@ -29,13 +29,15 @@ use std::collections::BTreeMap;
 pub enum TuiKeymapPreset {
     /// Pointer alias to the latest shipped preset.
     ///
-    /// Today this resolves to `v2`.
+    /// Today this resolves to `v3`.
     #[default]
     Latest,
     /// Frozen initial configurable keymap defaults.
     V1,
     /// Current defaults with post-`v1` compatibility aliases.
     V2,
+    /// Current defaults with the copy shortcut exposed through keymap config.
+    V3,
 }
 
 /// Normalized string representation of a keybinding (for example `ctrl-a`).
@@ -100,6 +102,8 @@ pub struct TuiGlobalKeymap {
     pub open_transcript: Option<KeybindingsSpec>,
     /// Open the external editor for the current draft.
     pub open_external_editor: Option<KeybindingsSpec>,
+    /// Copy the last agent response to the clipboard.
+    pub copy: Option<KeybindingsSpec>,
     /// In an empty composer, begin or advance "edit previous message" flow.
     pub edit_previous_message: Option<KeybindingsSpec>,
     /// Confirm editing the selected previous message.
diff --git a/codex-rs/core/config.schema.json b/codex-rs/core/config.schema.json
index a7998ee422..11a4f1a8a5 100644
--- a/codex-rs/core/config.schema.json
+++ b/codex-rs/core/config.schema.json
@@ -2231,6 +2231,7 @@
             },
             "global": {
               "confirm_edit_previous_message": null,
+              "copy": null,
               "edit_previous_message": null,
               "open_external_editor": null,
               "open_transcript": null,
@@ -2639,6 +2640,14 @@
           ],
           "description": "Confirm editing the selected previous message."
         },
+        "copy": {
+          "allOf": [
+            {
+              "$ref": "#/definitions/KeybindingsSpec"
+            }
+          ],
+          "description": "Copy the last agent response to the clipboard."
+        },
         "edit_previous_message": {
           "allOf": [
             {
@@ -2773,6 +2782,7 @@
           ],
           "default": {
             "confirm_edit_previous_message": null,
+            "copy": null,
             "edit_previous_message": null,
             "open_external_editor": null,
             "open_transcript": null,
@@ -2902,7 +2912,7 @@
       "description": "Versioned keymap defaults.",
       "oneOf": [
         {
-          "description": "Pointer alias to the latest shipped preset.\n\nToday this resolves to `v2`.",
+          "description": "Pointer alias to the latest shipped preset.\n\nToday this resolves to `v3`.",
           "enum": [
             "latest"
           ],
@@ -2921,6 +2931,13 @@
             "v2"
           ],
           "type": "string"
+        },
+        {
+          "description": "Current defaults with the copy shortcut exposed through keymap config.",
+          "enum": [
+            "v3"
+          ],
+          "type": "string"
         }
       ]
     },
diff --git a/codex-rs/tui/src/chatwidget.rs b/codex-rs/tui/src/chatwidget.rs
index bfdbacc03f..b6085c9986 100644
--- a/codex-rs/tui/src/chatwidget.rs
+++ b/codex-rs/tui/src/chatwidget.rs
@@ -354,6 +354,7 @@ use crate::history_cell::PlainHistoryCell;
 use crate::history_cell::WebSearchCell;
 use crate::key_hint;
 use crate::key_hint::KeyBinding;
+use crate::key_hint::KeyBindingListExt;
 use crate::keymap::RuntimeKeymap;
 use crate::keymap_setup;
 #[cfg(test)]
@@ -822,6 +823,7 @@ pub(crate) struct ChatWidget {
     plan_stream_controller: Option<PlanStreamController>,
     /// Holds the platform clipboard lease so copied text remains available while supported.
     clipboard_lease: Option<crate::clipboard_copy::ClipboardLease>,
+    copy_last_response_binding: Vec<KeyBinding>,
     /// Raw markdown of the most recently completed agent response that
     /// survived any local thread rollback.
     last_agent_markdown: Option<String>,
@@ -5155,6 +5157,12 @@ impl ChatWidget {
         let current_cwd = Some(config.cwd.to_path_buf());
         let effective_service_tier = config.service_tier;
         let queued_message_edit_binding = queued_message_edit_binding_for_terminal(terminal_info());
+        let runtime_keymap = RuntimeKeymap::from_config(&config.tui_keymap).ok();
+        let copy_last_response_binding = runtime_keymap
+            .as_ref()
+            .map(|keymap| keymap.app.copy.clone())
+            .unwrap_or_else(|| RuntimeKeymap::defaults().app.copy);
+
         let mut widget = Self {
             app_event_tx: app_event_tx.clone(),
             frame_requester: frame_requester.clone(),
@@ -5196,6 +5204,7 @@ impl ChatWidget {
             stream_controller: None,
             plan_stream_controller: None,
             clipboard_lease: None,
+            copy_last_response_binding,
             running_commands: HashMap::new(),
             collab_agent_metadata: HashMap::new(),
             pending_collab_spawn_requests: HashMap::new(),
@@ -5293,7 +5302,7 @@ impl ChatWidget {
         };
 
