diff --git a/src-tauri/src/codex_catalog.rs b/src-tauri/src/codex_catalog.rs
index e0553dc..4b1829e 100644
--- a/src-tauri/src/codex_catalog.rs
+++ b/src-tauri/src/codex_catalog.rs
@@ -1,11 +1,11 @@
 use crate::AgentModelOption;
 use serde_json::{Map, Value};
 use std::collections::{HashMap, HashSet};
-use std::sync::OnceLock;
+use std::sync::{OnceLock, RwLock};
 
 const MODEL_CATALOG_JSON: &str = include_str!("../resources/codex_models/model-catalog.json");
 
-static SOURCES: OnceLock<Result<CatalogSources, String>> = OnceLock::new();
+static CATALOG_STATE: OnceLock<Result<RwLock<CatalogState>, String>> = OnceLock::new();
 
 #[derive(Clone, Debug, PartialEq, Eq)]
 pub(crate) struct CodexRuntimeModel {
@@ -33,6 +33,12 @@ struct CatalogSources {
     max_template_priority: i64,
 }
 
+#[derive(Clone, Debug)]
+struct CatalogState {
+    sources: CatalogSources,
+    json: String,
+}
+
 #[derive(Clone, Debug)]
 struct Template {
     value: Map<String, Value>,
@@ -46,7 +52,31 @@ struct CatalogEntry {
 }
 
 pub(crate) fn validate_embedded_catalog() -> Result<(), String> {
-    sources().map(|_| ())
+    catalog_state().map(|_| ())
+}
+
+pub(crate) fn activate_catalog_json(catalog_json: &str) -> Result<bool, String> {
+    let parsed = parse_sources(catalog_json)?;
+    let mut state = catalog_state()?
+        .write()
+        .map_err(|_| "Codex 模型目录内存锁已损坏".to_string())?;
+    if state.json == catalog_json {
+        return Ok(false);
+    }
+    state.sources = parsed;
+    state.json = catalog_json.to_string();
+    Ok(true)
+}
+
+pub(crate) fn validate_catalog_json(catalog_json: &str) -> Result<(), String> {
+    parse_sources(catalog_json).map(|_| ())
+}
+
+pub(crate) fn current_catalog_json() -> Result<String, String> {
+    let state = catalog_state()?
+        .read()
+        .map_err(|_| "Codex 模型目录内存锁已损坏".to_string())?;
+    Ok(state.json.clone())
 }
 
 pub(crate) fn parse_runtime_models(payload: &Value) -> Result<Vec<CodexRuntimeModel>, String> {
@@ -113,12 +143,22 @@ pub(crate) fn parse_runtime_models(payload: &Value) -> Result<Vec<CodexRuntimeMo
 pub(crate) fn prepare_catalog(
     runtime_models: &[CodexRuntimeModel],
 ) -> Result<PreparedCodexCatalog, String> {
-    prepare_catalog_with_sources(runtime_models, sources()?)
+    let state = catalog_state()?
+        .read()
+        .map_err(|_| "Codex 模型目录内存锁已损坏".to_string())?;
+    prepare_catalog_with_sources(runtime_models, &state.sources)
 }
 
