diff --git a/app/client/platforms/alibaba.ts b/app/client/platforms/alibaba.ts
index 4ade9ebb9..727e3aebf 100644
--- a/app/client/platforms/alibaba.ts
+++ b/app/client/platforms/alibaba.ts
@@ -23,6 +23,7 @@ import {
 import { prettyObject } from "@/app/utils/format";
 import { getClientConfig } from "@/app/config/client";
 import { getMessageTextContent } from "@/app/utils";
+import { fetch } from "@/app/utils/stream";
 
 export interface OpenAIListModelResponse {
   object: string;
@@ -178,6 +179,7 @@ export class QwenApi implements LLMApi {
         controller.signal.onabort = finish;
 
         fetchEventSource(chatPath, {
+          fetch,
           ...chatPayload,
           async onopen(res) {
             clearTimeout(requestTimeoutId);
diff --git a/app/client/platforms/anthropic.ts b/app/client/platforms/anthropic.ts
index 7826838a6..1a83bd53a 100644
--- a/app/client/platforms/anthropic.ts
+++ b/app/client/platforms/anthropic.ts
@@ -8,7 +8,7 @@ import {
   ChatMessageTool,
 } from "@/app/store";
 import { getClientConfig } from "@/app/config/client";
-import { DEFAULT_API_HOST } from "@/app/constant";
+import { ANTHROPIC_BASE_URL } from "@/app/constant";
 import { getMessageTextContent, isVisionModel } from "@/app/utils";
 import { preProcessImageContent, stream } from "@/app/utils/chat";
 import { cloudflareAIGatewayUrl } from "@/app/utils/cloudflare";
@@ -388,9 +388,7 @@ export class ClaudeApi implements LLMApi {
     if (baseUrl.trim().length === 0) {
       const isApp = !!getClientConfig()?.isApp;
 
-      baseUrl = isApp
-        ? DEFAULT_API_HOST + "/api/proxy/anthropic"
-        : ApiPath.Anthropic;
+      baseUrl = isApp ? ANTHROPIC_BASE_URL : ApiPath.Anthropic;
     }
 
     if (!baseUrl.startsWith("http") && !baseUrl.startsWith("/api")) {
diff --git a/app/client/platforms/baidu.ts b/app/client/platforms/baidu.ts
index c360417c6..4f3294d5e 100644
--- a/app/client/platforms/baidu.ts
+++ b/app/client/platforms/baidu.ts
@@ -24,6 +24,7 @@ import {
 import { prettyObject } from "@/app/utils/format";
 import { getClientConfig } from "@/app/config/client";
 import { getMessageTextContent } from "@/app/utils";
+import { fetch } from "@/app/utils/stream";
 
 export interface OpenAIListModelResponse {
   object: string;
@@ -197,6 +198,7 @@ export class ErnieApi implements LLMApi {
         controller.signal.onabort = finish;
 
         fetchEventSource(chatPath, {
+          fetch,
           ...chatPayload,
           async onopen(res) {
             clearTimeout(requestTimeoutId);
diff --git a/app/client/platforms/bytedance.ts b/app/client/platforms/bytedance.ts
index a6e2d426e..279be815f 100644
--- a/app/client/platforms/bytedance.ts
+++ b/app/client/platforms/bytedance.ts
@@ -23,6 +23,7 @@ import {
 import { prettyObject } from "@/app/utils/format";
 import { getClientConfig } from "@/app/config/client";
 import { getMessageTextContent } from "@/app/utils";
+import { fetch } from "@/app/utils/stream";
 
 export interface OpenAIListModelResponse {
   object: string;
@@ -165,6 +166,7 @@ export class DoubaoApi implements LLMApi {
         controller.signal.onabort = finish;
 
         fetchEventSource(chatPath, {
+          fetch,
           ...chatPayload,
           async onopen(res) {
             clearTimeout(requestTimeoutId);
diff --git a/app/client/platforms/google.ts b/app/client/platforms/google.ts
index 3c2607271..7a74dd4f3 100644
--- a/app/client/platforms/google.ts
+++ b/app/client/platforms/google.ts
@@ -9,7 +9,7 @@ import {
 } from "../api";
 import { useAccessStore, useAppConfig, useChatStore } from "@/app/store";
 import { getClientConfig } from "@/app/config/client";
-import { DEFAULT_API_HOST } from "@/app/constant";
+import { GEMINI_BASE_URL } from "@/app/constant";
 import Locale from "../../locales";
 import {
   EventStreamContentType,
@@ -22,6 +22,7 @@ import {
   isVisionModel,
 } from "@/app/utils";
 import { preProcessImageContent } from "@/app/utils/chat";
+import { fetch } from "@/app/utils/stream";
 
