diff --git a/package.json b/package.json
index 49ad049..a8913b2 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "kimiswitch",
   "private": true,
-  "version": "0.6.0",
+  "version": "0.6.2",
   "type": "module",
   "scripts": {
     "dev": "vite",
diff --git a/src-tauri/Cargo.lock b/src-tauri/Cargo.lock
index e8d0152..e937bc3 100644
--- a/src-tauri/Cargo.lock
+++ b/src-tauri/Cargo.lock
@@ -1958,7 +1958,7 @@ dependencies = [
 
 [[package]]
 name = "kimiswitch"
-version = "0.6.0"
+version = "0.6.2"
 dependencies = [
  "anyhow",
  "chrono",
diff --git a/src-tauri/Cargo.toml b/src-tauri/Cargo.toml
index a2ce5a9..7a8f359 100644
--- a/src-tauri/Cargo.toml
+++ b/src-tauri/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "kimiswitch"
-version = "0.6.0"
+version = "0.6.2"
 description = "Kimi Switch - model config manager"
 authors = ["you"]
 edition = "2021"
diff --git a/src-tauri/tauri.conf.json b/src-tauri/tauri.conf.json
index 39a6aa6..760f57e 100644
--- a/src-tauri/tauri.conf.json
+++ b/src-tauri/tauri.conf.json
@@ -1,6 +1,6 @@
 {
   "productName": "Kimi Switch",
-  "version": "0.6.0",
+  "version": "0.6.2",
   "identifier": "com.kimiswitch.app",
   "build": {
     "beforeDevCommand": "npm run dev",
diff --git a/src/App.tsx b/src/App.tsx
index 40f2a38..357a7fc 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -703,6 +703,11 @@ export default function App() {
               updateConfig((cfg) => {
                 const updated = { ...cfg.models };
                 for (const m of models) {
+                  // Skip if this model id already exists for the same provider
+                  const dup = Object.values(updated).some(
+                    (mm) => mm.provider === m.provider && mm.model === m.model && m.model !== ""
+                  );
+                  if (dup) continue;
                   let alias = m.alias;
                   let n = 1;
                   while (alias in updated) {
diff --git a/src/components/PresetPickerModal.tsx b/src/components/PresetPickerModal.tsx
index cbaef09..ee1ff83 100644
--- a/src/components/PresetPickerModal.tsx
+++ b/src/components/PresetPickerModal.tsx
@@ -2,7 +2,12 @@ import { useEffect, useMemo, useState } from "react";
 import { createPortal } from "react-dom";
 import { useTranslation } from "../i18n";
 import type { TranslationKey } from "../i18n/zh";
-import { providerPresets, type PresetCategory, type ProviderPreset } from "../config/providerPresets";
+import {
+  providerPresets,
+  type BillingMode,
+  type PresetCategory,
+  type ProviderPreset,
+} from "../config/providerPresets";
 import { ProviderIcon } from "./ProviderIcon";
 
 interface PresetPickerModalProps {
@@ -26,12 +31,26 @@ const CATEGORY_LABEL: Record<Exclude<PresetCategory, "custom">, TranslationKey>
   aggregator: "presetCategoryAggregator",
 };
 
+const BILLING_BADGE: Record<BillingMode, string> = {
+  subscription: "bg-violet-100 text-violet-700 dark:bg-violet-500/15 dark:text-violet-400",
+  pay_as_you_go: "bg-slate-200 text-slate-600 dark:bg-slate-500/15 dark:text-slate-400",
+};
+
+const BILLING_LABEL: Record<BillingMode, TranslationKey> = {
+  subscription: "billingBadgeSubscription",
+  pay_as_you_go: "billingBadgePayAsYouGo",
+};
+
 type SortMode = "original" | "alpha";
+type BillingTab = "all" | BillingMode;
+
+const BILLING_TAB_ORDER: BillingTab[] = ["subscription", "pay_as_you_go", "all"];
 
 export function PresetPickerModal({ open, onClose, onSelect, onCustom }: PresetPickerModalProps) {
   const { t } = useTranslation();
   const [query, setQuery] = useState("");
   const [sort, setSort] = useState<SortMode>("original");
+  const [billingTab, setBillingTab] = useState<BillingTab>("all");
 
   // Esc to close
   useEffect(() => {
@@ -58,15 +77,31 @@ export function PresetPickerModal({ open, onClose, onSelect, onCustom }: PresetP
     if (open) {
       setQuery("");
       setSort("original");
+      setBillingTab("all");
     }
   }, [open]);
 
+  // Counts per billing tab — shown in the tab labels so users see how many
+  // presets are in each bucket without having to click through.
+  const billingCounts = useMemo(() => {
+    let sub = 0;
+    let payg = 0;
+    for (const p of providerPresets) {
+      if (p.billingMode === "subscription") sub++;
+      else payg++;
+    }
+    return { subscription: sub, pay_as_you_go: payg, all: sub + payg };
+  }, []);
+
   const presetName = (p: ProviderPreset) =>
     p.nameKey ? t(p.nameKey as TranslationKey) : p.name;
 
   const visible = useMemo(() => {
     const q = query.trim().toLowerCase();
     let list = providerPresets;
+    if (billingTab !== "all") {
+      list = list.filter((p) => p.billingMode === billingTab);
+    }
     if (q) {
       list = list.filter(
         (p) => p.id.toLowerCase().includes(q) || presetName(p).toLowerCase().includes(q)
@@ -77,7 +112,7 @@ export function PresetPickerModal({ open, onClose, onSelect, onCustom }: PresetP
     }
     return list;
     // eslint-disable-next-line react-hooks/exhaustive-deps
-  }, [query, sort, t]);
+  }, [query, sort, billingTab, t]);
 
   if (!open) return null;
 
@@ -110,39 +145,67 @@ export function PresetPickerModal({ open, onClose, onSelect, onCustom }: PresetP
           </button>
         </div>
 