         widget.prefetch_rate_limits();
-        if let Ok(keymap) = RuntimeKeymap::from_config(&widget.config.tui_keymap) {
+        if let Some(keymap) = runtime_keymap {
             widget.bottom_pane.set_keymap_bindings(&keymap);
         }
         widget
@@ -5336,6 +5345,16 @@ impl ChatWidget {
     }
 
     pub(crate) fn handle_key_event(&mut self, key_event: KeyEvent) {
+        if key_event.kind == KeyEventKind::Press
+            && self.copy_last_response_binding.is_pressed(key_event)
+        {
+            self.bottom_pane.clear_quit_shortcut_hint();
+            self.quit_shortcut_expires_at = None;
+            self.quit_shortcut_key = None;
+            self.copy_last_agent_markdown();
+            return;
+        }
+
         if self.handle_reasoning_shortcut(key_event) {
             self.bottom_pane.clear_quit_shortcut_hint();
             self.quit_shortcut_expires_at = None;
@@ -5344,19 +5363,6 @@ impl ChatWidget {
         }
 
         match key_event {
-            // Ctrl+O - copy last agent response from the main view.
-            KeyEvent {
-                code: KeyCode::Char('o'),
-                modifiers: KeyModifiers::CONTROL,
-                kind: KeyEventKind::Press,
-                ..
-            } => {
-                self.bottom_pane.clear_quit_shortcut_hint();
-                self.quit_shortcut_expires_at = None;
-                self.quit_shortcut_key = None;
-                self.copy_last_agent_markdown();
-                return;
-            }
             KeyEvent {
                 code: KeyCode::Char(c),
                 modifiers,
@@ -8291,6 +8297,7 @@ impl ChatWidget {
         runtime_keymap: &RuntimeKeymap,
     ) {
         self.config.tui_keymap = keymap_config;
+        self.copy_last_response_binding = runtime_keymap.app.copy.clone();
         self.bottom_pane.set_keymap_bindings(runtime_keymap);
         self.request_redraw();
     }
diff --git a/codex-rs/tui/src/chatwidget/tests/slash_commands.rs b/codex-rs/tui/src/chatwidget/tests/slash_commands.rs
index 85b868ce76..7297a337c4 100644
--- a/codex-rs/tui/src/chatwidget/tests/slash_commands.rs
+++ b/codex-rs/tui/src/chatwidget/tests/slash_commands.rs
@@ -882,6 +882,33 @@ async fn ctrl_o_copy_reports_when_no_agent_response_exists() {
     );
 }
 