-fn sources() -> Result<&'static CatalogSources, String> {
-    SOURCES
-        .get_or_init(|| parse_sources(MODEL_CATALOG_JSON))
+fn catalog_state() -> Result<&'static RwLock<CatalogState>, String> {
+    CATALOG_STATE
+        .get_or_init(|| {
+            parse_sources(MODEL_CATALOG_JSON).map(|sources| {
+                RwLock::new(CatalogState {
+                    sources,
+                    json: MODEL_CATALOG_JSON.to_string(),
+                })
+            })
+        })
         .as_ref()
         .map_err(Clone::clone)
 }
@@ -686,7 +726,8 @@ mod tests {
     #[test]
     fn embedded_catalog_is_valid() {
         validate_embedded_catalog().unwrap();
-        let sources = sources().unwrap();
+        let state = catalog_state().unwrap().read().unwrap();
+        let sources = &state.sources;
         assert_eq!(sources.templates.len(), 10);
         let fallback_prompt = string_value(&sources.fallback, "base_instructions");
         assert!(fallback_prompt.starts_with(
diff --git a/src-tauri/src/main.rs b/src-tauri/src/main.rs
index effde4b..b8ae6ff 100644
--- a/src-tauri/src/main.rs
+++ b/src-tauri/src/main.rs
@@ -51,6 +51,10 @@ const RELEASE_DOWNLOAD_PREFIX: &str =
 const APP_UPDATE_MANIFEST_URL: &str = "https://github.com/router-for-me/EasyCLIProxyAPI/releases/latest/download/portable-update-windows.json";
 const APP_RELEASE_DOWNLOAD_PREFIX: &str =
     "https://github.com/router-for-me/EasyCLIProxyAPI/releases/download/";
+const CODEX_MODEL_CATALOG_URL: &str = "https://raw.githubusercontent.com/router-for-me/EasyCLIProxyAPI/main/src-tauri/resources/codex_models/model-catalog.json";
+const CODEX_MODEL_CATALOG_OVERRIDE_DIR: &str = "codex_models";
+const CODEX_MODEL_CATALOG_SOURCE_FILE: &str = "model-catalog.json";
+const MAX_CODEX_MODEL_CATALOG_BYTES: usize = 4 * 1024 * 1024;
 const APP_UPDATE_PROGRESS_EVENT: &str = "app-update-progress";
 const PORTABLE_APP_MANIFEST_FILE: &str = "portable-app.json";
 #[cfg(windows)]
@@ -610,6 +614,12 @@ struct AgentConfigActionResult {
     conflict_files: Vec<String>,
 }
 
+#[derive(Clone, Debug, Serialize)]
+#[serde(rename_all = "camelCase")]
+struct CodexModelCatalogUpdateResult {
+    outcome: String,
+}
+
 #[derive(Clone, Debug, Deserialize, PartialEq, Eq, Serialize)]
 #[serde(rename_all = "camelCase")]
 struct AgentModelOption {
@@ -1597,6 +1607,100 @@ async fn get_agent_models(
     Ok(fetch_prepared_agent_models(client, &config).await?.models)
 }
 