-        {/* Search + sort */}
-        <div className="flex items-center gap-2 border-b border-border px-5 py-3">
-          <input
-            type="text"
-            value={query}
-            onChange={(e) => setQuery(e.target.value)}
-            placeholder={t("presetSearchPlaceholder")}
-            autoFocus
-            className="h-8 flex-1 rounded border border-border bg-input px-2 text-sm text-content-primary focus:outline-none focus:ring-2 focus:ring-blue-500"
-          />
-          <div className="flex items-center rounded border border-border bg-input p-0.5">
-            <button
-              type="button"
-              onClick={() => setSort("original")}
-              className={`px-2 py-1 text-xs rounded transition-colors ${
-                sort === "original"
-                  ? "bg-blue-600 text-white"
-                  : "text-content-muted hover:text-content-primary"
-              }`}
-            >
-              {t("presetSortOriginal")}
-            </button>
-            <button
-              type="button"
-              onClick={() => setSort("alpha")}
-              className={`px-2 py-1 text-xs rounded transition-colors ${
-                sort === "alpha"
-                  ? "bg-blue-600 text-white"
-                  : "text-content-muted hover:text-content-primary"
-              }`}
-            >
-              {t("presetSortAlpha")}
-            </button>
+        {/* Billing-mode tabs + search + sort */}
+        <div className="flex flex-col gap-2 border-b border-border px-5 py-3">
+          <div className="flex items-center bg-input border border-border rounded p-0.5 self-start">
+            {BILLING_TAB_ORDER.map((tab) => {
+              const labelKey: TranslationKey =
+                tab === "all"
+                  ? "billingTabAll"
+                  : tab === "subscription"
+                    ? "billingTabSubscription"
+                    : "billingTabPayAsYouGo";
+              const count = billingCounts[tab];
+              const active = billingTab === tab;
+              return (
+                <button
+                  key={tab}
+                  type="button"
+                  onClick={() => setBillingTab(tab)}
+                  className={`px-2.5 py-1 text-xs rounded transition-colors ${
+                    active
+                      ? "bg-blue-600 text-white"
+                      : "text-content-muted hover:text-content-primary"
+                  }`}
+                >
+                  {t(labelKey)} ({count})
+                </button>
+              );
+            })}
+          </div>
+          <div className="flex items-center gap-2">
+            <input
+              type="text"
+              value={query}
+              onChange={(e) => setQuery(e.target.value)}
+              placeholder={t("presetSearchPlaceholder")}
+              autoFocus
+              className="h-8 flex-1 rounded border border-border bg-input px-2 text-sm text-content-primary focus:outline-none focus:ring-2 focus:ring-blue-500"
+            />
+            <div className="flex items-center rounded border border-border bg-input p-0.5">
+              <button
+                type="button"
+                onClick={() => setSort("original")}
+                className={`px-2 py-1 text-xs rounded transition-colors ${
+                  sort === "original"
+                    ? "bg-blue-600 text-white"
+                    : "text-content-muted hover:text-content-primary"
+                }`}
+              >
+                {t("presetSortOriginal")}
+              </button>
+              <button
+                type="button"
+                onClick={() => setSort("alpha")}
+                className={`px-2 py-1 text-xs rounded transition-colors ${
+                  sort === "alpha"
+                    ? "bg-blue-600 text-white"
+                    : "text-content-muted hover:text-content-primary"
+                }`}
+              >
+                {t("presetSortAlpha")}
+              </button>
+            </div>
           </div>
         </div>
 
@@ -168,13 +231,20 @@ export function PresetPickerModal({ open, onClose, onSelect, onCustom }: PresetP
                   <div className="w-full truncate text-sm font-medium text-content-primary">
                     {presetName(p)}
                   </div>
-                  {p.category !== "custom" && (
+                  <div className="flex flex-wrap gap-1">
+                    {p.category !== "custom" && (
+                      <span
+                        className={`rounded px-1.5 py-0.5 text-[10px] font-medium ${CATEGORY_BADGE[p.category]}`}
+                      >
+                        {t(CATEGORY_LABEL[p.category])}
+                      </span>
+                    )}
                     <span
-                      className={`rounded px-1.5 py-0.5 text-[10px] font-medium ${CATEGORY_BADGE[p.category]}`}
+                      className={`rounded px-1.5 py-0.5 text-[10px] font-medium ${BILLING_BADGE[p.billingMode]}`}
                     >
-                      {t(CATEGORY_LABEL[p.category])}
+                      {t(BILLING_LABEL[p.billingMode])}
                     </span>
-                  )}
+                  </div>
                 </button>
               ))}
             </div>
diff --git a/src/components/ProviderEdit.tsx b/src/components/ProviderEdit.tsx
index 42e9ad1..be5bff0 100644
--- a/src/components/ProviderEdit.tsx
+++ b/src/components/ProviderEdit.tsx
@@ -459,6 +459,9 @@ function ModelMapping({
         provider,
       });
       setDiscovered(result);
+      // Auto-select models that already exist in the current provider's list
+      const existingIds = new Set(models.filter((m) => m.model).map((m) => m.model));
+      setSelected(new Set(result.filter((dm) => existingIds.has(dm.id)).map((dm) => dm.id)));
     } catch (err) {
       setDiscoverError(err instanceof Error ? err.message : String(err));
     } finally {
@@ -477,9 +480,11 @@ function ModelMapping({
 
   const handleAddSelected = () => {
     if (!discovered || selected.size === 0) return;
+    const existingIds = new Set(models.filter((m) => m.model).map((m) => m.model));
     const toAdd: Model[] = [];
     for (const dm of discovered) {
       if (!selected.has(dm.id)) continue;
+      if (existingIds.has(dm.id)) continue; // skip models already in this provider
       const safeProvider = provider.name.replace(/\//g, "-");
       const safeModelId = dm.id.replace(/\//g, "-");
       const alias = `${safeProvider}/${safeModelId}`;
@@ -555,7 +560,9 @@ function ModelMapping({
             {t("fetchEnableThinking")}
           </label>
           <div className="max-h-48 overflow-auto space-y-1">
-            {discovered.map((m) => (
+            {discovered.map((m) => {
+              const exists = models.some((mm) => mm.model === m.id);
+              return (
               <label
                 key={m.id}
                 className="flex items-center gap-2 text-sm cursor-pointer hover:bg-input p-1.5 rounded"
@@ -569,8 +576,12 @@ function ModelMapping({
                 {m.display_name && (
                   <span className="text-content-muted">({m.display_name})</span>
                 )}
+                {exists && (
+                  <span className="ml-auto text-[10px] text-emerald-500 shrink-0">{t("alreadyAdded")}</span>
+                )}
               </label>
-            ))}
+              );
+            })}
           </div>
           <button
             type="button"
diff --git a/src/components/dashboard/DashboardPage.tsx b/src/components/dashboard/DashboardPage.tsx
index e2cb9f8..999a9ce 100644
--- a/src/components/dashboard/DashboardPage.tsx
+++ b/src/components/dashboard/DashboardPage.tsx
@@ -5,6 +5,7 @@ import { useTranslation } from "../../i18n";
 import { fmtInt, fmtPct, fmtTime, fmtTokens, fmtUsd } from "../../lib/dashboard-format";
 import { DailyBars } from "./DailyBars";
 import { Heatmap } from "./Heatmap";
+import { TrendLineChart } from "./TrendLineChart";
 
 const RANGES: DashboardRange[] = ["today", "7d", "30d", "all"];
 