 export class GeminiProApi implements LLMApi {
   path(path: string): string {
@@ -34,7 +35,7 @@ export class GeminiProApi implements LLMApi {
 
     const isApp = !!getClientConfig()?.isApp;
     if (baseUrl.length === 0) {
-      baseUrl = isApp ? DEFAULT_API_HOST + `/api/proxy/google` : ApiPath.Google;
+      baseUrl = isApp ? GEMINI_BASE_URL : ApiPath.Google;
     }
     if (baseUrl.endsWith("/")) {
       baseUrl = baseUrl.slice(0, baseUrl.length - 1);
@@ -213,6 +214,7 @@ export class GeminiProApi implements LLMApi {
         controller.signal.onabort = finish;
 
         fetchEventSource(chatPath, {
+          fetch,
           ...chatPayload,
           async onopen(res) {
             clearTimeout(requestTimeoutId);
diff --git a/app/client/platforms/iflytek.ts b/app/client/platforms/iflytek.ts
index 3931672e6..07bfeda58 100644
--- a/app/client/platforms/iflytek.ts
+++ b/app/client/platforms/iflytek.ts
@@ -1,7 +1,7 @@
 "use client";
 import {
   ApiPath,
-  DEFAULT_API_HOST,
+  IFLYTEK_BASE_URL,
   Iflytek,
   REQUEST_TIMEOUT_MS,
 } from "@/app/constant";
@@ -22,6 +22,7 @@ import {
 import { prettyObject } from "@/app/utils/format";
 import { getClientConfig } from "@/app/config/client";
 import { getMessageTextContent } from "@/app/utils";
+import { fetch } from "@/app/utils/stream";
 
 import { RequestPayload } from "./openai";
 
@@ -40,7 +41,7 @@ export class SparkApi implements LLMApi {
     if (baseUrl.length === 0) {
       const isApp = !!getClientConfig()?.isApp;
       const apiPath = ApiPath.Iflytek;
-      baseUrl = isApp ? DEFAULT_API_HOST + "/proxy" + apiPath : apiPath;
+      baseUrl = isApp ? IFLYTEK_BASE_URL + apiPath : apiPath;
     }
 
     if (baseUrl.endsWith("/")) {
@@ -149,6 +150,7 @@ export class SparkApi implements LLMApi {
         controller.signal.onabort = finish;
 
         fetchEventSource(chatPath, {
+          fetch,
           ...chatPayload,
           async onopen(res) {
             clearTimeout(requestTimeoutId);
diff --git a/app/client/platforms/moonshot.ts b/app/client/platforms/moonshot.ts
index 6b1979745..4570dca97 100644
--- a/app/client/platforms/moonshot.ts
+++ b/app/client/platforms/moonshot.ts
@@ -2,7 +2,7 @@
 // azure and openai, using same models. so using same LLMApi.
 import {
   ApiPath,
-  DEFAULT_API_HOST,
+  MOONSHOT_BASE_URL,
   Moonshot,
   REQUEST_TIMEOUT_MS,
 } from "@/app/constant";
@@ -40,7 +40,7 @@ export class MoonshotApi implements LLMApi {
     if (baseUrl.length === 0) {
       const isApp = !!getClientConfig()?.isApp;
       const apiPath = ApiPath.Moonshot;
-      baseUrl = isApp ? DEFAULT_API_HOST + "/proxy" + apiPath : apiPath;
+      baseUrl = isApp ? MOONSHOT_BASE_URL + apiPath : apiPath;
     }
 
     if (baseUrl.endsWith("/")) {
diff --git a/app/client/platforms/openai.ts b/app/client/platforms/openai.ts
index 0a8d6203a..0b2d91c99 100644
--- a/app/client/platforms/openai.ts
+++ b/app/client/platforms/openai.ts
@@ -2,7 +2,7 @@
 // azure and openai, using same models. so using same LLMApi.
 import {
   ApiPath,
-  DEFAULT_API_HOST,
+  OPENAI_BASE_URL,
   DEFAULT_MODELS,
   OpenaiPath,
   Azure,
@@ -98,7 +98,7 @@ export class ChatGPTApi implements LLMApi {
     if (baseUrl.length === 0) {
       const isApp = !!getClientConfig()?.isApp;
       const apiPath = isAzure ? ApiPath.Azure : ApiPath.OpenAI;
-      baseUrl = isApp ? DEFAULT_API_HOST + "/proxy" + apiPath : apiPath;
+      baseUrl = isApp ? OPENAI_BASE_URL + apiPath : apiPath;
     }
 
