anomalyco · dingskyhi · Jun 15, 2026
@@ -11,6 +11,7 @@ import { useProviders } from "@/hooks/use-providers"
 import { getSessionContextMetrics } from "@/components/session/session-context-metrics"
 import { useSessionLayout } from "@/pages/session/session-layout"
 import { createSessionTabs } from "@/pages/session/helpers"
+import { createSessionContextFormatter } from "@/components/session/session-context-format"
 
 interface SessionContextUsageProps {
   variant?: "button" | "indicator"
@@ -44,18 +45,11 @@ export function SessionContextUsage(props: SessionContextUsageProps) {
   })
   const messages = createMemo(() => (params.id ? (sync().data.message[params.id] ?? []) : []))
 
-  const usd = createMemo(
-    () =>
-      new Intl.NumberFormat(language.intl(), {
-        style: "currency",
-        currency: "USD",
-      }),
-  )
-
   const metrics = createMemo(() => getSessionContextMetrics(messages(), [...providers.all().values()]))
+  const formatter = createMemo(() => createSessionContextFormatter(language.intl(), sync().data.config.display))
   const context = createMemo(() => metrics().context)
   const cost = createMemo(() => {
-    return usd().format(metrics().totalCost)
+    return formatter().cost(metrics().totalCost)
   })
 
   const openContext = () => {

@@ -0,0 +1,24 @@
+import { describe, expect, test } from "bun:test"
+import { createSessionContextFormatter } from "./session-context-format"
+
+describe("createSessionContextFormatter", () => {
+  test("keeps compact USD symbols for English cost", () => {
+    expect(createSessionContextFormatter("en").cost(1.25)).toBe("$1.25")
+  })
+
+  test("formats configured CNY cost with the yuan symbol", () => {
+    expect(createSessionContextFormatter("zh-Hans", { currency: "CNY" }).cost(1.25)).toBe("¥9.00")
+  })
+
+  test("uses configured display currency rate", () => {
+    expect(createSessionContextFormatter("zh-Hans", { currency: "CNY", currency_rate: 7 }).cost(1.25)).toBe("¥8.75")
+  })
+
+  test("ignores display currency rate when currency is not configured", () => {
+    expect(createSessionContextFormatter("en", { currency_rate: 7 }).cost(1.25)).toBe("$1.25")
+  })
+
+  test("formats configured CNY source cost without converting again", () => {
+    expect(createSessionContextFormatter("zh-Hans", { cost_currency: "CNY", currency: "CNY" }).cost(1.25)).toBe("¥1.25")
+  })
+})
@@ -1,7 +1,11 @@
 import { DateTime } from "luxon"
+import { CostDisplay } from "@opencode-ai/core/cost-display"
 
-export function createSessionContextFormatter(locale: string) {
+export function createSessionContextFormatter(locale: string, config?: CostDisplay.Config) {
   return {
+    cost(value: number) {
+      return CostDisplay.format(locale, value, config)
+    },
     number(value: number | null | undefined) {
       if (value === undefined) return "—"
       if (value === null) return "—"

@@ -124,20 +124,12 @@ export function SessionContextTab() {
     { equals: same },
   )
 
-  const usd = createMemo(
-    () =>
-      new Intl.NumberFormat(language.intl(), {
-        style: "currency",
-        currency: "USD",
-      }),
-  )
-
   const metrics = createMemo(() => getSessionContextMetrics(messages(), [...providers.all().values()]))
   const ctx = createMemo(() => metrics().context)
-  const formatter = createMemo(() => createSessionContextFormatter(language.intl()))
+  const formatter = createMemo(() => createSessionContextFormatter(language.intl(), sync().data.config.display))
 
   const cost = createMemo(() => {
-    return usd().format(metrics().totalCost)
+    return formatter().cost(metrics().totalCost)
   })
 