@@ -12,18 +13,20 @@ function Card({
   title,
   subtitle,
   children,
+  className,
 }: {
   title: string;
   subtitle?: string;
   children: ReactNode;
+  className?: string;
 }) {
   return (
-    <div className="flex flex-col rounded-xl border border-border bg-panel">
+    <div className={`flex flex-col rounded-xl border border-border bg-panel ${className ?? ""}`}>
       <div className="border-b border-border px-4 py-2.5 flex items-baseline justify-between">
         <h3 className="text-sm font-medium text-content-primary">{title}</h3>
         {subtitle && <span className="text-xs text-content-muted">{subtitle}</span>}
       </div>
-      <div className="flex-1 p-4">{children}</div>
+      <div className="flex flex-1 flex-col p-4">{children}</div>
     </div>
   );
 }
@@ -45,7 +48,7 @@ export function DashboardPage() {
   const { range, changeRange, data, loading, error, refresh } = useDashboard();
   const [showAllModels, setShowAllModels] = useState(false);
   const [recentPage, setRecentPage] = useState(1);
-  const [trendTab, setTrendTab] = useState<"model" | "provider">("model");
+  const [trendTab, setTrendTab] = useState<"daily" | "model" | "provider">("daily");
 
   const RANGE_LABELS: Record<DashboardRange, string> = {
     today: t("rangeToday"),
@@ -187,18 +190,29 @@ export function DashboardPage() {
         ))}
       </div>
 
-      {/* Heatmap — full-year strip, fixed-size cells, centered */}
+      {/* Heatmap — full row */}
       <Card title={t("cardHeatmap")} subtitle={t("cardHeatmapSub")}>
         <Heatmap heatmap={heatmap} />
       </Card>
 
-      {/* Charts + Model side table */}
-      <div className="grid gap-4 lg:grid-cols-[1.2fr_1fr]">
+      {/* Usage-trend tabs + Model table side by side */}
+      <div className="grid items-stretch gap-4 lg:grid-cols-[1.2fr_1fr]">
         {/* Usage-trend tab container */}
         <div className="flex flex-col rounded-xl border border-border bg-panel">
           {/* Tab bar header */}
           <div className="flex items-end justify-between border-b border-border px-2">
             <div className="flex gap-1">
+              <button
+                type="button"
+                onClick={() => setTrendTab("daily")}
+                className={`px-3 py-2 -mb-px border-b-2 text-sm font-medium transition-colors ${
+                  trendTab === "daily"
+                    ? "border-blue-500 text-content-primary"
+                    : "border-transparent text-content-muted hover:text-content-primary"
+                }`}
+              >
+                {t("tabDailyTrend")}
+              </button>
               <button
                 type="button"
                 onClick={() => setTrendTab("model")}
@@ -223,21 +237,29 @@ export function DashboardPage() {
               </button>
             </div>
             <span className="pb-2 text-xs text-content-muted">
-              {daily.length > 30
-                ? t("cardDailyTrendSubCapped", { n: daily.length })
-                : t("cardDailyTrendSub", { n: daily.length })}
+              {trendTab === "daily"
+                ? t("trendLineSub", { n: trendDaily.length })
+                : daily.length > 30
+                  ? t("cardDailyTrendSubCapped", { n: daily.length })
+                  : t("cardDailyTrendSub", { n: daily.length })}
             </span>
           </div>
           {/* Active tab content */}
-          <div className="flex-1 p-4">
-            <div className="h-full min-h-[240px]">
-              <DailyBars
-                daily={trendDaily}
-                dimension={trendTab}
-                names={trendTab === "model" ? modelNames : providerNames}
-                unknownProviderLabel={t("providerUnknown")}
-              />
-            </div>
+          <div className="flex flex-1 flex-col p-4">
+            {trendTab === "daily" ? (
+              <div className="flex-1 min-h-[240px]">
+                <TrendLineChart daily={trendDaily} />
+              </div>
+            ) : (
+              <div className="flex-1 min-h-[240px]">
+                <DailyBars
+                  daily={trendDaily}
+                  dimension={trendTab}
+                  names={trendTab === "model" ? modelNames : providerNames}
+                  unknownProviderLabel={t("providerUnknown")}
+                />
+              </div>
+            )}
           </div>
         </div>
 
@@ -246,7 +268,7 @@ export function DashboardPage() {
             <div className="py-8 text-center text-sm text-content-muted">{t("noData")}</div>
           ) : (
             <div className="max-h-[360px] overflow-auto">
-              <table className="w-full text-sm">
+              <table className="w-full text-sm border-collapse">
                 <thead className="sticky top-0 bg-panel">
                   <tr className="text-left text-xs text-content-muted border-b border-border">
                     <th className="pb-2 pr-3 font-normal">{t("colModel")}</th>
@@ -260,7 +282,7 @@ export function DashboardPage() {
                   {visibleModels.map((m) => (
                     <tr
                       key={m.model}
-                      className="border-b border-border/50 hover:bg-hover"
+                      className="border-b border-border hover:bg-hover"
                     >
                       <td className="py-2 pr-3">
                         <div className="flex items-center gap-2">
@@ -273,10 +295,10 @@ export function DashboardPage() {
                                   : "#6b7280",
                             }}
                           />
-                          <div className="min-w-0">
-                            <div className="text-content-primary whitespace-nowrap">{m.modelDisplay || m.model}</div>
+                          <div className="flex items-center gap-1.5 min-w-0">
+                            <span className="text-content-primary whitespace-nowrap truncate">{m.modelDisplay || m.model}</span>
                             {m.costEstimated && (
-                              <span className="text-[10px] text-yellow-600">{t("estimate")}</span>
+                              <span className="text-[10px] text-yellow-600 shrink-0">({t("estimate")})</span>
                             )}
                           </div>
                         </div>
@@ -316,8 +338,8 @@ export function DashboardPage() {
           <div className="py-8 text-center text-sm text-content-muted">{t("noData")}</div>
         ) : (
           <>
-            <div className="overflow-auto">
-              <table className="w-full text-sm">
+            <div className="overflow-auto max-h-[860px]">
+              <table className="w-full text-sm border-collapse">
                 <thead className="sticky top-0 bg-panel">
                   <tr className="text-left text-xs text-content-muted border-b border-border">
                     <th className="pb-2 pr-4 font-normal">{t("colTime")}</th>
@@ -330,7 +352,7 @@ export function DashboardPage() {
                 </thead>
                 <tbody>
                   {recentPageRows.map((r, i) => (
-                    <tr key={recentStart + i} className="border-b border-border/50 hover:bg-hover">
+                    <tr key={recentStart + i} className="border-b border-border hover:bg-hover">
                       <td className="py-1.5 pr-4 text-content-muted whitespace-nowrap">
                         {fmtTime(r.time)}
                       </td>
@@ -398,20 +420,23 @@ export function DashboardPage() {
         )}
       </Card>
 