+#[tauri::command]
+async fn update_codex_model_catalog(
+    app: tauri::AppHandle,
+) -> Result<CodexModelCatalogUpdateResult, String> {
+    update_codex_model_catalog_inner(&app).await
+}
+
+async fn update_codex_model_catalog_inner(
+    app: &tauri::AppHandle,
+) -> Result<CodexModelCatalogUpdateResult, String> {
+    let client = reqwest::Client::builder()
+        .redirect(github_https_redirect_policy())
+        .connect_timeout(Duration::from_secs(8))
+        .read_timeout(Duration::from_secs(15))
+        .timeout(Duration::from_secs(25))
+        .build()
+        .map_err(|error| format!("创建 Codex 模型目录更新客户端失败: {error}"))?;
+    let response = client
+        .get(CODEX_MODEL_CATALOG_URL)
+        .header(reqwest::header::ACCEPT, "application/json")
+        .header(reqwest::header::USER_AGENT, APP_USER_AGENT)
+        .send()
+        .await
+        .map_err(|error| format!("从 GitHub 读取 Codex 模型目录失败: {error}"))?;
+    let status = response.status();
+    if !status.is_success() {
+        return Err(format!(
+            "从 GitHub 读取 Codex 模型目录失败: HTTP {}",
+            status.as_u16()
+        ));
+    }
+    if response
+        .content_length()
+        .is_some_and(|size| size > MAX_CODEX_MODEL_CATALOG_BYTES as u64)
+    {
+        return Err(format!(
+            "GitHub Codex 模型目录超过 {} MiB 限制",
+            MAX_CODEX_MODEL_CATALOG_BYTES / 1024 / 1024
+        ));
+    }
+
+    let mut bytes = Vec::new();
+    let mut stream = response.bytes_stream();
+    while let Some(chunk) = stream.next().await {
+        let chunk = chunk.map_err(|error| format!("读取 GitHub Codex 模型目录失败: {error}"))?;
+        if bytes.len().saturating_add(chunk.len()) > MAX_CODEX_MODEL_CATALOG_BYTES {
+            return Err(format!(
+                "GitHub Codex 模型目录超过 {} MiB 限制",
+                MAX_CODEX_MODEL_CATALOG_BYTES / 1024 / 1024
+            ));
+        }
+        bytes.extend_from_slice(&chunk);
+    }
+    let catalog_json = String::from_utf8(bytes)
+        .map_err(|_| "GitHub Codex 模型目录不是有效的 UTF-8 文件".to_string())?;
+    codex_catalog::validate_catalog_json(&catalog_json)
+        .map_err(|error| format!("GitHub Codex 模型目录校验失败: {error}"))?;
+
+    if codex_catalog::current_catalog_json()? == catalog_json {
+        return Ok(CodexModelCatalogUpdateResult {
+            outcome: "unchanged".to_string(),
+        });
+    }
+
+    let path = codex_model_catalog_override_path(app)?;
+    write_bytes_atomically(&path, catalog_json.as_bytes())?;
+    let changed = codex_catalog::activate_catalog_json(&catalog_json)?;
+    Ok(CodexModelCatalogUpdateResult {
+        outcome: if changed { "updated" } else { "unchanged" }.to_string(),
+    })
+}
+
+fn codex_model_catalog_override_path(app: &tauri::AppHandle) -> Result<PathBuf, String> {
+    let app_data = app
+        .path()
+        .app_data_dir()
+        .map_err(|error| format!("无法获取应用数据目录: {error}"))?;
+    Ok(app_data
+        .join(CODEX_MODEL_CATALOG_OVERRIDE_DIR)
+        .join(CODEX_MODEL_CATALOG_SOURCE_FILE))
+}
+
+fn load_codex_model_catalog_override(app: &tauri::AppHandle) -> Result<(), String> {
+    let path = codex_model_catalog_override_path(app)?;
+    if !path.is_file() {
+        return Ok(());
+    }
+    let catalog_json = fs::read_to_string(&path)
+        .map_err(|error| format!("读取本地 Codex 模型目录更新文件失败: {error}"))?;
+    codex_catalog::activate_catalog_json(&catalog_json)
+        .map_err(|error| format!("本地 Codex 模型目录更新文件无效: {error}"))?;
+    Ok(())
+}
+
 #[tauri::command]
 async fn get_thinking_aliases(
     gui_config_state: tauri::State<'_, GuiConfigState>,
@@ -6671,6 +6775,7 @@ fn github_https_redirect_policy() -> reqwest::redirect::Policy {
             url.host_str(),
             Some(
                 "github.com"
+                    | "raw.githubusercontent.com"
                     | "objects.githubusercontent.com"
                     | "release-assets.githubusercontent.com"
             )
@@ -13272,6 +13377,15 @@ fn main() {
             if let Err(error) = codex_catalog::validate_embedded_catalog() {
                 eprintln!("Codex 内置模型目录无效: {error}");
             }
+            if let Err(error) = load_codex_model_catalog_override(app.handle()) {
+                eprintln!("加载 Codex 模型目录更新文件失败，将使用内置目录: {error}");
+            }
+            let catalog_update_app = app.handle().clone();
+            tauri::async_runtime::spawn(async move {
+                if let Err(error) = update_codex_model_catalog_inner(&catalog_update_app).await {
+                    eprintln!("后台更新 Codex 模型目录失败，继续使用当前目录: {error}");
+                }
+            });
             if let Err(error) = restore_main_window_size(app.handle()) {
                 eprintln!("{error}");
             }
@@ -13352,6 +13466,7 @@ fn main() {
             get_agent_config_statuses,
             refresh_agent_config_statuses,
             get_agent_models,
+            update_codex_model_catalog,
             get_thinking_aliases,
             get_thinking_alias_sources,
             create_thinking_alias,
diff --git a/src/i18n/ja.ts b/src/i18n/ja.ts
index 8ebb1f7..4ab35f8 100644
--- a/src/i18n/ja.ts
+++ b/src/i18n/ja.ts
@@ -409,6 +409,10 @@ export const jaOverrides = {
   'agents.model.search': 'モデル名またはエイリアスを検索',
   'agents.model.clearSearch': '検索を消去',
   'agents.model.refresh': 'モデルを更新',
+  'agents.catalog.update': 'モデル設定情報を更新',
+  'agents.catalog.updating': 'モデル設定を更新しています',
+  'agents.catalog.updated': 'GitHub からモデル設定を更新しました',
+  'agents.catalog.unchanged': 'モデル設定は最新です',
   'agents.model.fetching': 'モデルを取得しています',
   'agents.model.noMatch': '一致するモデルがありません',
   'agents.model.unavailable': '現在利用可能なモデルはありません',
diff --git a/src/i18n/resources.ts b/src/i18n/resources.ts
index 8195044..66cd347 100644
--- a/src/i18n/resources.ts
+++ b/src/i18n/resources.ts
@@ -412,6 +412,10 @@ export const zhCN = {
   'agents.model.search': '搜索模型名称或别名',
   'agents.model.clearSearch': '清空搜索',
   'agents.model.refresh': '刷新模型',
+  'agents.catalog.update': '更新模型配置信息',
+  'agents.catalog.updating': '正在更新模型配置',
+  'agents.catalog.updated': '模型配置已从 GitHub 更新',
+  'agents.catalog.unchanged': '模型配置已是最新版本',
   'agents.model.fetching': '正在获取模型',
   'agents.model.noMatch': '没有匹配的模型',
   'agents.model.unavailable': '暂时没有可用模型',
@@ -1256,6 +1260,10 @@ export const en: Record<MessageKey, string> = {
   'agents.model.search': 'Search model names or aliases',
   'agents.model.clearSearch': 'Clear search',
   'agents.model.refresh': 'Refresh models',
+  'agents.catalog.update': 'Update model configuration',
+  'agents.catalog.updating': 'Updating model configuration',
+  'agents.catalog.updated': 'Model configuration updated from GitHub',
+  'agents.catalog.unchanged': 'Model configuration is already up to date',
   'agents.model.fetching': 'Fetching models',
   'agents.model.noMatch': 'No matching models',
   'agents.model.unavailable': 'No models are currently available',
diff --git a/src/pages/AgentsPage.tsx b/src/pages/AgentsPage.tsx
index 7c92ba9..5f22d60 100644
--- a/src/pages/AgentsPage.tsx
+++ b/src/pages/AgentsPage.tsx
@@ -85,6 +85,10 @@ type AgentConfigActionResult = {
   conflictFiles: string[];
 };
 
