diff --git a/backend/internal/handler/available_channel_handler.go b/backend/internal/handler/available_channel_handler.go
index ffa2408bcd..ae01687bdb 100644
--- a/backend/internal/handler/available_channel_handler.go
+++ b/backend/internal/handler/available_channel_handler.go
@@ -81,15 +81,19 @@ type userSupportedModelPricing struct {
 
 // userPricingIntervalDTO 定价区间白名单（去掉内部 ID、SortOrder 等前端不渲染的字段）。
 type userPricingIntervalDTO struct {
-	MinTokens         int      `json:"min_tokens"`
-	MaxTokens         *int     `json:"max_tokens"`
-	TierLabel         string   `json:"tier_label,omitempty"`
-	InputPrice        *float64 `json:"input_price"`
-	OutputPrice       *float64 `json:"output_price"`
-	CacheWritePrice   *float64 `json:"cache_write_price"`
-	CacheWrite1hPrice *float64 `json:"cache_write_1h_price"`
-	CacheReadPrice    *float64 `json:"cache_read_price"`
-	PerRequestPrice   *float64 `json:"per_request_price"`
+	MinTokens            int      `json:"min_tokens"`
+	MaxTokens            *int     `json:"max_tokens"`
+	TierLabel            string   `json:"tier_label,omitempty"`
+	InputPrice           *float64 `json:"input_price"`
+	OutputPrice          *float64 `json:"output_price"`
+	CacheWritePrice      *float64 `json:"cache_write_price"`
+	CacheWrite1hPrice    *float64 `json:"cache_write_1h_price"`
+	CacheReadPrice       *float64 `json:"cache_read_price"`
+	InputMultiplier      *float64 `json:"input_multiplier"`
+	OutputMultiplier     *float64 `json:"output_multiplier"`
+	CacheWriteMultiplier *float64 `json:"cache_write_multiplier"`
+	CacheReadMultiplier  *float64 `json:"cache_read_multiplier"`
+	PerRequestPrice      *float64 `json:"per_request_price"`
 }
 
 // userSupportedModel 用户可见的支持模型条目。
@@ -295,15 +299,19 @@ func toUserPricingIntervals(src []service.PricingInterval) []userPricingInterval
 	intervals := make([]userPricingIntervalDTO, 0, len(src))
 	for _, iv := range src {
 		intervals = append(intervals, userPricingIntervalDTO{
-			MinTokens:         iv.MinTokens,
-			MaxTokens:         iv.MaxTokens,
-			TierLabel:         iv.TierLabel,
-			InputPrice:        iv.InputPrice,
-			OutputPrice:       iv.OutputPrice,
-			CacheWritePrice:   iv.CacheWritePrice,
-			CacheWrite1hPrice: iv.CacheWrite1hPrice,
-			CacheReadPrice:    iv.CacheReadPrice,
-			PerRequestPrice:   iv.PerRequestPrice,
+			MinTokens:            iv.MinTokens,
+			MaxTokens:            iv.MaxTokens,
+			TierLabel:            iv.TierLabel,
+			InputPrice:           iv.InputPrice,
+			OutputPrice:          iv.OutputPrice,
+			CacheWritePrice:      iv.CacheWritePrice,
+			CacheWrite1hPrice:    iv.CacheWrite1hPrice,
+			CacheReadPrice:       iv.CacheReadPrice,
+			InputMultiplier:      iv.InputMultiplier,
+			OutputMultiplier:     iv.OutputMultiplier,
+			CacheWriteMultiplier: iv.CacheWriteMultiplier,
+			CacheReadMultiplier:  iv.CacheReadMultiplier,
+			PerRequestPrice:      iv.PerRequestPrice,
 		})
 	}
 	return intervals
diff --git a/backend/internal/handler/available_channel_handler_test.go b/backend/internal/handler/available_channel_handler_test.go
index 24d7d1cb45..325f10133b 100644
--- a/backend/internal/handler/available_channel_handler_test.go
+++ b/backend/internal/handler/available_channel_handler_test.go
@@ -113,10 +113,18 @@ func TestUserAvailableChannel_FieldWhitelist(t *testing.T) {
 	}
 
