diff --git a/frontend/src/components/account/EditAccountModal.vue b/frontend/src/components/account/EditAccountModal.vue
index 80f0b890..1d80ce45 100644
--- a/frontend/src/components/account/EditAccountModal.vue
+++ b/frontend/src/components/account/EditAccountModal.vue
@@ -139,7 +139,7 @@
 
             <!-- Whitelist Mode -->
             <div v-if="modelRestrictionMode === 'whitelist'">
-              <ModelWhitelistSelector v-model="allowedModels" :platform="account?.platform || 'anthropic'" />
+              <ModelWhitelistSelector v-model="allowedModels" :platform="account?.platform || 'anthropic'" :account-id="account?.id" />
               <p class="text-xs text-gray-500 dark:text-gray-400">
                 {{ t('admin.accounts.selectedModels', { count: allowedModels.length }) }}
                 <span v-if="allowedModels.length === 0">{{
@@ -454,7 +454,7 @@
 
           <!-- Whitelist Mode -->
           <div v-if="modelRestrictionMode === 'whitelist'">
-            <ModelWhitelistSelector v-model="allowedModels" :platform="account?.platform || 'anthropic'" />
+            <ModelWhitelistSelector v-model="allowedModels" :platform="account?.platform || 'anthropic'" :account-id="account?.id" />
             <p class="text-xs text-gray-500 dark:text-gray-400">
               {{ t('admin.accounts.selectedModels', { count: allowedModels.length }) }}
               <span v-if="allowedModels.length === 0">{{
@@ -666,7 +666,7 @@
 
           <!-- Whitelist Mode -->
           <div v-if="modelRestrictionMode === 'whitelist'">
-            <ModelWhitelistSelector v-model="allowedModels" :platform="account?.platform || 'anthropic'" />
+            <ModelWhitelistSelector v-model="allowedModels" :platform="account?.platform || 'anthropic'" :account-id="account?.id" />
             <p class="text-xs text-gray-500 dark:text-gray-400">
               {{ t('admin.accounts.selectedModels', { count: allowedModels.length }) }}
               <span v-if="allowedModels.length === 0">{{
@@ -987,6 +987,17 @@
             <p class="text-xs text-purple-700 dark:text-purple-400">{{ t('admin.accounts.mapRequestModels') }}</p>
           </div>
 
+          <div class="mb-3 flex flex-wrap gap-2">
+            <button
+              type="button"
+              @click="syncAntigravityUpstreamModels"
+              :disabled="isSyncingAntigravityUpstream || !account?.id"
+              class="rounded-lg border border-emerald-200 px-3 py-1.5 text-sm text-emerald-600 hover:bg-emerald-50 disabled:cursor-not-allowed disabled:opacity-60 dark:border-emerald-800 dark:text-emerald-400 dark:hover:bg-emerald-900/30"
+            >
+              {{ isSyncingAntigravityUpstream ? t('admin.accounts.syncUpstreamModelsLoading') : t('admin.accounts.syncUpstreamModels') }}
+            </button>
+          </div>
+
           <div v-if="antigravityModelMappings.length > 0" class="mb-3 space-y-2">
             <div
               v-for="(mapping, index) in antigravityModelMappings"
@@ -2288,6 +2299,7 @@ const allowOverages = ref(false) // For antigravity accounts: enable AI Credits
 const antigravityModelRestrictionMode = ref<'whitelist' | 'mapping'>('whitelist')
 const antigravityWhitelistModels = ref<string[]>([])
 const antigravityModelMappings = ref<ModelMapping[]>([])
+const isSyncingAntigravityUpstream = ref(false)
 const tempUnschedEnabled = ref(false)
 const tempUnschedRules = ref<TempUnschedRuleForm[]>([])
 const getModelMappingKey = createStableObjectKeyResolver<ModelMapping>('edit-model-mapping')
@@ -2935,6 +2947,40 @@ const addAntigravityPresetMapping = (from: string, to: string) => {
   antigravityModelMappings.value.push({ from, to })
 }
 