+type CodexModelCatalogUpdateResult = {
+  outcome: 'updated' | 'unchanged';
+};
+
 type ChatGptCloseResult = {
   wasRunning: boolean;
   closedProcesses: number;
@@ -484,11 +488,13 @@ export function AgentsPage() {
   const [launchTargetByClient, setLaunchTargetByClient] = useState<Partial<Record<AgentClientId, string>>>({});
   const [loading, setLoading] = useState(true);
   const [modelLoading, setModelLoading] = useState(false);
-  const [busyAction, setBusyAction] = useState<'apply' | 'default' | 'clear' | 'launch' | 'close-app' | null>(null);
+  const [busyAction, setBusyAction] = useState<'apply' | 'default' | 'clear' | 'launch' | 'close-app' | 'catalog' | null>(null);
   const busy = busyAction !== null;
   const [detectionError, setDetectionError] = useState('');
   const [modelError, setModelError] = useState('');
   const [modelSelectionError, setModelSelectionError] = useState('');
+  const [catalogUpdateError, setCatalogUpdateError] = useState('');
+  const [catalogUpdateNotice, setCatalogUpdateNotice] = useState('');
   const [configurationError, setConfigurationError] = useState('');
   const [launchError, setLaunchError] = useState('');
   const [defaultError, setDefaultError] = useState('');
@@ -586,6 +592,8 @@ export function AgentsPage() {
   useEffect(() => {
     setActiveSubpage(DEFAULT_AGENT_SUBPAGE);
     setModelSelectionError('');
+    setCatalogUpdateError('');
+    setCatalogUpdateNotice('');
     setConfigurationError('');
     setLaunchError('');
     setDefaultError('');
@@ -680,6 +688,23 @@ export function AgentsPage() {
     void loadModels(selected);
   };
 