 	// pricing interval 白名单：不应暴露 id / sort_order。
+	inputMultiplier := 2.0
+	outputMultiplier := 1.5
+	cacheWriteMultiplier := 2.0
+	cacheReadMultiplier := 2.0
 	pricing := toUserPricing(&service.ChannelModelPricing{
 		BillingMode: service.BillingModeToken,
 		Intervals: []service.PricingInterval{
-			{ID: 7, MinTokens: 0, MaxTokens: nil, SortOrder: 3},
+			{
+				ID: 7, MinTokens: 0, MaxTokens: nil, SortOrder: 3,
+				InputMultiplier: &inputMultiplier, OutputMultiplier: &outputMultiplier,
+				CacheWriteMultiplier: &cacheWriteMultiplier, CacheReadMultiplier: &cacheReadMultiplier,
+			},
 		},
 	})
 	require.NotNil(t, pricing)
@@ -129,6 +137,14 @@ func TestUserAvailableChannel_FieldWhitelist(t *testing.T) {
 		_, exists := ivDecoded[key]
 		require.Falsef(t, exists, "user pricing interval must not expose %q", key)
 	}
+	for key, want := range map[string]float64{
+		"input_multiplier": inputMultiplier, "output_multiplier": outputMultiplier,
+		"cache_write_multiplier": cacheWriteMultiplier, "cache_read_multiplier": cacheReadMultiplier,
+	} {
+		got, exists := ivDecoded[key]
+		require.Truef(t, exists, "user pricing interval must expose %q", key)
+		require.InDelta(t, want, got.(float64), 1e-12)
+	}
 }
 
 func TestBuildPlatformSections_GroupsByPlatform(t *testing.T) {
diff --git a/frontend/src/api/channels.ts b/frontend/src/api/channels.ts
index c998fc3efb..5c3f83542e 100644
--- a/frontend/src/api/channels.ts
+++ b/frontend/src/api/channels.ts
@@ -31,6 +31,10 @@ export interface UserPricingInterval {
   cache_write_price: number | null
   cache_write_1h_price?: number | null
   cache_read_price: number | null
+  input_multiplier?: number | null
+  output_multiplier?: number | null
+  cache_write_multiplier?: number | null
+  cache_read_multiplier?: number | null
   per_request_price: number | null
 }
 
diff --git a/frontend/src/api/modelPlaza.ts b/frontend/src/api/modelPlaza.ts
index e96a621934..5096efbe82 100644
--- a/frontend/src/api/modelPlaza.ts
+++ b/frontend/src/api/modelPlaza.ts
@@ -46,7 +46,7 @@ export interface PlazaTimePricing {
 export interface PlazaModel {
   name: string
   platform: string
-  /** 实收口径的展示定价：多档时 intervals 为各档绝对单价（已由计费服务折算）；均为标准时段价。 */
+  /** 实收口径的展示定价：档位可提供绝对单价或相对基础价倍率；均为标准时段价。 */
   pricing: UserSupportedModelPricing | null
   official_pricing: PlazaOfficialPricing | null
   /** 仅多档模型返回。 */
diff --git a/frontend/src/components/channels/SupportedModelChip.vue b/frontend/src/components/channels/SupportedModelChip.vue
index b94fc9f072..04a2ad9de5 100644
--- a/frontend/src/components/channels/SupportedModelChip.vue
+++ b/frontend/src/components/channels/SupportedModelChip.vue
@@ -153,7 +153,7 @@
                     <template v-if="iv.tier_label">{{ iv.tier_label }}</template>
                     <template v-else>{{ formatRange(iv.min_tokens, iv.max_tokens) }}</template>
                   </span>
-                  <span>{{ formatInterval(iv, model.pricing.billing_mode) }}</span>
+                  <span>{{ formatInterval(iv, model.pricing) }}</span>
                 </div>
               </div>
             </div>
@@ -172,12 +172,11 @@ import { formatScaled } from '@/utils/pricing'
 import {
   BILLING_MODE_TOKEN,
   BILLING_MODE_PER_REQUEST,
-  BILLING_MODE_IMAGE,
-  type BillingMode
+  BILLING_MODE_IMAGE
 } from '@/constants/channel'
 // 复用 api/channels.ts 的用户侧最小形态 DTO。
 // admin 侧 ChannelModelPricing 字段更多，但结构上是用户 DTO 的超集，admin 视图传入可直接通过结构化子类型检查。
-import type { UserPricingInterval, UserSupportedModel } from '@/api/channels'
+import type { UserPricingInterval, UserSupportedModel, UserSupportedModelPricing } from '@/api/channels'
 import PlatformIcon from '@/components/common/PlatformIcon.vue'
 import type { GroupPlatform } from '@/types'
 import { platformBadgeClass, platformBorderClass, platformBadgeLightClass } from '@/utils/platformColors'
@@ -246,12 +245,22 @@ function formatRange(min: number, max: number | null): string {
   return `(${min}, ${maxLabel}]`
 }
 