+const syncAntigravityUpstreamModels = async () => {
+  if (!props.account?.id || isSyncingAntigravityUpstream.value) return
+
+  isSyncingAntigravityUpstream.value = true
+  try {
+    const result = await adminAPI.accounts.syncUpstreamModels(props.account.id)
+    const upstreamModels = result.models.map((model) => model.trim()).filter(Boolean)
+    if (upstreamModels.length === 0) {
+      appStore.showInfo(t('admin.accounts.syncUpstreamModelsEmpty'))
+      return
+    }
+
+    let addedCount = 0
+    for (const model of upstreamModels) {
+      const exists = antigravityModelMappings.value.some((mapping) => mapping.from === model)
+      if (!exists) {
+        antigravityModelMappings.value.push({ from: model, to: model })
+        addedCount += 1
+      }
+    }
+
+    if (addedCount > 0) {
+      appStore.showSuccess(t('admin.accounts.syncUpstreamModelsSuccess', { count: addedCount, total: upstreamModels.length }))
+    } else {
+      appStore.showInfo(t('admin.accounts.syncUpstreamModelsNoChanges', { count: upstreamModels.length }))
+    }
+  } catch (error) {
+    const message = error instanceof Error ? error.message : t('admin.accounts.syncUpstreamModelsFailed')
+    appStore.showError(t('admin.accounts.syncUpstreamModelsError', { message }))
+  } finally {
+    isSyncingAntigravityUpstream.value = false
+  }
+}
+
 // Error code toggle helper
 const toggleErrorCode = (code: number) => {
   const index = selectedErrorCodes.value.indexOf(code)
diff --git a/frontend/src/components/account/ModelWhitelistSelector.vue b/frontend/src/components/account/ModelWhitelistSelector.vue
index ebce3740..9a0d6af8 100644
--- a/frontend/src/components/account/ModelWhitelistSelector.vue
+++ b/frontend/src/components/account/ModelWhitelistSelector.vue
@@ -85,6 +85,15 @@
       >
         {{ t('admin.accounts.fillRelatedModels') }}
       </button>
+      <button
+        v-if="canSyncUpstream"
+        type="button"
+        @click="syncUpstreamModels"
+        :disabled="isSyncingUpstream"
+        class="rounded-lg border border-emerald-200 px-3 py-1.5 text-sm text-emerald-600 hover:bg-emerald-50 disabled:cursor-not-allowed disabled:opacity-60 dark:border-emerald-800 dark:text-emerald-400 dark:hover:bg-emerald-900/30"
+      >
+        {{ isSyncingUpstream ? t('admin.accounts.syncUpstreamModelsLoading') : t('admin.accounts.syncUpstreamModels') }}
+      </button>
       <button
         type="button"
         @click="clearAll"
@@ -123,6 +132,7 @@
 import { ref, computed } from 'vue'
 import { useI18n } from 'vue-i18n'
 import { useAppStore } from '@/stores/app'
+import { accountsAPI } from '@/api/admin/accounts'
 import ModelIcon from '@/components/common/ModelIcon.vue'
 import Icon from '@/components/icons/Icon.vue'
 import { allModels, getModelsByPlatform } from '@/composables/useModelWhitelist'
@@ -133,6 +143,7 @@ const props = defineProps<{
   modelValue: string[]
   platform?: string
   platforms?: string[]
+  accountId?: number
 }>()
 
 const emit = defineEmits<{
@@ -145,6 +156,7 @@ const showDropdown = ref(false)
 const searchQuery = ref('')
 const customModel = ref('')
 const isComposing = ref(false)
+const isSyncingUpstream = ref(false)
 const normalizedPlatforms = computed(() => {
   const rawPlatforms =
     props.platforms && props.platforms.length > 0
@@ -162,6 +174,13 @@ const normalizedPlatforms = computed(() => {
   )
 })
 
+const upstreamSyncPlatforms = new Set(['anthropic', 'openai', 'gemini', 'antigravity'])
+const canSyncUpstream = computed(() => {
+  if (!props.accountId) return false
+  if (normalizedPlatforms.value.length === 0) return true
+  return normalizedPlatforms.value.some(platform => upstreamSyncPlatforms.has(platform.toLowerCase()))
+})
+
 const availableOptions = computed(() => {
   if (normalizedPlatforms.value.length === 0) {
     return allModels
@@ -229,6 +248,41 @@ const fillRelated = () => {
   emit('update:modelValue', newModels)
 }
 
+const syncUpstreamModels = async () => {
+  if (!props.accountId || isSyncingUpstream.value) return
+
+  isSyncingUpstream.value = true
+  try {
+    const result = await accountsAPI.syncUpstreamModels(props.accountId)
+    const upstreamModels = result.models.map(model => model.trim()).filter(Boolean)
+    if (upstreamModels.length === 0) {
+      appStore.showInfo(t('admin.accounts.syncUpstreamModelsEmpty'))
+      return
+    }
+
+    const newModels = [...props.modelValue]
+    let addedCount = 0
+    for (const model of upstreamModels) {
+      if (!newModels.includes(model)) {
+        newModels.push(model)
+        addedCount += 1
+      }
+    }
+
+    emit('update:modelValue', newModels)
+    if (addedCount > 0) {
+      appStore.showSuccess(t('admin.accounts.syncUpstreamModelsSuccess', { count: addedCount, total: upstreamModels.length }))
+    } else {
+      appStore.showInfo(t('admin.accounts.syncUpstreamModelsNoChanges', { count: upstreamModels.length }))
+    }
+  } catch (error) {
+    const message = error instanceof Error ? error.message : t('admin.accounts.syncUpstreamModelsFailed')
+    appStore.showError(t('admin.accounts.syncUpstreamModelsError', { message }))
+  } finally {
+    isSyncingUpstream.value = false
+  }
+}
+
 const clearAll = () => {
   emit('update:modelValue', [])
 }