+#[tokio::test]
+async fn copy_shortcut_can_be_remapped() {
+    let (mut chat, mut rx, _op_rx) = make_chatwidget_manual(/*model_override*/ None).await;
+    let mut keymap_config = chat.config_ref().tui_keymap.clone();
+    keymap_config.global.copy = Some(codex_config::types::KeybindingsSpec::One(
+        codex_config::types::KeybindingSpec("ctrl-u".to_string()),
+    ));
+    let runtime_keymap =
+        RuntimeKeymap::from_config(&keymap_config).expect("copy remap should be valid");
+    chat.apply_keymap_update(keymap_config, &runtime_keymap);
+
+    chat.handle_key_event(KeyEvent::new(KeyCode::Char('o'), KeyModifiers::CONTROL));
+    assert!(
+        drain_insert_history(&mut rx).is_empty(),
+        "old copy shortcut should no longer copy"
+    );
+
+    chat.handle_key_event(KeyEvent::new(KeyCode::Char('u'), KeyModifiers::CONTROL));
+    let cells = drain_insert_history(&mut rx);
+    assert_eq!(cells.len(), 1, "expected one info message");
+    let rendered = lines_to_single_string(&cells[0]);
+    assert!(
+        rendered.contains("No agent response to copy"),
+        "expected remapped copy shortcut to run, got {rendered:?}"
+    );
+}
+
 #[tokio::test]
 async fn slash_copy_stores_clipboard_lease_and_preserves_it_on_failure() {
     let (mut chat, mut rx, _op_rx) = make_chatwidget_manual(/*model_override*/ None).await;
diff --git a/codex-rs/tui/src/keymap.rs b/codex-rs/tui/src/keymap.rs
index b954ae52fa..65a3f18b5c 100644
--- a/codex-rs/tui/src/keymap.rs
+++ b/codex-rs/tui/src/keymap.rs
@@ -33,7 +33,7 @@ use std::collections::HashMap;
 ///
 /// 1. Context-specific binding (`tui.keymap.<context>`).
 /// 2. `tui.keymap.global` for actions that support global fallback.
-/// 3. Built-in preset defaults (`latest` currently points to `v1`).
+/// 3. Built-in preset defaults (`latest` currently points to `v3`).
 #[derive(Clone, Debug)]
 pub(crate) struct RuntimeKeymap {
     pub(crate) app: AppKeymap,
@@ -54,6 +54,8 @@ pub(crate) struct AppKeymap {
     pub(crate) open_transcript: Vec<KeyBinding>,
     /// Open external editor for the current draft.
     pub(crate) open_external_editor: Vec<KeyBinding>,
+    /// Copy the last agent response to the clipboard.
+    pub(crate) copy: Vec<KeyBinding>,
     /// Toggle Vim mode for the composer input.
     pub(crate) toggle_vim_mode: Vec<KeyBinding>,
 }
@@ -349,6 +351,11 @@ impl RuntimeKeymap {
                 &defaults.app.open_external_editor,
                 "tui.keymap.global.open_external_editor",
             )?,
+            copy: resolve_bindings(
+                keymap.global.copy.as_ref(),
+                &defaults.app.copy,
+                "tui.keymap.global.copy",
+            )?,
             toggle_vim_mode: resolve_bindings(
                 keymap.global.toggle_vim_mode.as_ref(),
                 &defaults.app.toggle_vim_mode,
@@ -514,7 +521,8 @@ impl RuntimeKeymap {
 
     fn defaults_for_preset(preset: TuiKeymapPreset) -> Self {
         match preset {
-            TuiKeymapPreset::Latest | TuiKeymapPreset::V2 => Self::defaults_v2(),
+            TuiKeymapPreset::Latest | TuiKeymapPreset::V3 => Self::defaults_v3(),
+            TuiKeymapPreset::V2 => Self::defaults_v2(),
             TuiKeymapPreset::V1 => Self::defaults_v1(),
         }
     }
@@ -529,6 +537,7 @@ impl RuntimeKeymap {
             app: AppKeymap {
                 open_transcript: default_bindings![ctrl(KeyCode::Char('t'))],
                 open_external_editor: default_bindings![ctrl(KeyCode::Char('g'))],
+                copy: default_bindings![],
                 toggle_vim_mode: default_bindings![],
             },
             chat: ChatKeymap {
@@ -732,6 +741,16 @@ impl RuntimeKeymap {
         defaults
     }
 
+    /// Current keymap defaults for preset `v3`.
+    ///
+    /// This keeps earlier presets intact while moving the existing Copy
+    /// shortcut into configurable keymap defaults.
+    fn defaults_v3() -> Self {
+        let mut defaults = Self::defaults_v2();
+        defaults.app.copy = default_bindings![ctrl(KeyCode::Char('o'))];
+        defaults
+    }
+
     /// Reject ambiguous bindings in scopes that are evaluated together.
     ///
     /// We validate in multiple passes because runtime handling has mixed
@@ -753,6 +772,7 @@ impl RuntimeKeymap {
                     "open_external_editor",
                     self.app.open_external_editor.as_slice(),
                 ),
+                ("copy", self.app.copy.as_slice()),
                 ("toggle_vim_mode", self.app.toggle_vim_mode.as_slice()),
                 (
                     "edit_previous_message",
@@ -773,6 +793,7 @@ impl RuntimeKeymap {
                     "open_external_editor",
                     self.app.open_external_editor.as_slice(),
                 ),
+                ("copy", self.app.copy.as_slice()),
                 ("toggle_vim_mode", self.app.toggle_vim_mode.as_slice()),
                 ("composer.submit", self.composer.submit.as_slice()),
                 ("composer.queue", self.composer.queue.as_slice()),
@@ -1254,6 +1275,21 @@ mod tests {
         assert!(err.contains("tui.keymap.global.open_external_editor"));
     }
 