-function formatInterval(iv: UserPricingInterval, mode: BillingMode): string {
-  if (mode === BILLING_MODE_PER_REQUEST || mode === BILLING_MODE_IMAGE) {
+function effectiveIntervalPrice(
+  price: number | null | undefined,
+  multiplier: number | null | undefined,
+  basePrice: number | null
+): number | null {
+  if (price != null) return price
+  if (multiplier != null && basePrice != null) return basePrice * multiplier
+  return basePrice
+}
+
+function formatInterval(iv: UserPricingInterval, pricing: UserSupportedModelPricing): string {
+  if (pricing.billing_mode === BILLING_MODE_PER_REQUEST || pricing.billing_mode === BILLING_MODE_IMAGE) {
     return formatScaled(iv.per_request_price, 1)
   }
-  const input = formatScaled(iv.input_price, perMillionScale)
-  const output = formatScaled(iv.output_price, perMillionScale)
+  const input = formatScaled(effectiveIntervalPrice(iv.input_price, iv.input_multiplier, pricing.input_price), perMillionScale)
+  const output = formatScaled(effectiveIntervalPrice(iv.output_price, iv.output_multiplier, pricing.output_price), perMillionScale)
   return `${input} / ${output}`
 }
 
diff --git a/frontend/src/components/channels/__tests__/SupportedModelChip.spec.ts b/frontend/src/components/channels/__tests__/SupportedModelChip.spec.ts
new file mode 100644
index 0000000000..b3799b697c
--- /dev/null
+++ b/frontend/src/components/channels/__tests__/SupportedModelChip.spec.ts
@@ -0,0 +1,54 @@
+import { nextTick } from 'vue'
+import { describe, expect, it, vi } from 'vitest'
+import { mount } from '@vue/test-utils'
+import SupportedModelChip from '../SupportedModelChip.vue'
+
+vi.mock('vue-i18n', async () => {
+  const actual = await vi.importActual<typeof import('vue-i18n')>('vue-i18n')
+  return {
+    ...actual,
+    useI18n: () => ({ t: (key: string) => key })
+  }
+})
+
+describe('SupportedModelChip', () => {
+  it('仅配置区间倍率时按基础价展示 token 档位', async () => {
+    const wrapper = mount(SupportedModelChip, {
+      attachTo: document.body,
+      props: {
+        model: {
+          name: 'gpt-test',
+          platform: '',
+          pricing: {
+            billing_mode: 'token',
+            input_price: 10e-6,
+            output_price: 50e-6,
+            cache_write_price: null,
+            cache_read_price: null,
+            image_input_price: null,
+            image_output_price: null,
+            per_request_price: null,
+            intervals: [{
+              min_tokens: 272000,
+              max_tokens: null,
+              input_price: null,
+              output_price: null,
+              cache_write_price: null,
+              cache_read_price: null,
+              input_multiplier: 2,
+              output_multiplier: 1.5,
+              per_request_price: null
+            }]
+          }
+        },
+        showPlatform: false
+      }
+    })
+
+    await wrapper.find('[tabindex="0"]').trigger('mouseenter')
+    await nextTick()
+
+    expect(document.body.textContent).toContain('$20 / $75')
+    wrapper.unmount()
+  })
+})
diff --git a/frontend/src/components/modelPlaza/PlazaModelPricingTable.vue b/frontend/src/components/modelPlaza/PlazaModelPricingTable.vue
index 43aee2c140..59910f2a36 100644
--- a/frontend/src/components/modelPlaza/PlazaModelPricingTable.vue
+++ b/frontend/src/components/modelPlaza/PlazaModelPricingTable.vue
@@ -119,7 +119,7 @@
                   class="whitespace-nowrap text-xs leading-5"
                 >
                   <span class="mr-1 font-sans font-normal text-gray-400 dark:text-dark-500" :title="tierHint(m)">{{ tierLabel(iv) }}</span>
-                  {{ paidPerMillion(iv.input_price, period) }}
+                  {{ paidPerMillion(effectiveIntervalPrice(iv.input_price, iv.input_multiplier, m.pricing?.input_price), period) }}
                 </div>
               </template>
               <template v-else>{{ paidPerMillion(m.pricing?.input_price, period) }}</template>
@@ -132,7 +132,7 @@
                   class="whitespace-nowrap text-xs leading-5"
                   :title="tierHint(m)"
                 >
-                  {{ paidPerMillion(iv.output_price, period) }}
+                  {{ paidPerMillion(effectiveIntervalPrice(iv.output_price, iv.output_multiplier, m.pricing?.output_price), period) }}
                 </div>
               </template>
               <template v-else>{{ paidPerMillion(m.pricing?.output_price, period) }}</template>
@@ -145,15 +145,15 @@
                   class="whitespace-nowrap font-mono text-xs leading-5 text-gray-800 dark:text-gray-200"
                   :title="tierHint(m)"
                 >
-                  <template v-if="iv.cache_write_price != null || iv.cache_write_1h_price != null || iv.cache_read_price != null">
+                  <template v-if="iv.cache_write_price != null || iv.cache_write_1h_price != null || iv.cache_read_price != null || iv.cache_write_multiplier != null || iv.cache_read_multiplier != null">
