diff --git a/README.md b/README.md
index bc3a3a6..c7fef32 100644
--- a/README.md
+++ b/README.md
@@ -148,16 +148,16 @@ Costs are resolved with priority **user override file > builtin list price > fal
 
 ```json
 {
-  "deepseek-v4-flash": {
+  "deepseek-flash": {
     "offPeak": {
-      "cny": { "cacheMissInput": 1.5, "cacheHitInput": 0.05, "output": 4.5 },
-      "usd": { "cacheMissInput": 0.22, "cacheHitInput": 0.007, "output": 0.66 }
+      "cny": { "cacheMissInput": 1, "cacheHitInput": 0.02, "output": 4 },
+      "usd": { "cacheMissInput": 0.15, "cacheHitInput": 0.003, "output": 0.6 }
     },
     "peak": {
-      "cny": { "cacheMissInput": 3.0, "cacheHitInput": 0.10, "output": 9.0 },
-      "usd": { "cacheMissInput": 0.44, "cacheHitInput": 0.014, "output": 1.32 }
+      "cny": { "cacheMissInput": 2, "cacheHitInput": 0.04, "output": 8 },
+      "usd": { "cacheMissInput": 0.3, "cacheHitInput": 0.006, "output": 1.2 }
     },
-    "verifiedAt": 1755100800000
+    "verifiedAt": 1788998400000
   }
 }
 ```
diff --git a/README_ZH.md b/README_ZH.md
index ab05fae..5968d4f 100644
--- a/README_ZH.md
+++ b/README_ZH.md
@@ -168,16 +168,16 @@ dsh web --profile web
 
 ```json
 {
-  "deepseek-v4-flash": {
+  "deepseek-flash": {
     "offPeak": {
-      "cny": { "cacheMissInput": 1.5, "cacheHitInput": 0.05, "output": 4.5 },
-      "usd": { "cacheMissInput": 0.22, "cacheHitInput": 0.007, "output": 0.66 }
+      "cny": { "cacheMissInput": 1, "cacheHitInput": 0.02, "output": 4 },
+      "usd": { "cacheMissInput": 0.15, "cacheHitInput": 0.003, "output": 0.6 }
     },
     "peak": {
-      "cny": { "cacheMissInput": 3.0, "cacheHitInput": 0.10, "output": 9.0 },
-      "usd": { "cacheMissInput": 0.44, "cacheHitInput": 0.014, "output": 1.32 }
+      "cny": { "cacheMissInput": 2, "cacheHitInput": 0.04, "output": 8 },
+      "usd": { "cacheMissInput": 0.3, "cacheHitInput": 0.006, "output": 1.2 }
     },
-    "verifiedAt": 1755100800000
+    "verifiedAt": 1788998400000
   }
 }
 ```
diff --git a/src/pricing/source.ts b/src/pricing/source.ts
index 8794d9b..70af990 100644
--- a/src/pricing/source.ts
+++ b/src/pricing/source.ts
@@ -31,23 +31,25 @@ export interface PricingSource {
 
 /**
  * 当前官方在售模型定价表（双币种 / 1M tokens，区分高峰/空闲时段）。
- * 来源：官方定价页（2026-08-26 核验）
+ * 来源：官方定价页（2026-09-10 核验）
  *  - 中文页 https://api-docs.deepseek.com/zh-cn/quick_start/pricing（CNY 报价）
  *  - 英文页 https://api-docs.deepseek.com/quick_start/pricing（USD 报价）
  * 高峰时段（北京时间周一至周五 09:00–12:00、14:00–18:00 = UTC 01:00–04:00、06:00–10:00）
  * 价格为空闲时段的两倍。
  */
-export const BUILTIN_PRICING: Record<string, ModelPricing> = {
-  'deepseek-v4-flash': {
-    offPeak: {
-      cny: { cacheMissInput: 1.5, cacheHitInput: 0.05, output: 4.5 },
-      usd: { cacheMissInput: 0.22, cacheHitInput: 0.007, output: 0.66 },
-    },
-    peak: {
-      cny: { cacheMissInput: 3.0, cacheHitInput: 0.10, output: 9.0 },
-      usd: { cacheMissInput: 0.44, cacheHitInput: 0.014, output: 1.32 },
-    },
+const FLASH_PRICING: ModelPricing = {
+  offPeak: {
+    cny: { cacheMissInput: 1, cacheHitInput: 0.02, output: 4 },
+    usd: { cacheMissInput: 0.15, cacheHitInput: 0.003, output: 0.6 },
   },
+  peak: {
+    cny: { cacheMissInput: 2, cacheHitInput: 0.04, output: 8 },
+    usd: { cacheMissInput: 0.3, cacheHitInput: 0.006, output: 1.2 },
+  },
+}
+
+export const BUILTIN_PRICING: Record<string, ModelPricing> = {
+  'deepseek-flash': FLASH_PRICING,
   'deepseek-v4-pro': {
     offPeak: {
       cny: { cacheMissInput: 4.5, cacheHitInput: 0.15, output: 13.5 },
@@ -58,23 +60,21 @@ export const BUILTIN_PRICING: Record<string, ModelPricing> = {
       usd: { cacheMissInput: 1.32, cacheHitInput: 0.044, output: 3.96 },
     },
   },
-  'deepseek-v4-flash-vision-exp': {
-    offPeak: {
-      cny: { cacheMissInput: 1.5, cacheHitInput: 0.05, output: 4.5 },
-      usd: { cacheMissInput: 0.22, cacheHitInput: 0.007, output: 0.66 },
-    },
-    peak: {
-      cny: { cacheMissInput: 3.0, cacheHitInput: 0.10, output: 9.0 },
-      usd: { cacheMissInput: 0.44, cacheHitInput: 0.014, output: 1.32 },
-    },
-  },
 }
 