-      {/* Attribution footer */}
+      {/* Footer — meta + attribution at the end of the content flow */}
       <div className="text-xs text-content-muted pb-2">
-        {t("footerScanned", { n: data.meta.filesScanned, m: fmtInt(data.meta.recordCount) })} ·{" "}
-        {data.meta.home}
-        <br />
-        {t("dashboardAttribution")}{" "}
-        <button
-          type="button"
-          onClick={() => openUrl("https://github.com/JochenYang/kimicode-dashboard")}
-          className="text-blue-500 hover:text-blue-400 underline bg-transparent p-0 border-0 cursor-pointer"
-        >
-          kimicode-dashboard
-        </button>{" "}
-        {t("attributionSuffix")}
+        <div>
+          {t("footerScanned", { n: data.meta.filesScanned, m: fmtInt(data.meta.recordCount) })} ·{" "}
+          {data.meta.home}
+        </div>
+        <div className="mt-0.5">
+          {t("dashboardAttribution")}{" "}
+          <button
+            type="button"
+            onClick={() => openUrl("https://github.com/JochenYang/kimicode-dashboard")}
+            className="text-blue-500 hover:text-blue-400 underline bg-transparent p-0 border-0 cursor-pointer"
+          >
+            kimicode-dashboard
+          </button>{" "}
+          {t("attributionSuffix")}
+        </div>
       </div>
     </div>
   );
diff --git a/src/components/dashboard/Heatmap.tsx b/src/components/dashboard/Heatmap.tsx
index 4ec8ef8..2c14d53 100644
--- a/src/components/dashboard/Heatmap.tsx
+++ b/src/components/dashboard/Heatmap.tsx
@@ -19,7 +19,7 @@ const LEVEL_BG = [
 const DOW_LABELS_ZH = ["日", "一", "二", "三", "四", "五", "六"];
 const DOW_LABELS_EN = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"];
 
-const CELL = 12; // px
+const CELL = 16; // px
 const GAP = 3; // px
 const LABEL_W = 28; // dow label column width
 