                     <span class="font-sans font-normal text-gray-400 dark:text-dark-500">{{ t('modelPlaza.table.cacheWriteShort') }}</span>
-                    {{ paidPerMillion(iv.cache_write_price, period) }}
-                    <template v-if="iv.cache_write_1h_price != null"
-                      ><span class="font-sans font-normal text-gray-400 dark:text-dark-500"> (1h </span>{{ paidPerMillion(iv.cache_write_1h_price, period)
+                    {{ paidPerMillion(effectiveIntervalPrice(iv.cache_write_price, iv.cache_write_multiplier, m.pricing?.cache_write_price), period) }}
+                    <template v-if="effectiveIntervalPrice(iv.cache_write_1h_price, iv.cache_write_multiplier, m.pricing?.cache_write_1h_price) != null"
+                      ><span class="font-sans font-normal text-gray-400 dark:text-dark-500"> (1h </span>{{ paidPerMillion(effectiveIntervalPrice(iv.cache_write_1h_price, iv.cache_write_multiplier, m.pricing?.cache_write_1h_price), period)
                       }}<span class="font-sans font-normal text-gray-400 dark:text-dark-500">)</span></template
                     >
                     <span class="ml-1 font-sans font-normal text-gray-400 dark:text-dark-500">{{ t('modelPlaza.table.cacheReadShort') }}</span>
-                    {{ paidPerMillion(iv.cache_read_price, period) }}
+                    {{ paidPerMillion(effectiveIntervalPrice(iv.cache_read_price, iv.cache_read_multiplier, m.pricing?.cache_read_price), period) }}
                   </template>
                   <span v-else class="text-gray-400 dark:text-dark-500">-</span>
                 </div>
@@ -217,7 +217,7 @@
                 class="whitespace-nowrap leading-5"
               >
                 <span class="mr-1 font-sans text-gray-400 dark:text-dark-500" :title="t('modelPlaza.table.tierHint')">{{ tierLabel(iv) }}</span>
-                {{ official(iv.input_price) }}
+                {{ official(effectiveIntervalPrice(iv.input_price, iv.input_multiplier, m.official_pricing?.input_price)) }}
               </div>
             </template>
             <template v-else>{{ official(m.official_pricing?.input_price) }}</template>
@@ -230,7 +230,7 @@
                 class="whitespace-nowrap leading-5"
                 :title="t('modelPlaza.table.tierHint')"
               >
-                {{ official(iv.output_price) }}
+                {{ official(effectiveIntervalPrice(iv.output_price, iv.output_multiplier, m.official_pricing?.output_price)) }}
               </div>
             </template>
             <template v-else>{{ official(m.official_pricing?.output_price) }}</template>
@@ -243,15 +243,15 @@
                 class="whitespace-nowrap font-mono text-xs leading-5 text-gray-500 dark:text-dark-400"
                 :title="t('modelPlaza.table.tierHint')"
               >
-                <template v-if="iv.cache_write_price != null || iv.cache_write_1h_price != null || iv.cache_read_price != null">
+                <template v-if="iv.cache_write_price != null || iv.cache_write_1h_price != null || iv.cache_read_price != null || iv.cache_write_multiplier != null || iv.cache_read_multiplier != null">
                   <span class="font-sans text-gray-400 dark:text-dark-500">{{ t('modelPlaza.table.cacheWriteShort') }}</span>
-                  {{ official(iv.cache_write_price) }}
-                  <template v-if="iv.cache_write_1h_price != null"
-                    ><span class="font-sans text-gray-400 dark:text-dark-500"> (1h </span>{{ official(iv.cache_write_1h_price)
+                  {{ official(effectiveIntervalPrice(iv.cache_write_price, iv.cache_write_multiplier, m.official_pricing?.cache_write_price)) }}
+                  <template v-if="effectiveIntervalPrice(iv.cache_write_1h_price, iv.cache_write_multiplier, m.official_pricing?.cache_write_1h_price) != null"
+                    ><span class="font-sans text-gray-400 dark:text-dark-500"> (1h </span>{{ official(effectiveIntervalPrice(iv.cache_write_1h_price, iv.cache_write_multiplier, m.official_pricing?.cache_write_1h_price))
                     }}<span class="font-sans text-gray-400 dark:text-dark-500">)</span></template
                   >
                   <span class="ml-1 font-sans text-gray-400 dark:text-dark-500">{{ t('modelPlaza.table.cacheReadShort') }}</span>
-                  {{ official(iv.cache_read_price) }}
+                  {{ official(effectiveIntervalPrice(iv.cache_read_price, iv.cache_read_multiplier, m.official_pricing?.cache_read_price)) }}
                 </template>
                 <span v-else class="text-gray-400 dark:text-dark-500">-</span>
               </div>
@@ -434,6 +434,16 @@ function official(value: number | null | undefined): string {
   return formatScaled(value, PER_MILLION, MIN_DECIMALS)
 }
 