   const counts = createMemo(() => {

diff --git a/packages/core/src/cost-display.test.ts b/packages/core/src/cost-display.test.ts
@@ -0,0 +1,28 @@
+import { describe, expect, test } from "bun:test"
+import { CostDisplay } from "./cost-display"
+
+describe("CostDisplay", () => {
+  test("formats USD by default", () => {
+    expect(CostDisplay.format("en", 1.25)).toBe("$1.25")
+  })
+
+  test("formats configured CNY cost with the yuan symbol", () => {
+    expect(CostDisplay.format("zh-Hans", 1.25, { currency: "CNY" })).toBe("¥9.00")
+  })
+
+  test("uses configured display currency rate", () => {
+    expect(CostDisplay.format("zh-Hans", 1.25, { currency: "CNY", currency_rate: 7 })).toBe("¥8.75")
+  })
+
+  test("ignores display currency rate when currency is not configured", () => {
+    expect(CostDisplay.format("en", 1.25, { currency_rate: 7 })).toBe("$1.25")
+  })
+
+  test("formats configured CNY source cost without converting again", () => {
+    expect(CostDisplay.format("zh-Hans", 1.25, { cost_currency: "CNY", currency: "CNY" })).toBe("¥1.25")
+  })
+
+  test("converts configured CNY source cost to USD", () => {
+    expect(CostDisplay.format("en", 7.2, { cost_currency: "CNY", currency: "USD" })).toBe("$1.00")
+  })
+})
diff --git a/packages/core/src/cost-display.ts b/packages/core/src/cost-display.ts
@@ -0,0 +1,48 @@
+export namespace CostDisplay {
+  export type Config = {
+    currency?: string
+    cost_currency?: string
+    currency_rate?: number
+  }
+
+  const USD_RATE: Record<string, number> = {
+    USD: 1,
+    CNY: 7.2,
+    EUR: 0.92,
+    GBP: 0.79,
+    JPY: 155,
+    KRW: 1_370,
+  }
+
+  export function format(locale: string, cost: number, config?: Config) {
+    const from = currency(config?.cost_currency)
+    const next = currency(config?.currency)
+    return money(locale, cost * rate(config, from, next), next) ?? money(locale, cost, "USD") ?? `$${cost.toFixed(2)}`
+  }
+
+  function currency(input: string | undefined) {
+    const value = input?.trim().toUpperCase()
+    if (!value) return "USD"
+    if (/^[A-Z]{3}$/.test(value)) return value
+    return "USD"
+  }
+
+  function rate(config: Config | undefined, from: string, next: string) {
+    if (from === next) return 1
+    if (config?.currency_rate && Number.isFinite(config.currency_rate) && config.currency_rate > 0)
+      return config.currency_rate
+    return (USD_RATE[next] ?? 1) / (USD_RATE[from] ?? 1)
+  }
+
+  function money(locale: string, value: number, next: string) {
+    try {
+      return new Intl.NumberFormat(locale, {
+        style: "currency",
+        currency: next,
+        currencyDisplay: "symbol",
+      }).format(value)
+    } catch {
+      return
+    }
+  }
+}
diff --git a/packages/core/src/plugin/skill/customize-opencode.md b/packages/core/src/plugin/skill/customize-opencode.md
@@ -68,6 +68,12 @@ Every field is optional.
   "snapshot": true,
   "instructions": ["AGENTS.md", "docs/style.md"],
 
+  "display": {
+    "currency": "CNY",
+    "cost_currency": "USD",
+    "currency_rate": 7.2
+  },
+
   "skills": {
     "paths": [".opencode/skills", "/abs/path/to/skills"],
     "urls": ["https://example.com/.well-known/skills/"]
@@ -154,6 +160,7 @@ Shape notes worth being explicit about:
 - `plugin` is an array of strings or `[name, options]` tuples, not an object.
 - `mcp[name].command` is an array of strings, never a single string. `type` is required.
 - `permission` is either a string action or an object keyed by tool name.
+- `display.cost_currency` is the currency used by configured model prices. If configured costs are already RMB, use `{ "currency": "CNY", "cost_currency": "CNY" }`.
 