     if (baseUrl.endsWith("/")) {
diff --git a/app/client/platforms/tencent.ts b/app/client/platforms/tencent.ts
index 3e8f1a459..28f5b56f2 100644
--- a/app/client/platforms/tencent.ts
+++ b/app/client/platforms/tencent.ts
@@ -1,5 +1,5 @@
 "use client";
-import { ApiPath, DEFAULT_API_HOST, REQUEST_TIMEOUT_MS } from "@/app/constant";
+import { ApiPath, TENCENT_BASE_URL, REQUEST_TIMEOUT_MS } from "@/app/constant";
 import { useAccessStore, useAppConfig, useChatStore } from "@/app/store";
 
 import {
@@ -22,6 +22,7 @@ import mapKeys from "lodash-es/mapKeys";
 import mapValues from "lodash-es/mapValues";
 import isArray from "lodash-es/isArray";
 import isObject from "lodash-es/isObject";
+import { fetch } from "@/app/utils/stream";
 
 export interface OpenAIListModelResponse {
   object: string;
@@ -70,9 +71,7 @@ export class HunyuanApi implements LLMApi {
 
     if (baseUrl.length === 0) {
       const isApp = !!getClientConfig()?.isApp;
-      baseUrl = isApp
-        ? DEFAULT_API_HOST + "/api/proxy/tencent"
-        : ApiPath.Tencent;
+      baseUrl = isApp ? TENCENT_BASE_URL : ApiPath.Tencent;
     }
 
     if (baseUrl.endsWith("/")) {
@@ -179,6 +178,7 @@ export class HunyuanApi implements LLMApi {
         controller.signal.onabort = finish;
 
         fetchEventSource(chatPath, {
+          fetch,
           ...chatPayload,
           async onopen(res) {
             clearTimeout(requestTimeoutId);
diff --git a/app/constant.ts b/app/constant.ts
index a54a973da..a06b8f050 100644
--- a/app/constant.ts
+++ b/app/constant.ts
@@ -11,7 +11,6 @@ export const RUNTIME_CONFIG_DOM = "danger-runtime-config";
 
 export const STABILITY_BASE_URL = "https://api.stability.ai";
 
-export const DEFAULT_API_HOST = "https://api.nextchat.dev";
 export const OPENAI_BASE_URL = "https://api.openai.com";
 export const ANTHROPIC_BASE_URL = "https://api.anthropic.com";
 
diff --git a/app/store/access.ts b/app/store/access.ts
index 9fcd227e7..74050733c 100644
--- a/app/store/access.ts
+++ b/app/store/access.ts
@@ -1,9 +1,17 @@
 import {
-  ApiPath,
-  DEFAULT_API_HOST,
   GoogleSafetySettingsThreshold,
   ServiceProvider,
   StoreKey,
+  OPENAI_BASE_URL,
+  ANTHROPIC_BASE_URL,
+  GEMINI_BASE_URL,
+  BAIDU_BASE_URL,
+  BYTEDANCE_BASE_URL,
+  ALIBABA_BASE_URL,
+  TENCENT_BASE_URL,
+  MOONSHOT_BASE_URL,
+  STABILITY_BASE_URL,
+  IFLYTEK_BASE_URL,
 } from "../constant";
 import { getHeaders } from "../client/api";
 import { getClientConfig } from "../config/client";
@@ -15,46 +23,6 @@ let fetchState = 0; // 0 not fetch, 1 fetching, 2 done
 
 const isApp = getClientConfig()?.buildMode === "export";
 
-const DEFAULT_OPENAI_URL = isApp
-  ? DEFAULT_API_HOST + "/api/proxy/openai"
-  : ApiPath.OpenAI;
-
-const DEFAULT_GOOGLE_URL = isApp
-  ? DEFAULT_API_HOST + "/api/proxy/google"
-  : ApiPath.Google;
-
-const DEFAULT_ANTHROPIC_URL = isApp
-  ? DEFAULT_API_HOST + "/api/proxy/anthropic"
-  : ApiPath.Anthropic;
-
-const DEFAULT_BAIDU_URL = isApp
-  ? DEFAULT_API_HOST + "/api/proxy/baidu"
-  : ApiPath.Baidu;
-
-const DEFAULT_BYTEDANCE_URL = isApp
-  ? DEFAULT_API_HOST + "/api/proxy/bytedance"
-  : ApiPath.ByteDance;
-
-const DEFAULT_ALIBABA_URL = isApp
-  ? DEFAULT_API_HOST + "/api/proxy/alibaba"
-  : ApiPath.Alibaba;
-
-const DEFAULT_TENCENT_URL = isApp
-  ? DEFAULT_API_HOST + "/api/proxy/tencent"
-  : ApiPath.Tencent;
-
-const DEFAULT_MOONSHOT_URL = isApp
-  ? DEFAULT_API_HOST + "/api/proxy/moonshot"
-  : ApiPath.Moonshot;
-
-const DEFAULT_STABILITY_URL = isApp
-  ? DEFAULT_API_HOST + "/api/proxy/stability"
-  : ApiPath.Stability;
-
-const DEFAULT_IFLYTEK_URL = isApp
-  ? DEFAULT_API_HOST + "/api/proxy/iflytek"
-  : ApiPath.Iflytek;
-
 const DEFAULT_ACCESS_STATE = {
   accessCode: "",
   useCustomConfig: false,
@@ -62,7 +30,7 @@ const DEFAULT_ACCESS_STATE = {
   provider: ServiceProvider.OpenAI,
 