+function effectiveIntervalPrice(
+  price: number | null | undefined,
+  multiplier: number | null | undefined,
+  basePrice: number | null | undefined
+): number | null | undefined {
+  if (price != null) return price
+  if (multiplier != null && basePrice != null) return basePrice * multiplier
+  return basePrice
+}
+
 /** 非 token 计费的单位后缀:按图片 → “/ 张”,按次 → “/ 次”。 */
 function perUnitSuffix(m: PlazaModel): string {
   return billingMode(m) === BILLING_MODE_IMAGE
@@ -495,7 +505,10 @@ function officialIntervals(m: PlazaModel): UserPricingInterval[] {
 
 /** 任一档带缓存价才按档渲染缓存列;否则沿用平价的写入/读取两行。 */
 function hasTierCachePricing(intervals: UserPricingInterval[]): boolean {
-  return intervals.some((iv) => iv.cache_write_price != null || iv.cache_write_1h_price != null || iv.cache_read_price != null)
+  return intervals.some((iv) =>
+    iv.cache_write_price != null || iv.cache_write_1h_price != null || iv.cache_read_price != null ||
+    iv.cache_write_multiplier != null || iv.cache_read_multiplier != null
+  )
 }
 
 /** 档位说明:整单按档计价,或(平台旧规则)仅超出部分按档计价。 */
diff --git a/frontend/src/components/modelPlaza/__tests__/PlazaModelPricingTable.spec.ts b/frontend/src/components/modelPlaza/__tests__/PlazaModelPricingTable.spec.ts
index 902195f384..e5bee72305 100644
--- a/frontend/src/components/modelPlaza/__tests__/PlazaModelPricingTable.spec.ts
+++ b/frontend/src/components/modelPlaza/__tests__/PlazaModelPricingTable.spec.ts
@@ -294,6 +294,44 @@ describe('PlazaModelPricingTable', () => {
     expect(text).toContain('$15.00')
   })
 
+  it('仅配置区间倍率时按基础价格展示 input/output/cache 各档价格', () => {
+    const model = tokenModel({
+      pricing: {
+        billing_mode: 'token',
+        input_price: 10e-6,
+        output_price: 50e-6,
+        cache_write_price: 12.5e-6,
+        cache_write_1h_price: 12.5e-6,
+        cache_read_price: 2e-6,
+        image_input_price: null,
+        image_output_price: null,
+        per_request_price: null,
+        intervals: [{
+          min_tokens: 272000,
+          max_tokens: null,
+          tier_label: '>272K',
+          input_price: null,
+          output_price: null,
+          cache_write_price: null,
+          cache_write_1h_price: null,
+          cache_read_price: null,
+          input_multiplier: 2,
+          output_multiplier: 1.5,
+          cache_write_multiplier: 2,
+          cache_read_multiplier: 2,
+          per_request_price: null
+        }]
+      },
+      official_pricing: null
+    })
+
+    const text = mountTable([model], 1).text()
+    expect(text).toContain('$20.00')
+    expect(text).toContain('$75.00')
+    expect(text).toContain('$25.00')
+    expect(text).toContain('$4.00')
+  })
+
   it('生图独立倍率开启时,按图价格 × 独立倍率,不乘分组倍率;倍率列展示独立倍率', () => {
     const model = tokenModel({
       name: 'gpt-image-2',