diff --git a/src/components/dashboard/TrendLineChart.tsx b/src/components/dashboard/TrendLineChart.tsx
new file mode 100644
index 0000000..c64de41
--- /dev/null
+++ b/src/components/dashboard/TrendLineChart.tsx
@@ -0,0 +1,369 @@
+import { useMemo, useState, type MouseEvent } from "react";
+import { useTranslation } from "../../i18n";
+import { fmtTokens } from "../../lib/dashboard-format";
+import type { DailyRow } from "../../types/dashboard";
+
+interface TrendLineChartProps {
+  /** Per-day totals, already capped to the desired window by the caller. */
+  daily: DailyRow[];
+}
+
+const W = 800;
+const H = 130;
+const PAD_L = 56;
+const PAD_R = 56;
+const PAD_T = 10;
+const PAD_B = 22;
+const PLOT_W = W - PAD_L - PAD_R;
+const PLOT_H = H - PAD_T - PAD_B;
+
+const COLOR_TOKENS = "#3b82f6"; // blue
+const COLOR_CACHE = "#22c55e"; // green
+const COLOR_REQUESTS = "#f97316"; // orange
+
+/** Human-friendly token count for axis labels (K / M / B). */
+function fmtTokenAxis(value: number): string {
+  if (value >= 1_000_000_000) return `${(value / 1_000_000_000).toFixed(1)}B`;
+  if (value >= 1_000_000) return `${(value / 1_000_000).toFixed(1)}M`;
+  if (value >= 1_000) return `${(value / 1_000).toFixed(0)}K`;
+  return String(Math.round(value));
+}
+
+function fmtInt(n: number): string {
+  return Math.round(n).toLocaleString();
+}
+
+function niceMax(value: number): number {
+  if (value <= 0) return 1;
+  const exp = Math.floor(Math.log10(value));
+  const base = Math.pow(10, exp);
+  const norm = value / base;
+  let nice: number;
+  if (norm <= 1) nice = 1;
+  else if (norm <= 2) nice = 2;
+  else if (norm <= 5) nice = 5;
+  else nice = 10;
+  return nice * base;
+}
+
+export function TrendLineChart({ daily }: TrendLineChartProps) {
+  const { t } = useTranslation();
+  const [showRequests, setShowRequests] = useState(true);
+  const [hoverIndex, setHoverIndex] = useState<number | null>(null);
+
+  const maxTokens = useMemo(() => {
+    if (!daily?.length) return 1;
+    return niceMax(Math.max(...daily.map((d) => d.totalTokens || 0), 1));
+  }, [daily]);
+
+  const maxRequests = useMemo(() => {
+    if (!daily?.length) return 1;
+    return niceMax(Math.max(...daily.map((d) => d.requests || 0), 1));
+  }, [daily]);
+
+  const n = daily?.length ?? 0;
+  const stepX = n > 1 ? PLOT_W / (n - 1) : PLOT_W;
+
+  const pointX = (i: number) => (n > 1 ? PAD_L + i * stepX : PAD_L + PLOT_W / 2);
+  const pointYTokens = (v: number) => PAD_T + PLOT_H - (v / maxTokens) * PLOT_H;
+  // Cache hit rate is a fraction 0-1 (see fmtPct); map onto the right 0-100% axis.
+  const pointYCache = (v: number) => PAD_T + PLOT_H - Math.max(0, Math.min(1, v)) * PLOT_H;
+  const pointYReq = (v: number) => PAD_T + PLOT_H - (v / maxRequests) * PLOT_H;
+
+  const pathTokens = useMemo(() => {
+    if (!daily?.length) return "";
+    return daily
+      .map((d, i) => `${i === 0 ? "M" : "L"} ${pointX(i)} ${pointYTokens(d.totalTokens || 0)}`)
+      .join(" ");
+  }, [daily, maxTokens]);
+
+  const pathCache = useMemo(() => {
+    if (!daily?.length) return "";
+    return daily
+      .map((d, i) => `${i === 0 ? "M" : "L"} ${pointX(i)} ${pointYCache(d.cacheHitRate || 0)}`)
+      .join(" ");
+  }, [daily]);
+
+  const pathRequests = useMemo(() => {
+    if (!daily?.length) return "";
+    return daily
+      .map((d, i) => `${i === 0 ? "M" : "L"} ${pointX(i)} ${pointYReq(d.requests || 0)}`)
+      .join(" ");
+  }, [daily, maxRequests]);
+
+  const areaTokens = useMemo(() => {
+    if (!daily?.length) return "";
+    const lastX = pointX(daily.length - 1);
+    return (
+      pathTokens +
+      ` L ${lastX} ${PAD_T + PLOT_H} L ${PAD_L} ${PAD_T + PLOT_H} Z`
+    );
+  }, [pathTokens, daily]);
+
+  // X-axis ticks: show every ~5 days (plus the first and last) to avoid overlap.
+  const xTicks = useMemo(() => {
+    if (!daily?.length) return [];
+    if (n <= 6) return daily.map((_, i) => i);
+    const step = Math.max(1, Math.round(n / 6));
+    const set = new Set<number>([0, n - 1]);
+    for (let i = step; i < n - 1; i += step) set.add(i);
+    return Array.from(set).sort((a, b) => a - b);
+  }, [daily, n]);
+
+  // Hover handling
+  const onMove = (e: MouseEvent<SVGSVGElement>) => {
+    if (!daily?.length) return;
+    const rect = e.currentTarget.getBoundingClientRect();
+    const scale = W / rect.width;
+    const x = (e.clientX - rect.left) * scale - PAD_L;
+    if (x < 0 || x > PLOT_W) {
+      setHoverIndex(null);
+      return;
+    }
+    const idx = Math.max(0, Math.min(n - 1, Math.round(x / stepX)));
+    setHoverIndex(idx);
+  };
+
+  const onLeave = () => setHoverIndex(null);
+
+  if (!daily?.length) {
+    return (
+      <div className="flex h-32 items-center justify-center text-sm text-content-muted">
+        {t("trendLineNoData")}
+      </div>
+    );
+  }
+
+  const hover = hoverIndex != null ? daily[hoverIndex] : null;
+
+  return (
+    <div className="flex h-full flex-col gap-2">
+      {/* Legend + toggle */}
+      <div className="flex flex-wrap items-center justify-between gap-2">
+        <div className="flex flex-wrap items-center gap-x-3 gap-y-1 text-[11px] text-content-muted">
+          <span className="flex items-center gap-1.5">
+            <span className="inline-block h-2.5 w-2.5 rounded-sm" style={{ backgroundColor: COLOR_TOKENS }} />
+            {t("trendLineLegendTokens")}
+          </span>
+          <span className="flex items-center gap-1.5">
+            <span className="inline-block h-2.5 w-2.5 rounded-sm" style={{ backgroundColor: COLOR_CACHE }} />
+            {t("trendLineLegendCacheHit")}
+          </span>
+          {showRequests && (
+            <span className="flex items-center gap-1.5">
+              <span className="inline-block h-2.5 w-2.5 rounded-sm" style={{ backgroundColor: COLOR_REQUESTS }} />
+              {t("trendLineLegendRequests")}
+            </span>
+          )}
+        </div>
+        <label className="flex items-center gap-1.5 text-[11px] text-content-muted cursor-pointer select-none">
+          <input
+            type="checkbox"
+            checked={showRequests}
+            onChange={(e) => setShowRequests(e.target.checked)}
+            className="h-3 w-3 accent-blue-500"
+          />
+          {t("trendLineShowRequests")}
+        </label>
+      </div>
+
+      {/* Chart */}
+      <div className="relative flex-1 min-h-0">
+        <svg
+          viewBox={`0 0 ${W} ${H}`}
+          className="w-full h-full"
+          preserveAspectRatio="none"
+          onMouseMove={onMove}
+          onMouseLeave={onLeave}
+        >
+          {/* Gradient definitions */}
+          <defs>
+            <linearGradient id="tokenAreaGrad" x1="0" y1="0" x2="0" y2="1">
+              <stop offset="0%" stopColor={COLOR_TOKENS} stopOpacity="0.28" />
+              <stop offset="100%" stopColor={COLOR_TOKENS} stopOpacity="0.02" />
+            </linearGradient>
+          </defs>
+
+          {/* Y-axis grid lines only (labels rendered as HTML overlay below) */}
+          {[0, 0.25, 0.5, 0.75, 1].map((p) => {
+            const y = PAD_T + PLOT_H * (1 - p);
+            return (
+              <line
+                key={p}
+                x1={PAD_L}
+                y1={y}
+                x2={W - PAD_R}
+                y2={y}
+                stroke="currentColor"
+                className="text-border"
+                strokeWidth={1}
+                strokeDasharray={p === 0 ? "" : "2 3"}
+                opacity={p === 0 ? 0.9 : 0.4}
+              />
+            );
+          })}
+
+          {/* Area fill for tokens */}
+          <path d={areaTokens} fill="url(#tokenAreaGrad)" />
+
+          {/* Tokens line (area + line) */}
+          <path
+            d={pathTokens}
+            fill="none"
+            stroke={COLOR_TOKENS}
+            strokeWidth={2}
+            strokeLinejoin="round"
+            strokeLinecap="round"
+          />
+
+          {/* Cache hit line */}
+          <path
+            d={pathCache}
+            fill="none"
+            stroke={COLOR_CACHE}
+            strokeWidth={1.5}
+            strokeLinejoin="round"
+            strokeLinecap="round"
+          />
+
+          {/* Requests line (optional) */}
+          {showRequests && (
+            <path
+              d={pathRequests}
+              fill="none"
+              stroke={COLOR_REQUESTS}
+              strokeWidth={1.25}
+              strokeLinejoin="round"
+              strokeLinecap="round"
+            />
+          )}
+
+          {/* Hover crosshair + dot */}
+          {hover && (
+            <g pointerEvents="none">
+              <line
+                x1={pointX(hoverIndex!)}
+                y1={PAD_T}
+                x2={pointX(hoverIndex!)}
+                y2={PAD_T + PLOT_H}
+                stroke="currentColor"
+                className="text-content-muted"
+                strokeWidth={1}
+                strokeDasharray="2 2"
+                opacity={0.5}
+              />
+              <circle
+                cx={pointX(hoverIndex!)}
+                cy={pointYTokens(hover.totalTokens || 0)}
+                r={3.5}
+                fill={COLOR_TOKENS}
+                stroke="currentColor"
+                className="text-panel"
+                strokeWidth={1.5}
+              />
+              <circle
+                cx={pointX(hoverIndex!)}
+                cy={pointYCache(hover.cacheHitRate || 0)}
+                r={3}
+                fill={COLOR_CACHE}
+                stroke="currentColor"
+                className="text-panel"
+                strokeWidth={1.5}
+              />
+              {showRequests && (
+                <circle
+                  cx={pointX(hoverIndex!)}
+                  cy={pointYReq(hover.requests || 0)}
+                  r={2.5}
+                  fill={COLOR_REQUESTS}
+                  stroke="currentColor"
+                  className="text-panel"
+                  strokeWidth={1.5}
+                />
+              )}
+            </g>
+          )}
+        </svg>
+
+        {/* Axis labels as HTML overlay (avoids SVG preserveAspectRatio="none" font distortion) */}
+        {/* Left Y-axis (tokens) */}
+        {[0, 0.25, 0.5, 0.75, 1].map((p) => {
+          const top = ((PAD_T + PLOT_H * (1 - p)) / H) * 100;
+          return (
+            <span
+              key={`yl-${p}`}
+              className="pointer-events-none absolute text-[10px] leading-none text-content-muted"
+              style={{
+                left: 0,
+                top: `${top}%`,
+                width: `${((PAD_L - 4) / W) * 100}%`,
+                textAlign: "right",
+                transform: "translateY(-50%)",
+              }}
+            >
+              {fmtTokenAxis(maxTokens * p)}
+            </span>
+          );
+        })}
+        {/* Right Y-axis (cache hit %) */}
+        {[0, 0.5, 1].map((p) => {
+          const top = ((PAD_T + PLOT_H * (1 - p)) / H) * 100;
+          return (
+            <span
+              key={`yr-${p}`}
+              className="pointer-events-none absolute text-[10px] leading-none text-content-muted"
+              style={{
+                right: 0,
+                top: `${top}%`,
+                width: `${((PAD_R - 4) / W) * 100}%`,
+                textAlign: "left",
+                transform: "translateY(-50%)",
+              }}
+            >
+              {Math.round(p * 100)}%
+            </span>
+          );
+        })}
+        {/* X-axis labels */}
+        {xTicks.map((i) => (
+          <span
+            key={`x-${i}`}
+            className="pointer-events-none absolute text-[10px] leading-none text-content-muted"
+            style={{
+              left: `${(pointX(i) / W) * 100}%`,
+              bottom: 0,
+              transform: "translateX(-50%)",
+            }}
+          >
+            {daily[i].date.slice(5)}
+          </span>
+        ))}
+
+        {/* Tooltip (HTML overlay for readability) */}
+        {hover && (
+          <div
+            className="pointer-events-none absolute z-10 rounded-md border border-border bg-panel px-2.5 py-1.5 text-[11px] text-content-primary shadow-xl"
+            style={{
+              left: `${(pointX(hoverIndex!) / W) * 100}%`,
+              top: 4,
+              transform: hoverIndex! > n / 2 ? "translateX(-100%)" : "translateX(8px)",
+            }}
+          >
+            <div className="font-medium">{hover.date}</div>
+            <div className="text-content-muted">
+              {t("trendLineLegendTokens")}: <span className="tabular-nums">{fmtTokens(hover.totalTokens)}</span>
+            </div>
+            <div className="text-content-muted">
+              {t("trendLineLegendCacheHit")}: <span className="tabular-nums">{(hover.cacheHitRate * 100).toFixed(1)}%</span>
+            </div>
+            {showRequests && (
+              <div className="text-content-muted">
+                {t("trendLineLegendRequests")}: <span className="tabular-nums">{fmtInt(hover.requests)}</span>
+              </div>
+            )}
+          </div>
+        )}
+      </div>
+    </div>
+  );
+}
diff --git a/src/config/providerPresets.ts b/src/config/providerPresets.ts
index 58f65a7..0fb958d 100644
--- a/src/config/providerPresets.ts
+++ b/src/config/providerPresets.ts
@@ -17,6 +17,9 @@ export type UsageKind =
   | "plan:zhipu"
   | "plan:minimax";
 