+  const updateCodexModelCatalog = async () => {
+    setCatalogUpdateError('');
+    setCatalogUpdateNotice('');
+    setBusyAction('catalog');
+    try {
+      const result = await invoke<CodexModelCatalogUpdateResult>('update_codex_model_catalog');
+      setCatalogUpdateNotice(result.outcome === 'updated'
+        ? t('agents.catalog.updated')
+        : t('agents.catalog.unchanged'));
+      await loadModels('codex');
+    } catch (requestError) {
+      setCatalogUpdateError(String(requestError));
+    } finally {
+      setBusyAction(null);
+    }
+  };
+
   const reloadStatusesAfterAction = async () => {
     setDetectionError('');
     try {
@@ -964,6 +989,31 @@ export function AgentsPage() {
                     {modelHint}
                   </span>
                 ) : null}
+                {selected === 'codex' ? (
+                  <div className="agent-catalog-update-control">
+                    <button
+                      type="button"
+                      className="secondary-button compact-button"
+                      onClick={() => void updateCodexModelCatalog()}
+                      disabled={busy}
+                    >
+                      <RefreshCw size={15} className={busyAction === 'catalog' ? 'spin' : ''} />
+                      {busyAction === 'catalog'
+                        ? t('agents.catalog.updating')
+                        : t('agents.catalog.update')}
+                    </button>
+                    {catalogUpdateError ? (
+                      <span className="agent-inline-message error" role="alert" aria-live="polite">
+                        {catalogUpdateError}
+                      </span>
+                    ) : null}
+                    {catalogUpdateNotice ? (
+                      <span className="agent-inline-message" role="status" aria-live="polite">
+                        {catalogUpdateNotice}
+                      </span>
+                    ) : null}
+                  </div>
+                ) : null}
               </section>
 
               <section className={`agent-core-setting-section agent-modification-actions ${activeStatus?.modificationState === 'applied' ? 'enabled' : ''}`}>
diff --git a/src/styles.css b/src/styles.css
index f0242cc..0bac950 100644
--- a/src/styles.css
+++ b/src/styles.css
@@ -4934,6 +4934,18 @@ input:focus-visible {
   overflow-wrap: anywhere;
 }
 
+.agent-catalog-update-control {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  min-width: 0;
+}
+
+.agent-catalog-update-control .agent-inline-message {
+  min-width: 0;
+  overflow-wrap: anywhere;
+}
+
 .agent-pending-badge {
   flex: none;
   padding: 4px 8px;
@@ -7164,6 +7176,11 @@ input:focus-visible {
     flex-direction: column;
   }
 
+  .agent-catalog-update-control {
+    align-items: stretch;
+    flex-direction: column;
+  }
+
   .codex-auto-restore-toggle {
     width: 100%;
     min-width: 0;