splash screen (#8270)

# External (non-OpenAI) Pull Request Requirements

Before opening this Pull Request, please read the dedicated
"Contributing" markdown file or your PR may be closed:
https://github.com/openai/codex/blob/main/docs/contributing.md

If your PR conforms to our contribution guidelines, replace this text
with a detailed and high quality description of your changes.

Include a link to a bug report or enhancement request.

codex-rs/core/src/openai_models/model_presets.rs

@@ -65,12 +65,7 @@ static PRESETS: Lazy<Vec<ModelPreset>> = Lazy::new(|| {
                 },
             ],
             is_default: false,
-            upgrade: Some(ModelUpgrade {
+            upgrade: Some(gpt_52_codex_upgrade()),
-                id: "gpt-5.2-codex".to_string(),
-                reasoning_effort_mapping: None,
-                migration_config_key: "gpt-5.2-codex".to_string(),
-                model_link: Some("https://openai.com/index/introducing-gpt-5-2-codex".to_string()),
-            }),
             show_in_picker: true,
             supported_in_api: true,
         },
@@ -92,12 +87,7 @@ static PRESETS: Lazy<Vec<ModelPreset>> = Lazy::new(|| {
                 },
             ],
             is_default: false,
-            upgrade: Some(ModelUpgrade {
+            upgrade: Some(gpt_52_codex_upgrade()),
-                id: "gpt-5.2-codex".to_string(),
-                reasoning_effort_mapping: None,
-                migration_config_key: "gpt-5.2-codex".to_string(),
-                model_link: Some("https://openai.com/index/introducing-gpt-5-2-codex".to_string()),
-            }),
             show_in_picker: true,
             supported_in_api: true,
         },
@@ -126,12 +116,7 @@ static PRESETS: Lazy<Vec<ModelPreset>> = Lazy::new(|| {
                 },
             ],
             is_default: false,
-            upgrade: Some(ModelUpgrade {
+            upgrade: Some(gpt_52_codex_upgrade()),
-                id: "gpt-5.2-codex".to_string(),
-                reasoning_effort_mapping: None,
-                migration_config_key: "gpt-5.2-codex".to_string(),
-                model_link: Some("https://openai.com/index/introducing-gpt-5-2-codex".to_string()),
-            }),
             show_in_picker: true,
             supported_in_api: true,
         },
@@ -157,12 +142,7 @@ static PRESETS: Lazy<Vec<ModelPreset>> = Lazy::new(|| {
                 },
             ],
             is_default: false,
-            upgrade: Some(ModelUpgrade {
+            upgrade: Some(gpt_52_codex_upgrade()),
-                id: "gpt-5.2-codex".to_string(),
-                reasoning_effort_mapping: None,
-                migration_config_key: "gpt-5.2-codex".to_string(),
-                model_link: Some("https://openai.com/index/introducing-gpt-5-2-codex".to_string()),
-            }),
             show_in_picker: false,
             supported_in_api: true,
         },
@@ -183,12 +163,7 @@ static PRESETS: Lazy<Vec<ModelPreset>> = Lazy::new(|| {
                 },
             ],
             is_default: false,
-            upgrade: Some(ModelUpgrade {
+            upgrade: Some(gpt_52_codex_upgrade()),
-                id: "gpt-5.1-codex-mini".to_string(),
-                reasoning_effort_mapping: None,
-                migration_config_key: HIDE_GPT5_1_MIGRATION_PROMPT_CONFIG.to_string(),
-                model_link: Some("https://www.codex.com/models/caribou".to_string()),
-            }),
             show_in_picker: false,
             supported_in_api: true,
         },
@@ -214,12 +189,7 @@ static PRESETS: Lazy<Vec<ModelPreset>> = Lazy::new(|| {
                 },
             ],
             is_default: false,
-            upgrade: Some(ModelUpgrade {
+            upgrade: Some(gpt_52_codex_upgrade()),
-                id: "caribou".to_string(),
-                reasoning_effort_mapping: None,
-                migration_config_key: "gpt-5.2-codex".to_string(),
-                model_link: Some("https://openai.com/index/introducing-gpt-5-2-codex".to_string()),
-            }),
             show_in_picker: false,
             supported_in_api: true,
         },
@@ -248,12 +218,7 @@ static PRESETS: Lazy<Vec<ModelPreset>> = Lazy::new(|| {
                 },
             ],
             is_default: false,
-            upgrade: Some(ModelUpgrade {
+            upgrade: Some(gpt_52_codex_upgrade()),
-                id: "gpt-5.2-codex".to_string(),
-                reasoning_effort_mapping: None,
-                migration_config_key: "gpt-5.2-codex".to_string(),
-                model_link: Some("https://openai.com/index/introducing-gpt-5-2-codex".to_string()),
-            }),
             show_in_picker: false,
             supported_in_api: true,
         },
@@ -278,18 +243,26 @@ static PRESETS: Lazy<Vec<ModelPreset>> = Lazy::new(|| {
                 },
             ],
             is_default: false,
-            upgrade: Some(ModelUpgrade {
+            upgrade: Some(gpt_52_codex_upgrade()),
-                id: "caribou".to_string(),
-                reasoning_effort_mapping: None,
-                migration_config_key: "caribou".to_string(),
-                model_link: Some("https://www.codex.com/models/caribou".to_string()),
-            }),
             show_in_picker: false,
             supported_in_api: true,
         },
     ]
 });
 