-/** 内置表的核验日期（来源：官方定价页中/英文版，2026-08-26 抓取核验）。 */
-export const BUILTIN_VERIFIED_AT = Date.parse('2026-08-26T00:00:00Z')
+/**
+ * 旧模型名兼容：
+ *  - `deepseek-v4-flash` / `deepseek-v4-flash-vision-exp` 已并入 `deepseek-flash`，
+ *    仍按同一价格表解析，避免历史会话突然变成「未定价模型」。
+ */
+BUILTIN_PRICING['deepseek-v4-flash'] = FLASH_PRICING
+BUILTIN_PRICING['deepseek-v4-flash-vision-exp'] = FLASH_PRICING
+
+/** 内置表的核验日期（来源：官方定价页中/英文版，2026-09-10 抓取核验）。 */
+export const BUILTIN_VERIFIED_AT = Date.parse('2026-09-10T00:00:00Z')
 
-/** 未收录模型回退：按 deepseek-v4-flash 刊例价估算并标记 ≈。 */
-export const FALLBACK_PRICING: ModelPricing = BUILTIN_PRICING['deepseek-v4-flash']
+/** 未收录模型回退：按 deepseek-flash 刊例价估算并标记 ≈。 */
+export const FALLBACK_PRICING: ModelPricing = FLASH_PRICING
 
 /** 前缀匹配（如带日期后缀的模型版本）；精确匹配优先。 */
 function matchEntry<T>(table: Record<string, T>, model: string): T | null {
diff --git a/tests/core.test.mjs b/tests/core.test.mjs
index 2e69469..00ca057 100644
--- a/tests/core.test.mjs
+++ b/tests/core.test.mjs
@@ -72,17 +72,18 @@ test('foldTurnUsage ignores malformed or negative usage samples', () => {
 })
 
 test('pricing matches the documented DeepSeek V4 prices (CNY + USD, peak/off-peak)', () => {
-  assert.deepEqual(PRICING['deepseek-v4-flash'], {
+  assert.deepEqual(PRICING['deepseek-flash'], {
     offPeak: {
-      cny: { cacheMissInput: 1.5, cacheHitInput: 0.05, output: 4.5 },
-      usd: { cacheMissInput: 0.22, cacheHitInput: 0.007, output: 0.66 },
+      cny: { cacheMissInput: 1, cacheHitInput: 0.02, output: 4 },
+      usd: { cacheMissInput: 0.15, cacheHitInput: 0.003, output: 0.6 },
     },
     peak: {
-      cny: { cacheMissInput: 3.0, cacheHitInput: 0.10, output: 9.0 },
-      usd: { cacheMissInput: 0.44, cacheHitInput: 0.014, output: 1.32 },
+      cny: { cacheMissInput: 2, cacheHitInput: 0.04, output: 8 },
+      usd: { cacheMissInput: 0.3, cacheHitInput: 0.006, output: 1.2 },
     },
   })
-  assert.deepEqual(PRICING['deepseek-v4-flash-vision-exp'], PRICING['deepseek-v4-flash'])
+  assert.deepEqual(PRICING['deepseek-v4-flash'], PRICING['deepseek-flash'])
+  assert.deepEqual(PRICING['deepseek-v4-flash-vision-exp'], PRICING['deepseek-flash'])
   assert.equal(cacheHitPercent({ uncachedInputTokens: 50, outputTokens: 0, cacheReadTokens: 50, cacheWriteTokens: 0 }), 50)
   // 时刻未知 → 高峰价保守估算：1M 未命中输入 + 1M 输出（v4-pro 高峰 CNY = 9 + 27）
   assert.equal(estimateCost({ uncachedInputTokens: 1_000_000, outputTokens: 1_000_000, cacheReadTokens: 0, cacheWriteTokens: 0 }, 'deepseek-v4-pro').cny, 36)
diff --git a/tests/pricing.test.mjs b/tests/pricing.test.mjs
index ca02855..5772038 100644
--- a/tests/pricing.test.mjs
+++ b/tests/pricing.test.mjs
@@ -19,14 +19,14 @@ import {
   tierAt,
 } from '../lib/index.js'
 
-/** 2026-08-26 内置刊例价（双币种 /1M，高峰/空闲）。 */
+/** 2026-09-10 内置刊例价（双币种 /1M，高峰/空闲）。 */
 const FLASH_OFF_PEAK = {
-  cny: { cacheMissInput: 1.5, cacheHitInput: 0.05, output: 4.5 },
-  usd: { cacheMissInput: 0.22, cacheHitInput: 0.007, output: 0.66 },
+  cny: { cacheMissInput: 1, cacheHitInput: 0.02, output: 4 },
+  usd: { cacheMissInput: 0.15, cacheHitInput: 0.003, output: 0.6 },
 }
 const FLASH_PEAK = {
-  cny: { cacheMissInput: 3.0, cacheHitInput: 0.10, output: 9.0 },
-  usd: { cacheMissInput: 0.44, cacheHitInput: 0.014, output: 1.32 },
+  cny: { cacheMissInput: 2, cacheHitInput: 0.04, output: 8 },
+  usd: { cacheMissInput: 0.3, cacheHitInput: 0.006, output: 1.2 },
 }
 const PRO_OFF_PEAK = {
   cny: { cacheMissInput: 4.5, cacheHitInput: 0.15, output: 13.5 },
@@ -42,9 +42,10 @@ test('builtin source resolves exact and prefixed models, misses unknown', () =>
   assert.deepEqual(source.resolve('deepseek-v4-pro').pricing.offPeak, PRO_OFF_PEAK)
   assert.deepEqual(source.resolve('deepseek-v4-pro').pricing.peak, PRO_PEAK)
   // 前缀匹配（带日期后缀的模型版本）
-  assert.equal(source.resolve('deepseek-v4-flash-2026-08-01').pricing.offPeak.cny.output, 4.5)
-  assert.equal(source.resolve('deepseek-v4-flash-2026-08-01').pricing.offPeak.usd.output, 0.66)
-  assert.equal(source.resolve('deepseek-v4-flash-2026-08-01').pricing.peak.usd.output, 1.32)
+  assert.equal(source.resolve('deepseek-flash-2026-09-01').pricing.offPeak.cny.output, 4)
+  assert.equal(source.resolve('deepseek-flash-2026-09-01').pricing.offPeak.usd.output, 0.6)
+  assert.equal(source.resolve('deepseek-flash-2026-09-01').pricing.peak.usd.output, 1.2)
+  assert.deepEqual(source.resolve('deepseek-flash').pricing, { offPeak: FLASH_OFF_PEAK, peak: FLASH_PEAK })
   assert.deepEqual(source.resolve('deepseek-v4-flash-vision-exp').pricing.offPeak, FLASH_OFF_PEAK)
   assert.deepEqual(source.resolve('deepseek-v4-flash-vision-exp').pricing.peak, FLASH_PEAK)
   assert.equal(source.resolve('unknown-model').pricing, null)
@@ -106,12 +107,12 @@ test('costSplitAt bills in both official currencies per tier', () => {
   const usage = { uncachedInputTokens: 1_000_000, outputTokens: 1_000_000, cacheReadTokens: 0, cacheWriteTokens: 0 }
   const offPeakAt = Date.UTC(1970, 0, 1, 0, 0, 0) // 北京时间 08:00
   const peakAt = Date.UTC(1970, 0, 1, 2, 0, 0) // 北京时间 10:00
-  // 空闲：flash 未命中 1.5 + 输出 4.5（CNY）；0.22 + 0.66（USD）
-  assert.deepEqual(costSplitAt(usage, PRICING['deepseek-v4-flash'], offPeakAt, 'cny'), { input: 1.5, cacheRead: 0, output: 4.5, total: 6 })
-  assert.deepEqual(costSplitAt(usage, PRICING['deepseek-v4-flash'], offPeakAt, 'usd'), { input: 0.22, cacheRead: 0, output: 0.66, total: 0.88 })
+  // 空闲：flash 未命中 1 + 输出 4（CNY）；0.15 + 0.6（USD）
+  assert.deepEqual(costSplitAt(usage, PRICING['deepseek-flash'], offPeakAt, 'cny'), { input: 1, cacheRead: 0, output: 4, total: 5 })
+  assert.deepEqual(costSplitAt(usage, PRICING['deepseek-flash'], offPeakAt, 'usd'), { input: 0.15, cacheRead: 0, output: 0.6, total: 0.75 })
   // 高峰 = 空闲 × 2
-  assert.deepEqual(costSplitAt(usage, PRICING['deepseek-v4-flash'], peakAt, 'cny'), { input: 3, cacheRead: 0, output: 9, total: 12 })
-  assert.deepEqual(costSplitAt(usage, PRICING['deepseek-v4-flash'], peakAt, 'usd'), { input: 0.44, cacheRead: 0, output: 1.32, total: 1.76 })
+  assert.deepEqual(costSplitAt(usage, PRICING['deepseek-flash'], peakAt, 'cny'), { input: 2, cacheRead: 0, output: 8, total: 10 })
+  assert.deepEqual(costSplitAt(usage, PRICING['deepseek-flash'], peakAt, 'usd'), { input: 0.3, cacheRead: 0, output: 1.2, total: 1.5 })
 })
 
 test('parsePricingFile validates entries and accepts dual-currency + legacy shapes', () => {
@@ -239,12 +240,14 @@ test('file source serves prefix matches and refresh after rewrite', async () =>
 })
 
 test('estimateCost / pricingFor keep v0.1 compat semantics', () => {
-  assert.deepEqual(PRICING['deepseek-v4-flash'], { peak: FLASH_PEAK, offPeak: FLASH_OFF_PEAK })
+  assert.deepEqual(PRICING['deepseek-flash'], { peak: FLASH_PEAK, offPeak: FLASH_OFF_PEAK })
+  assert.deepEqual(PRICING['deepseek-v4-flash'], PRICING['deepseek-flash'])
   // 时刻未知 → 按高峰价保守估算：1M 未命中输入 + 1M 输出（v4-pro 高峰 CNY = 9 + 27）
   assert.equal(estimateCost({ uncachedInputTokens: 1_000_000, outputTokens: 1_000_000, cacheReadTokens: 0, cacheWriteTokens: 0 }, 'deepseek-v4-pro').cny, 36)
+  assert.equal(pricingFor('deepseek-flash').estimated, false)
   assert.equal(pricingFor('deepseek-v4-flash').estimated, false)
   assert.equal(pricingFor('unknown-model').estimated, true)
-  assert.equal(BUILTIN_VERIFIED_AT, Date.parse('2026-08-26T00:00:00Z'))
+  assert.equal(BUILTIN_VERIFIED_AT, Date.parse('2026-09-10T00:00:00Z'))
 })
 
 function responseRecorder() {
@@ -274,9 +277,9 @@ test('/pricing route exposes builtin + fallback + models snapshot', async () =>
   const body = JSON.parse(recorder.body)
   assert.equal(body.ok, true)
   assert.equal(body.builtinVerifiedAt, BUILTIN_VERIFIED_AT)
-  assert.equal(body.fallback.pricing.offPeak.cny.output, 4.5)
-  assert.equal(body.fallback.pricing.offPeak.usd.output, 0.66)
-  assert.equal(body.fallback.pricing.peak.usd.output, 1.32)
+  assert.equal(body.fallback.pricing.offPeak.cny.output, 4)
+  assert.equal(body.fallback.pricing.offPeak.usd.output, 0.6)
+  assert.equal(body.fallback.pricing.peak.usd.output, 1.2)
   const models = body.models.map((m) => m.model)
   assert.ok(models.includes('deepseek-v4-flash'))
   assert.ok(models.includes('deepseek-v4-pro'))
diff --git a/tests/rounds.test.mjs b/tests/rounds.test.mjs
index 1aa05a9..3b57d17 100644
--- a/tests/rounds.test.mjs
+++ b/tests/rounds.test.mjs
@@ -3,14 +3,14 @@ import test from 'node:test'
 
 import { apply, foldRounds, foldTurnUsage, tierAt } from '../lib/index.js'
 
-/** 2026-08-17 内置刊例价（双币种 /1M）：flash 高峰/空闲。 */
+/** 2026-09-10 内置刊例价（双币种 /1M）：flash 高峰/空闲。 */
 const FLASH_PEAK = {
-  cny: { cacheMissInput: 3.0, cacheHitInput: 0.10, output: 9.0 },
-  usd: { cacheMissInput: 0.44, cacheHitInput: 0.014, output: 1.32 },
+  cny: { cacheMissInput: 2, cacheHitInput: 0.04, output: 8 },
+  usd: { cacheMissInput: 0.3, cacheHitInput: 0.006, output: 1.2 },
 }
 const FLASH_OFF_PEAK = {
-  cny: { cacheMissInput: 1.5, cacheHitInput: 0.05, output: 4.5 },
-  usd: { cacheMissInput: 0.22, cacheHitInput: 0.007, output: 0.66 },
+  cny: { cacheMissInput: 1, cacheHitInput: 0.02, output: 4 },
+  usd: { cacheMissInput: 0.15, cacheHitInput: 0.003, output: 0.6 },
 }
 
 /** 合成事件流工具：seq 自动递增，time 由调用方给定。 */
@@ -68,12 +68,12 @@ test('foldRounds computes per-round timing, TTFT, TPS, model attribution and cos
   assert.equal(r1.cost.estimated, false)
   // 轮 1 开始于 1970-01-01T00:00:01Z = 北京时间 08:00（空闲时段）→ 空闲价
   assert.equal(tierAt(r1.startedAt), 'offPeak')
-  assert.equal(r1.cost.cny.input, (100 / 1_000_000) * 1.5)
-  assert.equal(r1.cost.cny.cacheRead, (30 / 1_000_000) * 0.05)
-  assert.equal(r1.cost.cny.output, (20 / 1_000_000) * 4.5)
-  assert.equal(r1.cost.usd.input, (100 / 1_000_000) * 0.22)
-  assert.equal(r1.cost.usd.cacheRead, (30 / 1_000_000) * 0.007)
-  assert.equal(r1.cost.usd.output, (20 / 1_000_000) * 0.66)
+  assert.equal(r1.cost.cny.input, (100 / 1_000_000) * 1)
+  assert.equal(r1.cost.cny.cacheRead, (30 / 1_000_000) * 0.02)
+  assert.equal(r1.cost.cny.output, (20 / 1_000_000) * 4)
+  assert.equal(r1.cost.usd.input, (100 / 1_000_000) * 0.15)
+  assert.equal(r1.cost.usd.cacheRead, (30 / 1_000_000) * 0.003)
+  assert.equal(r1.cost.usd.output, (20 / 1_000_000) * 0.6)
 
   const r2 = rounds.find((r) => r.turn === 2)
   assert.ok(r2, 'round 2 present')
@@ -101,11 +101,11 @@ test('foldRounds bills peak vs off-peak rounds by their start time', () => {
   const offPeak = rounds.find((r) => r.turn === 2)
   assert.equal(tierAt(peak.startedAt), 'peak')
   assert.equal(tierAt(offPeak.startedAt), 'offPeak')
-  // 1M 未命中输入：高峰 = 空闲 × 2（CNY 3.0/1.5；USD 0.44/0.22）
-  assert.equal(peak.cost.cny.total, 3.0)
-  assert.equal(peak.cost.usd.total, 0.44)
-  assert.equal(offPeak.cost.cny.total, 1.5)
-  assert.equal(offPeak.cost.usd.total, 0.22)
+  // 1M 未命中输入：高峰 = 空闲 × 2（CNY 2/1；USD 0.3/0.15）
+  assert.equal(peak.cost.cny.total, 2)
+  assert.equal(peak.cost.usd.total, 0.3)
+  assert.equal(offPeak.cost.cny.total, 1)
+  assert.equal(offPeak.cost.usd.total, 0.15)
 })
 
 test('foldRounds tolerates missing turn/end (open round) and missing model', () => {
@@ -150,9 +150,9 @@ test('foldRounds marks unknown models and uses fallback pricing', () => {
   assert.equal(rounds[0].cost.unknownModel, true)
   assert.equal(rounds[0].cost.estimated, true)
   assert.equal(rounds[0].cost.source, 'fallback')
-  // 轮开始于北京时间 08:00（空闲）→ 1M token × flash 空闲未命中价（CNY 1.5 / USD 0.22）
-  assert.equal(rounds[0].cost.cny.total, 1.5)
-  assert.equal(rounds[0].cost.usd.total, 0.22)
+  // 轮开始于北京时间 08:00（空闲）→ 1M token × flash 空闲未命中价（CNY 1 / USD 0.15）
+  assert.equal(rounds[0].cost.cny.total, 1)
+  assert.equal(rounds[0].cost.usd.total, 0.15)
 })
 
 test('foldTurnUsage stays compatible with the v0.1 semantics', () => {