+/** Billing model for a preset. Drives the tab filter in PresetPickerModal. */
+export type BillingMode = "subscription" | "pay_as_you_go";
+
 /** Runtime set used to catch TS/Rust enum drift (see dev-assert below). */
 export const SUPPORTED_USAGE_KINDS: ReadonlySet<string> = new Set<UsageKind>([
   "balance:deepseek",
@@ -71,6 +74,12 @@ export interface ProviderPreset {
     /** Defaults to ["thinking"]. */
     capabilities?: string[];
   }>;
+  /**
+   * Billing model — drives the 套餐/按量 tab in PresetPickerModal.
+   * - "subscription": coding-plan / token-plan style subscription (quota-based)
+   * - "pay_as_you_go": per-token API billing
+   */
+  billingMode: BillingMode;
   /**
    * Billing/usage query kinds; omitted means "do not query".
    * Persisted to SQLite settings by the Rust side on save, never to
@@ -95,6 +104,7 @@ export const providerPresets: ProviderPreset[] = [
       { model: "claude-sonnet-4-5" },
       { model: "claude-haiku-4-5" },
     ],
+    billingMode: "pay_as_you_go",
   },
   {
     id: "kimi-coding",
@@ -111,6 +121,7 @@ export const providerPresets: ProviderPreset[] = [
       { model: "kimi-for-coding", displayName: "Kimi For Coding" },
       { model: "kimi-k2.7-code" },
     ],
+    billingMode: "subscription",
     usageKinds: ["plan:kimi_coding"],
   },
   {
@@ -127,6 +138,7 @@ export const providerPresets: ProviderPreset[] = [
       { model: "kimi-k2-thinking-turbo" },
       { model: "kimi-k2.6" },
     ],
+    billingMode: "pay_as_you_go",
   },
   {
     id: "deepseek",
@@ -138,12 +150,13 @@ export const providerPresets: ProviderPreset[] = [
     baseUrl: "https://api.deepseek.com/v1",
     icon: "deepseek",
     models: [{ model: "deepseek-chat" }, { model: "deepseek-reasoner" }],
+    billingMode: "pay_as_you_go",
     usageKinds: ["balance:deepseek"],
   },
   {
-    id: "zhipu",
-    name: "Zhipu GLM",
-    nameKey: "presetNameZhipu",
+    id: "zhipu-api",
+    name: "Zhipu GLM (API)",
+    nameKey: "presetNameZhipuApi",
     websiteUrl: "https://open.bigmodel.cn",
     category: "cn_official",
     providerType: "openai",
@@ -154,18 +167,51 @@ export const providerPresets: ProviderPreset[] = [
       { model: "glm-4.6" },
       { model: "glm-4.5-air" },
     ],
+    billingMode: "pay_as_you_go",
+  },
+  {
+    id: "zhipu-coding",
+    name: "Zhipu GLM Coding Plan",
+    nameKey: "presetNameZhipuCoding",
+    websiteUrl: "https://open.bigmodel.cn",
+    category: "cn_official",
+    providerType: "openai",
+    // Coding Plan endpoint is separate from the pay-as-you-go PaaS API.
+    baseUrl: "https://open.bigmodel.cn/api/coding/paas/v4",
+    icon: "zhipu",
+    models: [
+      { model: "glm-4.7" },
+      { model: "glm-4.6" },
+      { model: "glm-4.5-air" },
+    ],
+    billingMode: "subscription",
     usageKinds: ["plan:zhipu"],
   },
   {
-    id: "zai",
-    name: "z.ai",
-    nameKey: "presetNameZai",
+    id: "zai-api",
+    name: "z.ai (API)",
+    nameKey: "presetNameZaiApi",
     websiteUrl: "https://z.ai",
     category: "third_party",
     providerType: "openai",
     baseUrl: "https://api.z.ai/api/paas/v4",
     icon: "zhipu",
     models: [{ model: "glm-4.7" }, { model: "glm-4.6" }],
+    billingMode: "pay_as_you_go",
+  },
+  {
+    id: "zai-coding",
+    name: "z.ai Coding Plan",
+    nameKey: "presetNameZaiCoding",
+    websiteUrl: "https://z.ai",
+    category: "third_party",
+    providerType: "openai",
+    // Coding Plan endpoint (mirror of Zhipu GLM Coding Plan). If the path
+    // differs on z.ai, fall back to a known mirror.
+    baseUrl: "https://api.z.ai/api/coding/paas/v4",
+    icon: "zhipu",
+    models: [{ model: "glm-4.7" }, { model: "glm-4.6" }],
+    billingMode: "subscription",
     usageKinds: ["plan:zhipu"],
   },
   {
@@ -182,6 +228,7 @@ export const providerPresets: ProviderPreset[] = [
       { model: "qwen3-coder-plus" },
       { model: "qwen3.5-plus" },
     ],
+    billingMode: "pay_as_you_go",
   },
   {
     id: "minimax",
@@ -193,6 +240,25 @@ export const providerPresets: ProviderPreset[] = [
     baseUrl: "https://api.minimaxi.com/v1",
     icon: "minimax",
     models: [{ model: "MiniMax-M3" }, { model: "MiniMax-M2.7" }],
+    billingMode: "pay_as_you_go",
+    usageKinds: ["plan:minimax"],
+  },
+  {
+    id: "minimax-token-plan",
+    name: "MiniMax Token Plan",
+    nameKey: "presetNameMinimaxTokenPlan",
+    websiteUrl: "https://platform.minimaxi.com",
+    category: "cn_official",
+    providerType: "openai",
+    // Token Plan is sold against the same platform endpoint as the
+    // pay-as-you-go API — only the API key differs. The Rust detect
+    // routes api.minimaxi.com to plan:minimax, so this preset picks up
+    // the same query path; the `subscription` tag helps the user pick
+    // the right entry based on which key they hold.
+    baseUrl: "https://api.minimaxi.com/v1",
+    icon: "minimax",
+    models: [{ model: "MiniMax-M3" }, { model: "MiniMax-M2.7" }],
+    billingMode: "subscription",
     usageKinds: ["plan:minimax"],
   },
   {
@@ -205,6 +271,7 @@ export const providerPresets: ProviderPreset[] = [
     baseUrl: "https://api.stepfun.com/v1",
     icon: "stepfun",
     models: [{ model: "step-3.7-flash" }, { model: "step-3.5-flash" }],
+    billingMode: "pay_as_you_go",
     usageKinds: ["balance:stepfun"],
   },
   {
@@ -229,6 +296,7 @@ export const providerPresets: ProviderPreset[] = [
       },
     ],
     usageKinds: ["balance:siliconflow"],
+    billingMode: "pay_as_you_go",
   },
   {
     id: "novita",
@@ -251,6 +319,7 @@ export const providerPresets: ProviderPreset[] = [
       { model: "zai-org/glm-4.6" },
     ],
     usageKinds: ["balance:novita"],
+    billingMode: "pay_as_you_go",
   },
   {
     id: "openrouter",
@@ -273,6 +342,7 @@ export const providerPresets: ProviderPreset[] = [
       { model: "google/gemini-3-pro-preview" },
     ],
     usageKinds: ["balance:openrouter"],
+    billingMode: "pay_as_you_go",
   },
   {
     id: "openai",
@@ -288,6 +358,7 @@ export const providerPresets: ProviderPreset[] = [
       { model: "gpt-5.1-codex-max" },
       { model: "gpt-5-mini" },
     ],
+    billingMode: "pay_as_you_go",
   },
   {
     id: "google-genai",
@@ -303,6 +374,7 @@ export const providerPresets: ProviderPreset[] = [
       { model: "gemini-3-flash-preview" },
       { model: "gemini-2.5-flash" },
     ],
+    billingMode: "pay_as_you_go",
   },
   {
     id: "volcengine",
@@ -321,6 +393,50 @@ export const providerPresets: ProviderPreset[] = [
       },
       { model: "kimi-k2-250905", displayName: "Kimi K2" },
     ],
+    billingMode: "pay_as_you_go",
+  },
+  {
+    id: "opencode-go",
+    name: "OpenCode Go",
+    nameKey: "presetNameOpencodeGo",
+    // Referral link — supports the OpenCode project
+    websiteUrl: "https://opencode.ai/go?ref=DFCNADQCEM",
+    apiKeyUrl: "https://opencode.ai/zen/",
+    category: "third_party",
+    providerType: "openai",
+    baseUrl: "https://opencode.ai/zen/go/v1",
+    icon: "opencode",
+    models: [
+      { model: "grok-4.5", displayName: "Grok 4.5" },
+      { model: "glm-5.2", displayName: "GLM-5.2" },
+      { model: "glm-5.1", displayName: "GLM-5.1" },
+      { model: "kimi-k3", displayName: "Kimi K3" },
+      { model: "kimi-k2.7-code", displayName: "Kimi K2.7 Code" },
+      { model: "kimi-k2.6", displayName: "Kimi K2.6" },
+      { model: "deepseek-v4-pro", displayName: "DeepSeek V4 Pro" },
+      { model: "deepseek-v4-flash", displayName: "DeepSeek V4 Flash" },
+    ],
+    billingMode: "subscription",
+  },
+  {
+    id: "opencode-zen",
+    name: "OpenCode Zen",
+    nameKey: "presetNameOpencodeZen",
+    websiteUrl: "https://opencode.ai/zen/",
+    apiKeyUrl: "https://opencode.ai/zen/",
+    category: "third_party",
+    providerType: "openai",
+    baseUrl: "https://opencode.ai/zen/v1",
+    icon: "opencode",
+    models: [
+      { model: "claude-opus-5", displayName: "Claude Opus 5" },
+      { model: "claude-sonnet-5", displayName: "Claude Sonnet 5" },
+      { model: "gpt-5.5", displayName: "GPT 5.5" },
+      { model: "gemini-3.6-flash", displayName: "Gemini 3.6 Flash" },
+      { model: "grok-4.5", displayName: "Grok 4.5" },
+      { model: "deepseek-v4-pro", displayName: "DeepSeek V4 Pro" },
+    ],
+    billingMode: "pay_as_you_go",
   },
 ];
 