+fn gpt_52_codex_upgrade() -> ModelUpgrade {
+    ModelUpgrade {
+        id: "gpt-5.2-codex".to_string(),
+        reasoning_effort_mapping: None,
+        migration_config_key: "gpt-5.2-codex".to_string(),
+        model_link: Some("https://openai.com/index/introducing-gpt-5-2-codex".to_string()),
+        upgrade_copy: Some(
+            "Codex is now powered by gpt-5.2-codex, our latest frontier agentic coding model. It is smarter and faster than its predecessors and capable of long-running project-scale work."
+                .to_string(),
+        ),
+    }
+}
+
 pub(super) fn builtin_model_presets(_auth_mode: Option<AuthMode>) -> Vec<ModelPreset> {
     PRESETS
         .iter()

codex-rs/core/tests/suite/list_models.rs

@@ -184,6 +184,10 @@ fn gpt52_codex_upgrade() -> codex_protocol::openai_models::ModelUpgrade {
         reasoning_effort_mapping: None,
         migration_config_key: "gpt-5.2-codex".to_string(),
         model_link: Some("https://openai.com/index/introducing-gpt-5-2-codex".to_string()),
+        upgrade_copy: Some(
+            "Codex is now powered by gpt-5.2-codex, our latest frontier agentic coding model. It is smarter and faster than its predecessors and capable of long-running project-scale work."
+                .to_string(),
+        ),
     }
 }
 

codex-rs/protocol/src/openai_models.rs

@@ -53,6 +53,7 @@ pub struct ModelUpgrade {
     pub reasoning_effort_mapping: Option<HashMap<ReasoningEffort, ReasoningEffort>>,
     pub migration_config_key: String,
     pub model_link: Option<String>,
+    pub upgrade_copy: Option<String>,
 }
 
 /// Metadata describing a Codex-supported model.
@@ -219,6 +220,7 @@ impl From<ModelInfo> for ModelPreset {
                 migration_config_key: info.slug.clone(),
                 // todo(aibrahim): add the model link here.
                 model_link: None,
+                upgrade_copy: None,
             }),
             show_in_picker: info.visibility == ModelVisibility::List,
             supported_in_api: info.supported_in_api,