 ## Skills
 

diff --git a/packages/core/src/v1/config/config.ts b/packages/core/src/v1/config/config.ts
@@ -84,6 +84,22 @@ export const Info = Schema.Struct({
   username: Schema.optional(Schema.String).annotate({
     description: "Custom username to display in conversations instead of system username",
   }),
+  display: Schema.optional(
+    Schema.Struct({
+      currency: Schema.optional(Schema.String).annotate({
+        description:
+          "ISO 4217 currency code used to display usage costs, for example USD or CNY.",
+      }),
+      cost_currency: Schema.optional(Schema.String).annotate({
+        description:
+          "ISO 4217 currency code of the stored usage costs. Defaults to USD. Set to CNY if configured model prices are already RMB.",
+      }),
+      currency_rate: Schema.optional(Schema.Finite.check(Schema.isGreaterThan(0))).annotate({
+        description:
+          "Optional multiplier from cost_currency to currency. When omitted, built-in approximate rates are used for supported currencies.",
+      }),
+    }),
+  ).annotate({ description: "Display preferences" }),
   mode: Schema.optional(
     Schema.StructWithRest(
       Schema.Struct({ build: Schema.optional(ConfigAgentV1.Info), plan: Schema.optional(ConfigAgentV1.Info) }),

diff --git a/packages/sdk/js/src/gen/types.gen.ts b/packages/sdk/js/src/gen/types.gen.ts
@@ -1172,6 +1172,21 @@ export type McpRemoteConfig = {
  */
 export type LayoutConfig = "auto" | "stretch"
 
+export type DisplayConfig = {
+  /**
+   * ISO 4217 currency code used to display usage costs, for example USD or CNY.
+   */
+  currency?: string
+  /**
+   * ISO 4217 currency code of the stored usage costs. Defaults to USD. Set to CNY if configured model prices are already RMB.
+   */
+  cost_currency?: string
+  /**
+   * Optional multiplier from cost_currency to currency. When omitted, built-in approximate rates are used for supported currencies.
+   */
+  currency_rate?: number
+}
+
 export type Config = {
   /**
    * JSON schema reference for configuration validation
@@ -1257,6 +1272,10 @@ export type Config = {
    * Custom username to display in conversations instead of system username
    */
   username?: string
+  /**
+   * Display preferences
+   */
+  display?: DisplayConfig
   /**
    * @deprecated Use `agent` field instead.
    */

diff --git a/packages/sdk/js/src/v2/gen/types.gen.ts b/packages/sdk/js/src/v2/gen/types.gen.ts
@@ -1952,6 +1952,11 @@ export type Config = {
   small_model?: string
   default_agent?: string
   username?: string
+  display?: {
+    currency?: string
+    cost_currency?: string
+    currency_rate?: number
+  }
   mode?: {
     build?: AgentConfig
     plan?: AgentConfig

diff --git a/packages/sdk/openapi.json b/packages/sdk/openapi.json
@@ -20282,6 +20282,25 @@
         },
         "additionalProperties": false
       },
+      "DisplayConfig": {
+        "type": "object",
+        "properties": {
+          "currency": {
+            "type": "string",
+            "description": "ISO 4217 currency code used to display usage costs, for example USD or CNY."
+          },
+          "cost_currency": {
+            "type": "string",
+            "description": "ISO 4217 currency code of the stored usage costs. Defaults to USD. Set to CNY if configured model prices are already RMB."
+          },
+          "currency_rate": {
+            "type": "number",
+            "description": "Optional multiplier from cost_currency to currency. When omitted, built-in approximate rates are used for supported currencies.",
+            "exclusiveMinimum": 0
+          }
+        },
+        "additionalProperties": false
+      },
       "Config": {
         "type": "object",
         "properties": {
@@ -20456,6 +20475,9 @@
           "username": {
             "type": "string"
           },
+          "display": {
+            "$ref": "#/components/schemas/DisplayConfig"
+          },
           "mode": {
             "type": "object",
             "properties": {

diff --git a/packages/tui/src/component/prompt/index.tsx b/packages/tui/src/component/prompt/index.tsx
@@ -56,6 +56,7 @@ import { useTuiConfig } from "../../config"
 import { usePromptWorkspace } from "./workspace"
 import { usePromptMove } from "./move"
 import { readLocalAttachment } from "./local-attachment"
+import { formatCost } from "../../util/cost-display"
 
 export type PromptProps = {
   sessionID?: string
@@ -93,11 +94,6 @@ export type PromptRef = {
   submit(): void
 }
 