+    #[test]
+    fn default_latest_copy_binding_is_ctrl_o() {
+        let runtime = RuntimeKeymap::defaults();
+        assert_eq!(runtime.app.copy, vec![key_hint::ctrl(KeyCode::Char('o'))]);
+    }
+
+    #[test]
+    fn invalid_global_copy_binding_reports_global_path() {
+        let mut keymap = TuiKeymap::default();
+        keymap.global.copy = Some(one("meta-o"));
+
+        let err = RuntimeKeymap::from_config(&keymap).expect_err("expected parse error");
+        assert!(err.contains("tui.keymap.global.copy"));
+    }
+
     #[test]
     fn rejects_conflicting_chat_bindings() {
         let mut keymap = TuiKeymap::default();
diff --git a/codex-rs/tui/src/keymap_setup/actions.rs b/codex-rs/tui/src/keymap_setup/actions.rs
index 2e3176dc5a..defa9346a9 100644
--- a/codex-rs/tui/src/keymap_setup/actions.rs
+++ b/codex-rs/tui/src/keymap_setup/actions.rs
@@ -34,6 +34,7 @@ const fn action(
 pub(super) const KEYMAP_ACTIONS: &[KeymapActionDescriptor] = &[
     action("global", "Global", "open_transcript", "Open the transcript overlay."),
     action("global", "Global", "open_external_editor", "Open the current draft in an external editor."),
+    action("global", "Global", "copy", "Copy the last agent response to the clipboard."),
     action("global", "Global", "toggle_vim_mode", "Turn Vim composer mode on or off."),
     action("chat", "Chat", "edit_previous_message", "Begin or advance edit-previous-message when the composer is empty."),
     action("chat", "Chat", "confirm_edit_previous_message", "Confirm the selected previous message to edit."),
@@ -147,6 +148,7 @@ pub(super) fn binding_slot<'a>(
     match (context, action) {
         ("global", "open_transcript") => Some(&mut keymap.global.open_transcript),
         ("global", "open_external_editor") => Some(&mut keymap.global.open_external_editor),
+        ("global", "copy") => Some(&mut keymap.global.copy),
         ("global", "toggle_vim_mode") => Some(&mut keymap.global.toggle_vim_mode),
         ("chat", "edit_previous_message") => Some(&mut keymap.chat.edit_previous_message),
         ("chat", "confirm_edit_previous_message") => Some(&mut keymap.chat.confirm_edit_previous_message),
@@ -248,6 +250,7 @@ pub(super) fn bindings_for_action<'a>(
     match (context, action) {
         ("global", "open_transcript") => Some(runtime_keymap.app.open_transcript.as_slice()),
         ("global", "open_external_editor") => Some(runtime_keymap.app.open_external_editor.as_slice()),
+        ("global", "copy") => Some(runtime_keymap.app.copy.as_slice()),
         ("global", "toggle_vim_mode") => Some(runtime_keymap.app.toggle_vim_mode.as_slice()),
         ("chat", "edit_previous_message") => Some(runtime_keymap.chat.edit_previous_message.as_slice()),
         ("chat", "confirm_edit_previous_message") => Some(runtime_keymap.chat.confirm_edit_previous_message.as_slice()),
diff --git a/docs/config.md b/docs/config.md
index 4ee0e79709..9b55d8eab5 100644
--- a/docs/config.md
+++ b/docs/config.md
@@ -36,18 +36,19 @@ Precedence is applied in this order (highest first):
 
 ### Presets
 
-- `latest`: moving alias for the newest preset; today `latest -> v2`
-- `v2`: current defaults, restoring `alt-d` as a `delete_forward_word` alias
+- `latest`: moving alias for the newest preset; today `latest -> v3`
+- `v3`: current defaults, exposing `copy = "ctrl-o"` in the keymap
+- `v2`: restores `alt-d` as a `delete_forward_word` alias
 - `v1`: frozen initial configurable keymap defaults
 
-When defaults change in the future, a new version (for example `v3`) is added and
+When defaults change in the future, a new version (for example `v4`) is added and
 `latest` may move to it. Pin to `v1` if you want stable historical behavior.
 
 TODO(docs): mirror this preset migration note on developers.openai.com.
 