codex-rs/tui/src/app.rs

@@ -195,6 +195,7 @@ async fn handle_model_migration_prompt_if_needed(
         reasoning_effort_mapping,
         migration_config_key,
         model_link,
+        upgrade_copy,
     }) = upgrade
     {
         if migration_prompt_hidden(config, migration_config_key.as_str()) {
@@ -227,6 +228,7 @@ async fn handle_model_migration_prompt_if_needed(
             model,
             &target_model,
             model_link.clone(),
+            upgrade_copy.clone(),
             heading_label,
             target_description,
             can_opt_out,
@@ -1398,6 +1400,7 @@ mod tests {
             reasoning_effort_mapping: None,
             migration_config_key: HIDE_GPT5_1_MIGRATION_PROMPT_CONFIG.to_string(),
             model_link: None,
+            upgrade_copy: None,
         });
         available.retain(|preset| preset.model != "gpt-5-codex");
         available.push(current.clone());

codex-rs/tui/src/model_migration.rs

@@ -59,26 +59,36 @@ pub(crate) fn migration_copy_for_models(
     current_model: &str,
     target_model: &str,
     model_link: Option<String>,
+    migration_copy: Option<String>,
     target_display_name: String,
     target_description: Option<String>,
     can_opt_out: bool,
 ) -> ModelMigrationCopy {
-    let heading_text = Span::from(format!("Try {target_display_name}")).bold();
+    let heading_text = Span::from(format!(
-    let description_line = target_description
+        "Codex just got an upgrade. Introducing {target_display_name}."
-        .filter(|desc| !desc.is_empty())
+    ))
-        .map(Line::from)
+    .bold();
-        .unwrap_or_else(|| {
+    let description_line: Line<'static>;
-            Line::from(format!(
+    if let Some(migration_copy) = &migration_copy {
-                "{target_display_name} is recommended for better performance and reliability."
+        description_line = Line::from(migration_copy.clone());
-            ))
+    } else {
-        });
+        description_line = target_description
+            .filter(|desc| !desc.is_empty())
+            .map(Line::from)
+            .unwrap_or_else(|| {
+                Line::from(format!(
+                    "{target_display_name} is recommended for better performance and reliability."
+                ))
+            });
+    }
 
-    let mut content = vec![
+    let mut content = vec![];
-        Line::from(format!(
+    if migration_copy.is_none() {
+        content.push(Line::from(format!(
             "We recommend switching from {current_model} to {target_model}."
-        )),
+        )));
-        Line::from(""),
+        content.push(Line::from(""));
-    ];
+    }
 
     if let Some(model_link) = model_link {
         content.push(Line::from(vec![
@@ -364,6 +374,10 @@ mod tests {
                 "gpt-5.1-codex-mini",
                 "gpt-5.1-codex-max",
                 None,
+                Some(
+                    "Upgrade to gpt-5.2-codex for the latest and greatest agentic coding model."
+                        .to_string(),
+                ),
                 "gpt-5.1-codex-max".to_string(),
                 Some("Codex-optimized flagship for deep and fast reasoning.".to_string()),
                 true,
@@ -391,6 +405,7 @@ mod tests {
                 "gpt-5",
                 "gpt-5.1",
                 Some("https://www.codex.com/models/gpt-5.1".to_string()),
+                None,
                 "gpt-5.1".to_string(),
                 Some("Broad world knowledge with strong general reasoning.".to_string()),
                 false,
@@ -416,6 +431,7 @@ mod tests {
                 "gpt-5-codex",
                 "gpt-5.1-codex-max",
                 Some("https://www.codex.com/models/gpt-5.1-codex-max".to_string()),
+                None,
                 "gpt-5.1-codex-max".to_string(),
                 Some("Codex-optimized flagship for deep and fast reasoning.".to_string()),
                 false,
@@ -441,6 +457,7 @@ mod tests {
                 "gpt-5-codex-mini",
                 "gpt-5.1-codex-mini",
                 Some("https://www.codex.com/models/gpt-5.1-codex-mini".to_string()),
+                None,
                 "gpt-5.1-codex-mini".to_string(),
                 Some("Optimized for codex. Cheaper, faster, but less capable.".to_string()),
                 false,
@@ -462,6 +479,7 @@ mod tests {
                 "gpt-old",
                 "gpt-new",
                 Some("https://www.codex.com/models/gpt-new".to_string()),
+                None,
                 "gpt-new".to_string(),
                 Some("Latest recommended model for better performance.".to_string()),
                 true,
@@ -489,6 +507,7 @@ mod tests {
                 "gpt-old",
                 "gpt-new",
                 Some("https://www.codex.com/models/gpt-new".to_string()),
+                None,
                 "gpt-new".to_string(),
                 Some("Latest recommended model for better performance.".to_string()),
                 true,