diff --git a/src/i18n/en.ts b/src/i18n/en.ts
index d527329..a565823 100644
--- a/src/i18n/en.ts
+++ b/src/i18n/en.ts
@@ -73,6 +73,7 @@ export const enTranslations: Record<TranslationKey, string> = {
   fetchingModels: "Fetching...",
   discoveredModels: "Discovered {count} models",
   addSelected: "Add selected",
+  alreadyAdded: "Added",
   displayName: "Display name",
   actualModel: "Actual model",
   contextSize: "Context size",
@@ -283,6 +284,7 @@ export const enTranslations: Record<TranslationKey, string> = {
   cardDailyTrendSubCapped: "Last 30 days · {n} days total",
   tabModelTrend: "Model usage trend",
   tabProviderTrend: "Provider–model usage trend",
+  tabDailyTrend: "Daily usage trend",
   providerUnknown: "Unknown provider",
   cardDailyTrendSub: "{n} days",
   cardModelUsage: "Model usage",
@@ -339,10 +341,13 @@ export const enTranslations: Record<TranslationKey, string> = {
   presetNameKimiCoding: "Kimi For Coding",
   presetNameMoonshot: "Moonshot Platform",
   presetNameDeepseek: "DeepSeek",
-  presetNameZhipu: "Zhipu GLM",
-  presetNameZai: "z.ai (Zhipu Global)",
+  presetNameZhipuApi: "Zhipu GLM (Pay-as-you-go)",
+  presetNameZhipuCoding: "Zhipu GLM Coding Plan",
+  presetNameZaiApi: "z.ai (Pay-as-you-go)",
+  presetNameZaiCoding: "z.ai Coding Plan",
   presetNameBailian: "Alibaba Bailian",
   presetNameMinimax: "MiniMax",
+  presetNameMinimaxTokenPlan: "MiniMax Token Plan",
   presetNameStepfun: "StepFun",
   presetNameSiliconflow: "SiliconFlow",
   presetNameNovita: "Novita AI",
@@ -350,6 +355,8 @@ export const enTranslations: Record<TranslationKey, string> = {
   presetNameOpenai: "OpenAI",
   presetNameGoogleGenai: "Google AI Studio",
   presetNameVolcengine: "Volcengine Ark",
+  presetNameOpencodeGo: "OpenCode Go",
+  presetNameOpencodeZen: "OpenCode Zen",
 
