feat: gpt-5 暂时不可用，因为必须上传身份证。所以退回到 gpt-4o

Author: xcatliu

app/context/ChatContext.tsx

@@ -64,7 +64,7 @@ export const ChatProvider: FC<{ children: ReactNode }> = ({ children }) => {
     let settings = getCache<SettingsState>('settings');
     // 如果检测到缓存中有上次还未存储到 cache 的 message，则加入到 history 中
     if (messages && messages.length > 0) {
-      history = [{ model: settings?.model ?? Model['gpt-5'], messages }, ...(history ?? [])];
+      history = [{ model: settings?.model ?? Model['gpt-4o'], messages }, ...(history ?? [])];
       setHistory(history);
       setCache('history', history);
       setMessages([]);
@@ -229,7 +229,7 @@ export const ChatProvider: FC<{ children: ReactNode }> = ({ children }) => {
         return;
       }
 
-      const newModel = history?.[index].model ?? Model['gpt-5'];
+      const newModel = history?.[index].model ?? Model['gpt-4o'];
 
       if (historyIndex === 'empty') {
         setHistoryIndex(index);
@@ -284,7 +284,7 @@ export const ChatProvider: FC<{ children: ReactNode }> = ({ children }) => {
         const newIndex = history && history.length > 0 ? 0 : 'empty';
         setHistoryIndex(newIndex);
         if (typeof newIndex === 'number') {
-          const newModel = history?.[newIndex].model ?? Model['gpt-5'];
+          const newModel = history?.[newIndex].model ?? Model['gpt-4o'];
           setSettings({
             model: newModel,
           });
@@ -303,7 +303,7 @@ export const ChatProvider: FC<{ children: ReactNode }> = ({ children }) => {
         const newIndex = newHistory && newHistory.length > 0 ? Math.min(deleteIndex, newHistory.length - 1) : 'empty';
         setHistoryIndex(newIndex);
         if (typeof newIndex === 'number') {
-          const newModel = newHistory[newIndex].model ?? Model['gpt-5'];
+          const newModel = newHistory[newIndex].model ?? Model['gpt-4o'];
           setSettings({
             model: newModel,
           });

app/context/SettingsContext.tsx

@@ -17,10 +17,10 @@ export interface SettingsState extends Omit<ChatRequest, 'messages'> {
 }
 
 const INITIAL_SETTINGS: SettingsState = {
-  newChatModel: Model['gpt-5'],
-  model: Model['gpt-5'],
+  newChatModel: Model['gpt-4o'],
+  model: Model['gpt-4o'],
   maxHistoryLength: 6,
-  availableModels: [Model['gpt-5']],
+  availableModels: [Model['gpt-4o']],
 };
 
 enum SettingsActionType {

app/utils/constants.ts

@@ -38,15 +38,29 @@ export enum Role {
  * ChatGPT 模型
  */
 export enum Model {
+  'gpt-4o' = 'gpt-4o',
+  'gpt-4o-mini' = 'gpt-4o-mini',
   'gpt-5' = 'gpt-5',
   'gpt-5-mini' = 'gpt-5-mini',
   'gpt-5-nano' = 'gpt-5-nano',
 }
 
-export const AllModels = [Model['gpt-5'], Model['gpt-5-mini'], Model['gpt-5-nano']];
+export const AllModels = [
+  Model['gpt-4o'],
+  Model['gpt-4o-mini'],
+  Model['gpt-5'],
+  Model['gpt-5-mini'],
+  Model['gpt-5-nano'],
+];
 
 /** 支持发送图片的模型 */
-export const VisionModels = [Model['gpt-5'], Model['gpt-5-mini'], Model['gpt-5-nano']];
+export const VisionModels = [
+  Model['gpt-4o'],
+  Model['gpt-4o-mini'],
+  Model['gpt-5'],
+  Model['gpt-5-mini'],
+  Model['gpt-5-nano'],
+];
 
 export enum MessageContentType {
   text = 'text',
@@ -153,6 +167,10 @@ export interface ChatRequest {
    * 结束语，最多设置四个，如果 ChatGPT 的回复中包含某个结束语，则停止生成
    */
   stop?: string | string[];
+  /**
+   * tokens 限制
+   */
+  max_tokens?: number;
   /**
    * 存在惩罚，取值范围 -2.0 到 2.0
    *
@@ -286,7 +304,7 @@ export const exampleModelsResponse: ModelsResponse = {
   data: [
     {
       created: 1677610602,
-      id: Model['gpt-5'],
+      id: Model['gpt-4o'],
       object: 'model',
       owned_by: 'openai',
       parent: null,
@@ -306,7 +324,7 @@ export const exampleModelsResponse: ModelsResponse = {
           organization: '*',
         },
       },
-      root: Model['gpt-5'],
+      root: Model['gpt-4o'],
     },
   ],
   object: 'list',