codex-rs/tui/src/selection_list.rs

@@ -11,6 +11,15 @@ pub(crate) fn selection_option_row(
     index: usize,
     label: String,
     is_selected: bool,
+) -> Box<dyn Renderable> {
+    selection_option_row_with_dim(index, label, is_selected, false)
+}
+
+pub(crate) fn selection_option_row_with_dim(
+    index: usize,
+    label: String,
+    is_selected: bool,
+    dim: bool,
 ) -> Box<dyn Renderable> {
     let prefix = if is_selected {
         format!("› {}. ", index + 1)
@@ -19,6 +28,8 @@ pub(crate) fn selection_option_row(
     };
     let style = if is_selected {
         Style::default().cyan()
+    } else if dim {
+        Style::default().dim()
     } else {
         Style::default()
     };

codex-rs/tui/src/snapshots/codex_tui__model_migration__tests__model_migration_prompt.snap

@@ -3,12 +3,10 @@ source: tui/src/model_migration.rs
 expression: terminal.backend()
 ---
 
-> Try gpt-5.1-codex-max
+> Codex just got an upgrade. Introducing gpt-5.1-codex-max.
 
-  We recommend switching from gpt-5.1-codex-mini to
+  Upgrade to gpt-5.2-codex for the latest and greatest
-  gpt-5.1-codex-max.
+  agentic coding model.
-
-  Codex-optimized flagship for deep and fast reasoning.
 
   You can continue using gpt-5.1-codex-mini if you prefer.
 

codex-rs/tui/src/snapshots/codex_tui__model_migration__tests__model_migration_prompt_gpt5_codex.snap

@@ -3,7 +3,7 @@ source: tui/src/model_migration.rs
 expression: terminal.backend()
 ---
 
-> Try gpt-5.1-codex-max
+> Codex just got an upgrade. Introducing gpt-5.1-codex-max.
 
   We recommend switching from gpt-5-codex to
   gpt-5.1-codex-max.

codex-rs/tui/src/snapshots/codex_tui__model_migration__tests__model_migration_prompt_gpt5_codex_mini.snap

@@ -3,7 +3,7 @@ source: tui/src/model_migration.rs
 expression: terminal.backend()
 ---
 
-> Try gpt-5.1-codex-mini
+> Codex just got an upgrade. Introducing gpt-5.1-codex-mini.
 
   We recommend switching from gpt-5-codex-mini to
   gpt-5.1-codex-mini.

codex-rs/tui/src/snapshots/codex_tui__model_migration__tests__model_migration_prompt_gpt5_family.snap

@@ -3,7 +3,7 @@ source: tui/src/model_migration.rs
 expression: terminal.backend()
 ---
 
-> Try gpt-5.1
+> Codex just got an upgrade. Introducing gpt-5.1.
 
   We recommend switching from gpt-5 to gpt-5.1.
 

codex-rs/tui2/src/app.rs

@@ -214,7 +214,7 @@ async fn handle_model_migration_prompt_if_needed(
         id: target_model,
         reasoning_effort_mapping,
         migration_config_key,
-        model_link: _,
+        ..
     }) = upgrade
     {
         if migration_prompt_hidden(config, migration_config_key.as_str()) {