 ### Supported actions
 
-- `global`: `open_transcript`, `open_external_editor`, `edit_previous_message`,
+- `global`: `open_transcript`, `open_external_editor`, `copy`, `edit_previous_message`,
   `confirm_edit_previous_message`, `submit`, `queue`, `toggle_shortcuts`,
   `toggle_vim_mode`
 - `chat`: `edit_previous_message`, `confirm_edit_previous_message`
diff --git a/docs/default-keymap.toml b/docs/default-keymap.toml
index 38c8b8fae7..66ac45c952 100644
--- a/docs/default-keymap.toml
+++ b/docs/default-keymap.toml
@@ -1,4 +1,4 @@
-# Codex TUI keymap template (v1 defaults)
+# Codex TUI keymap template (latest defaults)
 #
 # Copy the sections you need into ~/.codex/config.toml.
 #
@@ -18,7 +18,7 @@
 
 [tui.keymap]
 # Preset alias for built-in defaults.
-# "latest" currently points to "v1".
+# "latest" currently points to "v3".
 preset = "latest"
 
 [tui.keymap.global]
@@ -26,6 +26,8 @@ preset = "latest"
 open_transcript = "ctrl-t"
 # Open external editor for current draft.
 open_external_editor = "ctrl-g"
+# Copy the last agent response to the clipboard.
+copy = "ctrl-o"
 # Begin/advance "edit previous message" when composer is empty.
 edit_previous_message = "esc"
 # Confirm selected message in edit-previous flow.
diff --git a/docs/keymap-action-matrix.md b/docs/keymap-action-matrix.md
index b399bf135e..68353da9b4 100644
--- a/docs/keymap-action-matrix.md
+++ b/docs/keymap-action-matrix.md
@@ -1,20 +1,20 @@
 # TUI Keymap Action Matrix
 
-This file defines the supported keymap actions and their default `v1` bindings.
+This file defines the supported keymap actions and their current default bindings.
 For runtime behavior, safety invariants, and testing guidance, see
 `docs/tui-keymap.md`.
 
 ## Preset behavior
 
 - `latest` is an alias to the newest shipped preset.
-- Today, `latest -> v1`.
+- Today, `latest -> v3`.
 - To keep stable behavior over time, pin `preset = "v1"`.
 
 ## Precedence
 
 1. `tui.keymap.<context>.<action>`
 2. `tui.keymap.global.<action>` (chat/composer fallback actions only)
-3. Preset default (`v1` today)
+3. Preset default (`v3` today)
 
 ## Default `v1` Compatibility Notes
 
@@ -36,6 +36,7 @@ For runtime behavior, safety invariants, and testing guidance, see
 
 - `open_transcript`: open transcript overlay
 - `open_external_editor`: open external editor for current draft
+- `copy`: copy last agent response to the clipboard
 - `edit_previous_message`: begin/advance edit-previous flow when composer is empty
 - `confirm_edit_previous_message`: confirm selected previous message for editing
 - `submit`: submit current draft
diff --git a/docs/tui-keymap.md b/docs/tui-keymap.md
index bf629f4fab..e34beb6cf6 100644
--- a/docs/tui-keymap.md
+++ b/docs/tui-keymap.md
@@ -85,8 +85,8 @@ at `https://github.com/openai/codex/blob/main/docs/default-keymap.toml`.
 Preset semantics:
 
 1. `latest` is an alias to the newest shipped preset.
-2. `v2` is the current baseline; `v1` is frozen for historical behavior.
-3. Today, `latest -> v2`.
+2. `v3` is the current baseline; `v1` and `v2` are frozen for historical behavior.
+3. Today, `latest -> v3`.
 
 User guidance:
 
@@ -96,7 +96,7 @@ User guidance:
 Developer policy:
 
 1. Do not mutate old preset defaults after release.
-2. Add a new version (for example `v3`) for behavior changes.
+2. Add a new version (for example `v4`) for behavior changes.
 3. Update docs and migration notes whenever `latest` changes.
 
 Migration notes:
@@ -104,6 +104,9 @@ Migration notes:
 `v2` restores `alt-d` as a `delete_forward_word` alias while preserving
 `alt-delete` from `v1`.
 
+`v3` exposes the Copy shortcut as `global.copy = "ctrl-o"` so it can be
+remapped or unbound through `[tui.keymap]`.
+
 TODO(docs): mirror this preset migration note on developers.openai.com.
 
 Compatibility detail: