diff --git a/dist/index.html b/dist/index.html
index 331f385..b1874f8 100644
--- a/dist/index.html
+++ b/dist/index.html
@@ -7,8 +7,8 @@
     <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
     <link href="https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Noto+Sans+SC:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap" rel="stylesheet" />
     <title>AI Platform</title>
-    <script type="module" crossorigin src="/assets/index-VPjF2gPe.js"></script>
-    <link rel="stylesheet" crossorigin href="/assets/index-DZDvBjih.css">
+    <script type="module" crossorigin src="/assets/index-CgGPBQ4H.js"></script>
+    <link rel="stylesheet" crossorigin href="/assets/index-B3G1pDJs.css">
   </head>
   <body class="antialiased">
     <script>
diff --git a/src/i18n/locales/en.json b/src/i18n/locales/en.json
index bea829f..c217412 100644
--- a/src/i18n/locales/en.json
+++ b/src/i18n/locales/en.json
@@ -197,6 +197,8 @@
     "pricing.model": "Model",
     "pricing.inputPrice": "Input / 1M tokens",
     "pricing.outputPrice": "Output / 1M tokens",
+    "pricing.perCall": "Per call",
+    "pricing.perCallUnit": "call",
     "pricing.status": "Status",
     "pricing.online": "Online",
     "pricing.unknown": "Unknown",
@@ -246,7 +248,9 @@
     "topup.onlineTopup": "Online Top Up",
     "topup.selectAmount": "Select Amount",
     "topup.customAmount": "Custom Amount",
-    "topup.amountPlaceholder": "Enter amount (min ${{min}})",
+    "topup.customAmountHint": "Custom amounts are automatically aligned to payable tiers so the entered and charged amounts stay consistent.",
+    "topup.rechargeAmountLabel": "Recharge Amount",
+    "topup.amountPlaceholder": "Enter amount (min {{min}})",
     "topup.paymentMethod": "Payment Method",
     "topup.processing": "Processing...",
     "topup.calculating": "Calculating...",
diff --git a/src/i18n/locales/zh.json b/src/i18n/locales/zh.json
index f24dacd..0740ca9 100644
--- a/src/i18n/locales/zh.json
+++ b/src/i18n/locales/zh.json
@@ -197,6 +197,8 @@
     "pricing.model": "模型",
     "pricing.inputPrice": "输入 / 百万 token",
     "pricing.outputPrice": "输出 / 百万 token",
+    "pricing.perCall": "按次计费",
+    "pricing.perCallUnit": "次",
     "pricing.status": "状态",
     "pricing.online": "在线",
     "pricing.unknown": "未知",
@@ -246,7 +248,9 @@
     "topup.onlineTopup": "在线充值",
     "topup.selectAmount": "选择金额",
     "topup.customAmount": "自定义金额",
-    "topup.amountPlaceholder": "输入金额（最低 ${{min}}）",
+    "topup.customAmountHint": "自定义金额会自动对齐到可支付档位，避免输入金额和实付金额不一致。",
+    "topup.rechargeAmountLabel": "充值金额",
+    "topup.amountPlaceholder": "输入金额（最低 {{min}}）",
     "topup.paymentMethod": "支付方式",
     "topup.processing": "处理中...",
     "topup.calculating": "计算中...",
diff --git a/src/pages/Pricing.jsx b/src/pages/Pricing.jsx
index 89e8b1e..b71324b 100644
--- a/src/pages/Pricing.jsx
+++ b/src/pages/Pricing.jsx
@@ -45,11 +45,26 @@ export default function Pricing() {
         (m.display_name || m.model_name || '').toLowerCase().includes(q)
       );
     }
-    // Sort by input_price ascending
-    list = [...list].sort((a, b) => (Number(a.input_price) || 0) - (Number(b.input_price) || 0));
+    list = [...list].sort((a, b) => {
+      if (!!a.is_per_call !== !!b.is_per_call) {
+        return a.is_per_call ? 1 : -1;
+      }
+      if (a.is_per_call) {
+        return (Number(a.fixed_price) || 0) - (Number(b.fixed_price) || 0);
+      }
+      return (Number(a.input_price) || 0) - (Number(b.input_price) || 0);
+    });
     return list;
   }, [enabledModels, vendor, search]);
 
+  const formatTokenPrice = (price) =>
+    price != null ? `${symbol}${(Number(price) * 1000 * rate).toFixed(4)}` : '-';
+
+  const formatPerCallPrice = (price) =>
+    price != null
+      ? `${symbol}${(Number(price) * rate).toFixed(4)}/${t('pricing.perCallUnit')}`
+      : '-';
+
   if (loading) {
     return (
       <div className="flex items-center justify-center min-h-[50vh]">
@@ -134,10 +149,10 @@ export default function Pricing() {
                     <span className="font-mono text-page">{m.display_name || m.model_name}</span>
                   </td>
                   <td className="px-5 py-3.5 text-right font-mono text-page-label">
-                    {m.input_price != null ? `${symbol}${(Number(m.input_price) * 1000 * rate).toFixed(4)}` : '-'}
+                    {m.is_per_call ? t('pricing.perCall') : formatTokenPrice(m.input_price)}
                   </td>
                   <td className="px-5 py-3.5 text-right font-mono text-page-label">
-                    {m.output_price != null ? `${symbol}${(Number(m.output_price) * 1000 * rate).toFixed(4)}` : '-'}
+                    {m.is_per_call ? formatPerCallPrice(m.fixed_price) : formatTokenPrice(m.output_price)}
                   </td>
                   <td className="px-5 py-3.5 text-center">
                     <span className={`inline-flex items-center gap-1.5 px-2 py-0.5 rounded-full text-xs border ${
diff --git a/src/pages/Topup.jsx b/src/pages/Topup.jsx
index 4563f23..f736a2a 100644
--- a/src/pages/Topup.jsx
+++ b/src/pages/Topup.jsx
@@ -28,6 +28,7 @@ export default function Topup() {
 
   // Online topup
   const [amount, setAmount] = useState('');
+  const [displayAmount, setDisplayAmount] = useState('');
   const [selectedPreset, setSelectedPreset] = useState(null);
   const [payAmount, setPayAmount] = useState(null);
   const [amountLoading, setAmountLoading] = useState(false);
@@ -50,6 +51,14 @@ export default function Topup() {
 
   const enableTopup = site?.enable_topup && topupInfo;
   const topupConfig = site?.topup_config;
+  const presetAmounts = topupInfo?.amount_options || [1, 5, 10, 20, 50, 100];
+  const minTopup = topupInfo?.min_topup || 1;
+  const payMethods = topupInfo?.pay_methods || [];
+  const enableOnline = topupInfo?.enable_online_topup;
+  const enableStripe = topupInfo?.enable_stripe_topup;
+  const enableCreem = topupInfo?.enable_creem_topup;
+  const enableCrypto = topupInfo?.enable_crypto_topup;
+  const hasAnyPayment = enableOnline || enableStripe || enableCreem || enableCrypto;
 
   const loadData = useCallback(async () => {
     setLoading(true);
@@ -71,6 +80,22 @@ export default function Topup() {
   const requestCount = usage?.request_count ?? user?.request_count ?? 0;
   const balanceDollars = quota / Q * rate;
 
+  const formatCurrencyAmount = useCallback((value) => {
+    if (value === '' || value == null || Number.isNaN(Number(value))) return '';
+    return Number(value).toFixed(2).replace(/\.?0+$/, '');
+  }, []);
+
+  const toDisplayAmount = useCallback((quotaAmount) => {
+    if (quotaAmount === '' || quotaAmount == null) return '';
+    return formatCurrencyAmount(Number(quotaAmount) * rate);
+  }, [formatCurrencyAmount, rate]);
+
+  const toQuotaAmount = useCallback((currencyAmount) => {
+    const numeric = Number.parseFloat(currencyAmount);
+    if (!Number.isFinite(numeric) || numeric <= 0) return '';
+    return Math.max(minTopup, Math.round(numeric / rate));
+  }, [minTopup, rate]);
+
   // Redeem
   const handleRedeem = async (e) => {
     e.preventDefault();
@@ -103,7 +128,8 @@ export default function Topup() {
   // Select preset
   const handlePreset = (val) => {
     setSelectedPreset(val);
-    setAmount(val);
+    setAmount(String(val));
+    setDisplayAmount(toDisplayAmount(val));
     calcAmount(val);
   };
 
@@ -291,15 +317,6 @@ export default function Topup() {
     setHistoryLoading(false);
   };
 
-  const presetAmounts = topupInfo?.amount_options || [1, 5, 10, 20, 50, 100];
-  const minTopup = topupInfo?.min_topup || 1;
-  const payMethods = topupInfo?.pay_methods || [];
-  const enableOnline = topupInfo?.enable_online_topup;
-  const enableStripe = topupInfo?.enable_stripe_topup;
-  const enableCreem = topupInfo?.enable_creem_topup;
-  const enableCrypto = topupInfo?.enable_crypto_topup;
-  const hasAnyPayment = enableOnline || enableStripe || enableCreem || enableCrypto;
-
   // Filter pay methods: EPay methods + Stripe-based methods go in the main payment buttons
   // Creem and Crypto get their own sections
   const epayAndStripeMethods = payMethods.filter(
@@ -373,7 +390,7 @@ export default function Topup() {
                       : 'glass-sm text-page-label hover:text-page hover:bg-page-surface-hover'
                   }`}
                 >
-                  {symbol}{Math.round(val * rate)}
+                  {symbol}{formatCurrencyAmount(val * rate)}
                 </button>
               ))}
             </div>
@@ -385,28 +402,50 @@ export default function Topup() {
             <div className="flex gap-3">
               <input
                 type="number"
-                value={amount ? Math.round(amount * rate) : ''}
+                value={displayAmount}
                 onChange={(e) => {
-                  const cnyVal = e.target.value;
-                  const usdVal = cnyVal ? Math.max(1, Math.ceil(cnyVal / rate)) : '';
-                  setAmount(usdVal);
+                  const currentValue = e.target.value;
+                  setDisplayAmount(currentValue);
                   setSelectedPreset(null);
+                  const quotaAmount = toQuotaAmount(currentValue);
+                  setAmount(quotaAmount === '' ? '' : String(quotaAmount));
+                  calcAmount(quotaAmount);
                 }}
                 onBlur={(e) => {
-                  const cnyVal = e.target.value;
-                  const usdVal = cnyVal ? Math.max(1, Math.ceil(cnyVal / rate)) : '';
-                  calcAmount(usdVal);
+                  const quotaAmount = toQuotaAmount(e.target.value);
+                  if (quotaAmount === '') {
+                    setDisplayAmount('');
+                    setAmount('');
+                    setPayAmount(null);
+                    return;
+                  }
+                  setAmount(String(quotaAmount));
+                  setDisplayAmount(toDisplayAmount(quotaAmount));
+                  calcAmount(quotaAmount);
                 }}
-                min={Math.round(minTopup * rate)}
-                placeholder={t('topup.amountPlaceholder', { min: Math.round(minTopup * rate) })}
+                min={minTopup * rate}
+                step="0.01"
+                placeholder={t('topup.amountPlaceholder', { min: formatCurrencyAmount(minTopup * rate) })}
                 className="input flex-1"
               />
             </div>
+            <p className="text-xs text-page-muted mt-2">
+              {t('topup.customAmountHint')}
+            </p>
             {amountLoading ? (
               <p className="text-xs text-page-muted mt-2">{t('topup.calculating')}</p>
             ) : payAmount ? (
-              <p className="text-xs text-page-secondary mt-2">
-                {t('topup.payAmountLabel')}: <span className="text-page-success font-medium">¥{payAmount}</span>
+              <div className="mt-2 space-y-1 text-xs text-page-secondary">
+                <p>
+                  {t('topup.rechargeAmountLabel')}: <span className="text-page font-medium">{symbol}{displayAmount || toDisplayAmount(amount)}</span>
+                </p>
+                <p>
+                  {t('topup.payAmountLabel')}: <span className="text-page-success font-medium">{symbol}{payAmount}</span>
+                </p>
+              </div>
+            ) : amount ? (
+              <p className="text-xs text-page-muted mt-2">
+                {t('topup.rechargeAmountLabel')}: {symbol}{displayAmount || toDisplayAmount(amount)}
               </p>
             ) : null}
           </div>