   // openai
-  openaiUrl: DEFAULT_OPENAI_URL,
+  openaiUrl: OPENAI_BASE_URL,
   openaiApiKey: "",
 
   // azure
@@ -71,44 +39,44 @@ const DEFAULT_ACCESS_STATE = {
   azureApiVersion: "2023-08-01-preview",
 
   // google ai studio
-  googleUrl: DEFAULT_GOOGLE_URL,
+  googleUrl: GEMINI_BASE_URL,
   googleApiKey: "",
   googleApiVersion: "v1",
   googleSafetySettings: GoogleSafetySettingsThreshold.BLOCK_ONLY_HIGH,
 
   // anthropic
-  anthropicUrl: DEFAULT_ANTHROPIC_URL,
+  anthropicUrl: ANTHROPIC_BASE_URL,
   anthropicApiKey: "",
   anthropicApiVersion: "2023-06-01",
 
   // baidu
-  baiduUrl: DEFAULT_BAIDU_URL,
+  baiduUrl: BAIDU_BASE_URL,
   baiduApiKey: "",
   baiduSecretKey: "",
 
   // bytedance
-  bytedanceUrl: DEFAULT_BYTEDANCE_URL,
+  bytedanceUrl: BYTEDANCE_BASE_URL,
   bytedanceApiKey: "",
 
   // alibaba
-  alibabaUrl: DEFAULT_ALIBABA_URL,
+  alibabaUrl: ALIBABA_BASE_URL,
   alibabaApiKey: "",
 
   // moonshot
-  moonshotUrl: DEFAULT_MOONSHOT_URL,
+  moonshotUrl: MOONSHOT_BASE_URL,
   moonshotApiKey: "",
 
   //stability
-  stabilityUrl: DEFAULT_STABILITY_URL,
+  stabilityUrl: STABILITY_BASE_URL,
   stabilityApiKey: "",
 
   // tencent
-  tencentUrl: DEFAULT_TENCENT_URL,
+  tencentUrl: TENCENT_BASE_URL,
   tencentSecretKey: "",
   tencentSecretId: "",
 
   // iflytek
-  iflytekUrl: DEFAULT_IFLYTEK_URL,
+  iflytekUrl: IFLYTEK_BASE_URL,
   iflytekApiKey: "",
   iflytekApiSecret: "",
 
diff --git a/app/store/sync.ts b/app/store/sync.ts
index 9db60d5f4..c53a7a82a 100644
--- a/app/store/sync.ts
+++ b/app/store/sync.ts
@@ -12,7 +12,6 @@ import { downloadAs, readFromFile } from "../utils";
 import { showToast } from "../components/ui-lib";
 import Locale from "../locales";
 import { createSyncClient, ProviderType } from "../utils/cloud";
-import { corsPath } from "../utils/cors";
 
 export interface WebDavConfig {
   server: string;
@@ -26,7 +25,7 @@ export type SyncStore = GetStoreState<typeof useSyncStore>;
 const DEFAULT_SYNC_STATE = {
   provider: ProviderType.WebDAV,
   useProxy: true,
-  proxyUrl: corsPath(ApiPath.Cors),
+  proxyUrl: ApiPath.Cors,
 
   webdav: {
     endpoint: "",
diff --git a/app/utils/cors.ts b/app/utils/cors.ts
deleted file mode 100644
index f5e5ce6f0..000000000
--- a/app/utils/cors.ts
+++ /dev/null
@@ -1,19 +0,0 @@
-import { getClientConfig } from "../config/client";
-import { DEFAULT_API_HOST } from "../constant";
-
-export function corsPath(path: string) {
-  const baseUrl = getClientConfig()?.isApp ? `${DEFAULT_API_HOST}` : "";
-
-  if (baseUrl === "" && path === "") {
-    return "";
-  }
-  if (!path.startsWith("/")) {
-    path = "/" + path;
-  }
-
-  if (!path.endsWith("/")) {
-    path += "/";
-  }
-
-  return `${baseUrl}${path}`;
-}