   // Provider usage
   usageBalance: "Balance",
@@ -363,4 +370,21 @@ export const enTranslations: Record<TranslationKey, string> = {
   usageResetIn: "resets in {time}",
   usageResetDone: "reset",
   usageLoading: "Querying…",
+
+  // Billing mode (subscription / pay-as-you-go)
+  billingTabSubscription: "Subscription",
+  billingTabPayAsYouGo: "Pay-as-you-go",
+  billingTabAll: "All",
+  billingBadgeSubscription: "Plan",
+  billingBadgePayAsYouGo: "PAYG",
+
+  // Usage trend line chart
+  trendLineTitle: "Usage Trend",
+  trendLineSub: "last {n} days",
+  trendLineLegendTokens: "Token usage",
+  trendLineLegendCacheHit: "Cache hit rate",
+  trendLineLegendRequests: "Requests",
+  trendLineShowRequests: "Show requests",
+  trendLineTooltip: "{date}\nTokens: {tokens}\nCache hit: {cache}\nRequests: {req}",
+  trendLineNoData: "No data",
 };
diff --git a/src/i18n/zh.ts b/src/i18n/zh.ts
index e400227..e7692be 100644
--- a/src/i18n/zh.ts
+++ b/src/i18n/zh.ts
@@ -71,6 +71,7 @@ export const zhTranslations = {
   fetchingModels: "获取中...",
   discoveredModels: "发现 {count} 个模型",
   addSelected: "添加选中的",
+  alreadyAdded: "已添加",
   displayName: "显示名称",
   actualModel: "实际请求模型",
   contextSize: "上下文长度",
@@ -278,6 +279,7 @@ export const zhTranslations = {
   cardDailyTrendSubCapped: "近 30 天 · 共 {n} 天",
   tabModelTrend: "模型用量趋势",
   tabProviderTrend: "供应商模型用量趋势",
+  tabDailyTrend: "每日用量趋势",
   providerUnknown: "未知供应商",
   cardDailyTrendSub: "共 {n} 天",
   cardModelUsage: "模型用量",
@@ -334,10 +336,13 @@ export const zhTranslations = {
   presetNameKimiCoding: "Kimi For Coding",
   presetNameMoonshot: "Moonshot 平台",
   presetNameDeepseek: "DeepSeek",
-  presetNameZhipu: "智谱 GLM",
-  presetNameZai: "z.ai（智谱海外）",
+  presetNameZhipuApi: "智谱 GLM（按量）",
+  presetNameZhipuCoding: "智谱 GLM Coding Plan",
+  presetNameZaiApi: "z.ai（按量）",
+  presetNameZaiCoding: "z.ai Coding Plan",
   presetNameBailian: "阿里百炼",
   presetNameMinimax: "MiniMax",
+  presetNameMinimaxTokenPlan: "MiniMax Token Plan",
   presetNameStepfun: "阶跃星辰",
   presetNameSiliconflow: "硅基流动",
   presetNameNovita: "Novita AI",
@@ -345,6 +350,8 @@ export const zhTranslations = {
   presetNameOpenai: "OpenAI 官方",
   presetNameGoogleGenai: "Google AI Studio",
   presetNameVolcengine: "火山方舟",
+  presetNameOpencodeGo: "OpenCode Go",
+  presetNameOpencodeZen: "OpenCode Zen",
 
   // Provider usage
   usageBalance: "余额",
@@ -358,6 +365,23 @@ export const zhTranslations = {
   usageResetIn: "{time} 后重置",
   usageResetDone: "已重置",
   usageLoading: "查询中…",
+
+  // Billing mode (套餐 / 按量)
+  billingTabSubscription: "套餐",
+  billingTabPayAsYouGo: "按量",
+  billingTabAll: "全部",
+  billingBadgeSubscription: "套餐",
+  billingBadgePayAsYouGo: "按量",
+
+  // Usage trend line chart
+  trendLineTitle: "用量趋势",
+  trendLineSub: "最近 {n} 天",
+  trendLineLegendTokens: "Token 用量",
+  trendLineLegendCacheHit: "缓存命中率",
+  trendLineLegendRequests: "请求数",
+  trendLineShowRequests: "显示请求数",
+  trendLineTooltip: "{date}\nToken: {tokens}\n命中率: {cache}\n请求: {req}",
+  trendLineNoData: "暂无数据",
 } as const;
 
 export type TranslationKey = keyof typeof zhTranslations;