diff --git a/web-app/package.json b/web-app/package.json
index da7849f87..9ead687c2 100644
--- a/web-app/package.json
+++ b/web-app/package.json
@@ -82,7 +82,7 @@
     "remark-math": "6.0.0",
     "sonner": "2.0.5",
     "tailwindcss": "4.1.4",
-    "token.js": "npm:token.js-fork@0.7.27",
+    "token.js": "npm:token.js-fork@0.7.29",
     "tw-animate-css": "1.2.8",
     "ulidx": "2.4.1",
     "unified": "11.0.5",
diff --git a/web-app/src/consts/providers.ts b/web-app/src/consts/providers.ts
index 328ba3a9a..d3d806888 100644
--- a/web-app/src/consts/providers.ts
+++ b/web-app/src/consts/providers.ts
@@ -96,7 +96,7 @@ export const predefinedProviders = [
   {
     active: true,
     api_key: '',
-    base_url: 'https://api.anthropic.com',
+    base_url: 'https://api.anthropic.com/v1',
     provider: 'anthropic',
     explore_models_url:
       'https://docs.anthropic.com/en/docs/about-claude/models',
@@ -127,11 +127,21 @@ export const predefinedProviders = [
       },
     ],
     models: [],
+    custom_header: [
+      {
+        header: 'anthropic-version',
+        value: '2023-06-01'
+      },
+      {
+        header: 'anthropic-dangerous-direct-browser-access',
+        value: 'true'
+      }
+    ]
   },
   {
     active: true,
     api_key: '',
-    base_url: 'https://api.cohere.ai/compatibility/v1',
+    base_url: 'https://api.cohere.ai/v1',
     explore_models_url: 'https://docs.cohere.com/v2/docs/models',
     provider: 'cohere',
     settings: [
diff --git a/web-app/src/hooks/useModelProvider.ts b/web-app/src/hooks/useModelProvider.ts
index a0b5a96ce..926cbdd0d 100644
--- a/web-app/src/hooks/useModelProvider.ts
+++ b/web-app/src/hooks/useModelProvider.ts
@@ -320,9 +320,82 @@ export const useModelProvider = create<ModelProviderState>()(
           })
         }
 
+        if (version <= 3 && state?.providers) {
+          state.providers.forEach((provider) => {
+            // Migrate Anthropic provider base URL and add custom headers
+            if (provider.provider === 'anthropic') {
+              if (provider.base_url === 'https://api.anthropic.com') {
+                provider.base_url = 'https://api.anthropic.com/v1'
+              }
+
+              // Update base-url in settings
+              if (provider.settings) {
+                const baseUrlSetting = provider.settings.find(
+                  (s) => s.key === 'base-url'
+                )
+                if (
+                  baseUrlSetting?.controller_props?.value ===
+                  'https://api.anthropic.com'
+                ) {
+                  baseUrlSetting.controller_props.value =
+                    'https://api.anthropic.com/v1'
+                }
+                if (
+                  baseUrlSetting?.controller_props?.placeholder ===
+                  'https://api.anthropic.com'
+                ) {
+                  baseUrlSetting.controller_props.placeholder =
+                    'https://api.anthropic.com/v1'
+                }
+              }
+
+              if (!provider.custom_header) {
+                provider.custom_header = [
+                  {
+                    header: 'anthropic-version',
+                    value: '2023-06-01',
+                  },
+                  {
+                    header: 'anthropic-dangerous-direct-browser-access',
+                    value: 'true',
+                  },
+                ]
+              }
+            }
+
+            if (provider.provider === 'cohere') {
+              if (provider.base_url === 'https://api.cohere.ai/compatibility/v1') {
+                provider.base_url = 'https://api.cohere.ai/v1'
+              }
+
+              // Update base-url in settings
+              if (provider.settings) {
+                const baseUrlSetting = provider.settings.find(
+                  (s) => s.key === 'base-url'
+                )
+                if (
+                  baseUrlSetting?.controller_props?.value ===
+                  'https://api.cohere.ai/compatibility/v1'
+                ) {
+                  baseUrlSetting.controller_props.value =
+                    'https://api.cohere.ai/v1'
+                }
+                if (
+                  baseUrlSetting?.controller_props?.placeholder ===
+                  'https://api.cohere.ai/compatibility/v1'
+                ) {
+                  baseUrlSetting.controller_props.placeholder =
+                    'https://api.cohere.ai/v1'
+                }
+              }
+            }
+
+          })
+        }
+
         return state
       },
-      version: 3,
+      version: 4,
     }
   )
 )
diff --git a/web-app/src/routes/settings/providers/index.tsx b/web-app/src/routes/settings/providers/index.tsx
index b22487390..7b9afd905 100644
--- a/web-app/src/routes/settings/providers/index.tsx
+++ b/web-app/src/routes/settings/providers/index.tsx
@@ -39,7 +39,7 @@ function ModelProviders() {
         toast.error(t('providerAlreadyExists', { name }))
         return
       }
-      const newProvider = {
+      const newProvider: ProviderObject = {
         provider: name,
         active: true,
         models: [],
diff --git a/web-app/src/services/providers/tauri.ts b/web-app/src/services/providers/tauri.ts
index a8ca36fbb..4e08ee751 100644
--- a/web-app/src/services/providers/tauri.ts
+++ b/web-app/src/services/providers/tauri.ts
@@ -151,6 +151,12 @@ export class TauriProvidersService extends DefaultProvidersService {
         headers['Authorization'] = `Bearer ${provider.api_key}`
       }
 
+      if (provider.custom_header) {
+        provider.custom_header.forEach((header) => {
+          headers[header.header] = header.value
+        })
+      }
+
       // Always use Tauri's fetch to avoid CORS issues
       const response = await fetchTauri(`${provider.base_url}/models`, {
         method: 'GET',
diff --git a/web-app/src/types/modelProviders.d.ts b/web-app/src/types/modelProviders.d.ts
index 93cdd0df2..2225adee0 100644
--- a/web-app/src/types/modelProviders.d.ts
+++ b/web-app/src/types/modelProviders.d.ts
@@ -48,6 +48,7 @@ type ProviderObject = {
   settings: ProviderSetting[]
   models: Model[]
   persist?: boolean
+  custom_header?: ProviderCustomHeader[] | null
 }
 
 /**
@@ -71,3 +72,8 @@ type ProxyOptions = {
   verifyHostSSL: boolean
   noProxy: string
 }
+
+type ProviderCustomHeader = {
+  header: string
+  value: string
+}
\ No newline at end of file