-const money = new Intl.NumberFormat("en-US", {
-  style: "currency",
-  currency: "USD",
-})
-
 const DRAFT_RETENTION_MIN_CHARS = 20
 
 function randomIndex(count: number) {
@@ -272,7 +268,7 @@ export function Prompt(props: PromptProps) {
     const cost = session?.cost ?? 0
     return {
       context: pct ? `${Locale.number(tokens)} (${pct})` : Locale.number(tokens),
-      cost: cost > 0 ? money.format(cost) : undefined,
+      cost: cost > 0 ? formatCost(cost, sync.data.config.display) : undefined,
     }
   })
 

diff --git a/packages/tui/src/feature-plugins/sidebar/context.tsx b/packages/tui/src/feature-plugins/sidebar/context.tsx
@@ -2,14 +2,10 @@ import type { AssistantMessage } from "@opencode-ai/sdk/v2"
 import type { TuiPlugin, TuiPluginApi } from "@opencode-ai/plugin/tui"
 import type { BuiltinTuiPlugin } from "../builtins"
 import { createMemo } from "solid-js"
+import { formatCost } from "../../util/cost-display"
 
 const id = "internal:sidebar-context"
 
-const money = new Intl.NumberFormat("en-US", {
-  style: "currency",
-  currency: "USD",
-})
-
 function View(props: { api: TuiPluginApi; session_id: string }) {
   const theme = () => props.api.theme.current
   const msg = createMemo(() => props.api.state.session.messages(props.session_id))
@@ -41,7 +37,7 @@ function View(props: { api: TuiPluginApi; session_id: string }) {
       </text>
       <text fg={theme().textMuted}>{state().tokens.toLocaleString()} tokens</text>
       <text fg={theme().textMuted}>{state().percent ?? 0}% used</text>
-      <text fg={theme().textMuted}>{money.format(cost())} spent</text>
+      <text fg={theme().textMuted}>{formatCost(cost(), props.api.state.config.display)} spent</text>
     </box>
   )
 }

diff --git a/packages/tui/src/routes/session/subagent-footer.tsx b/packages/tui/src/routes/session/subagent-footer.tsx
@@ -7,6 +7,7 @@ import type { AssistantMessage } from "@opencode-ai/sdk/v2"
 import { Locale } from "../../util/locale"
 import { useTerminalDimensions } from "@opentui/solid"
 import { useCommandShortcut, useOpencodeKeymap } from "../../keymap"
+import { formatCost } from "../../util/cost-display"
 
 export function SubagentFooter() {
   const route = useRouteData("session")
@@ -43,14 +44,9 @@ export function SubagentFooter() {
     const pct = model?.limit.context ? `${Math.round((tokens / model.limit.context) * 100)}%` : undefined
     const cost = session()?.cost ?? 0
 
-    const money = new Intl.NumberFormat("en-US", {
-      style: "currency",
-      currency: "USD",
-    })
-
     return {
       context: pct ? `${Locale.number(tokens)} (${pct})` : Locale.number(tokens),
-      cost: cost > 0 ? money.format(cost) : undefined,
+      cost: cost > 0 ? formatCost(cost, sync.data.config.display) : undefined,
     }
   })
 

diff --git a/packages/tui/src/util/cost-display.ts b/packages/tui/src/util/cost-display.ts
@@ -0,0 +1,9 @@
+import { CostDisplay } from "@opencode-ai/core/cost-display"
+
+export function formatCost(usd: number, config?: CostDisplay.Config) {
+  return CostDisplay.format(locale(config), usd, config)
+}
+
+function locale(config: CostDisplay.Config | undefined) {
+  return config?.currency?.trim().toUpperCase() === "CNY" ? "zh-Hans" : "en-US"
+}