diff --git a/packages/app/src/providers/connect/chatgpt-usage-limit.stories.tsx b/packages/app/src/providers/connect/chatgpt-usage-limit.stories.tsx
new file mode 100644
index 00000000000..2059b60d8c7
--- /dev/null
+++ b/packages/app/src/providers/connect/chatgpt-usage-limit.stories.tsx
@@ -0,0 +1,23 @@
+import { Button } from "@opencode/ui/button"
+import { useDialog } from "@opencode/ui/context/dialog"
+import { onMount } from "solid-js"
+import { DialogChatGPTUsageLimit } from "./chatgpt-usage-limit"
+
+function UsageLimitStory() {
+  const dialog = useDialog()
+  const open = () => dialog.show(() => <DialogChatGPTUsageLimit />)
+  onMount(open)
+
+  return (
+    <Button variant="neutral" onClick={open}>
+      Open ChatGPT usage limit
+    </Button>
+  )
+}
+
+export default {
+  title: "App/Dialogs/Connect Provider",
+  id: "app-dialog-chatgpt-usage-limit",
+}
+
+export const ChatGPTUsageLimit = { render: () => <UsageLimitStory /> }
diff --git a/packages/app/src/providers/connect/chatgpt-usage-limit.tsx b/packages/app/src/providers/connect/chatgpt-usage-limit.tsx
new file mode 100644
index 00000000000..249c0603a8e
--- /dev/null
+++ b/packages/app/src/providers/connect/chatgpt-usage-limit.tsx
@@ -0,0 +1,48 @@
+import { Button } from "@opencode/ui/button"
+import { useDialog } from "@opencode/ui/context/dialog"
+import { Dialog, DialogTitle } from "@opencode/ui/dialog"
+import { ProviderIcon } from "@opencode/ui/provider-icon"
+import { useLanguage } from "@/runtime/i18n/language"
+import { usePlatform } from "@/runtime/platform/platform"
+
+export function DialogChatGPTUsageLimit() {
+  const dialog = useDialog()
+  const language = useLanguage()
+  const platform = usePlatform()
+
+  return (
+    <Dialog fit containerClass="!w-[min(calc(100vw_-_32px),390px)] !rounded-xl">
+      <div class="flex w-full flex-col items-center px-8 pb-8 pt-9 text-center [font-family:var(--v2-font-family-sans)]">
+        <ProviderIcon id="openai" class="!size-12 text-v2-icon-icon-base" aria-hidden="true" />
+        <div class="mt-6 max-w-[270px] text-[20px] font-[530] leading-7 tracking-[-0.3px] text-v2-text-text-base">
+          <DialogTitle>
+            <bdi dir="auto">{language.t("provider.connect.chatgptUsageLimit.title")}</bdi>
+          </DialogTitle>
+        </div>
+        <p class="mt-3 text-[13px] leading-5 text-v2-text-text-muted">
+          <bdi dir="auto">{language.t("provider.connect.chatgptUsageLimit.description")}</bdi>
+        </p>
+        <Button
+          variant="contrast"
+          size="large"
+          class="mt-8 w-full"
+          autofocus
+          onClick={() => {
+            platform.openExternal("https://chatgpt.com/#settings/Usage")
+            dialog.close()
+          }}
+        >
+          {language.t("provider.connect.chatgptUsageLimit.manage")}
+        </Button>
+        <Button
+          variant="ghost"
+          size="large"
+          class="mt-2 w-full"
+          onClick={() => dialog.close()}
+        >
+          {language.t("provider.connect.chatgptUsageLimit.close")}
+        </Button>
+      </div>
+    </Dialog>
+  )
+}
diff --git a/packages/app/src/runtime/i18n/en.ts b/packages/app/src/runtime/i18n/en.ts
index 0c44e05dad1..ff4ef6504ec 100644
--- a/packages/app/src/runtime/i18n/en.ts
+++ b/packages/app/src/runtime/i18n/en.ts
@@ -218,6 +218,10 @@ export const dict = {
   "provider.connect.models.description": "Choose a model to start with. You can switch models anytime.",
   "provider.connect.models.available": "Available models",
   "provider.connect.models.list": "Models available from {{provider}}",
+  "provider.connect.chatgptUsageLimit.title": "ChatGPT usage limit reached",
+  "provider.connect.chatgptUsageLimit.description": "Review your usage settings in ChatGPT.",
+  "provider.connect.chatgptUsageLimit.manage": "Manage usage",
+  "provider.connect.chatgptUsageLimit.close": "Close",
   "provider.connect.console.refreshFailed":
     "Your account is connected, but we couldn't load your models. Try again to refresh them.",
   "provider.connect.console.connected": "OpenCode connected",
diff --git a/packages/app/src/session/usage-exceeded-dialogs.test.ts b/packages/app/src/session/usage-exceeded-dialogs.test.ts
index c57aba79d84..cfd5478580f 100644
--- a/packages/app/src/session/usage-exceeded-dialogs.test.ts
+++ b/packages/app/src/session/usage-exceeded-dialogs.test.ts
@@ -1,6 +1,6 @@
 import { describe, expect, test } from "bun:test"
 import { Schema } from "effect"
-import { GoUpsellState } from "./usage-exceeded-dialogs"
+import { GoUpsellState, isChatGPTUsageLimit } from "./usage-exceeded-dialogs"
 import { Persistence } from "@/runtime/persistence/schema"
 
 const decode = Schema.decodeUnknownSync(
@@ -38,3 +38,31 @@ describe("usage exceeded preferences", () => {
     })
   })
 })
+
+describe("ChatGPT usage limit", () => {
+  const message =
+    "ChatGPT usage limit reached. Try again after your allowance resets; check ChatGPT Settings → Usage for details."
+
+  test("detects the mapped message regardless of failure type", () => {
+    expect(
+      isChatGPTUsageLimit({
+        type: "provider.rate-limit",
+        message,
+        status: 429,
+      }),
+    ).toBe(true)
+    expect(isChatGPTUsageLimit({ type: "provider.unknown", message })).toBe(true)
+  })
+
+  test("ignores other rate limits and similar messages", () => {
+    expect(isChatGPTUsageLimit({ type: "provider.rate-limit", message: "Rate limit exceeded", status: 429 })).toBe(
+      false,
+    )
+    expect(
+      isChatGPTUsageLimit({
+        type: "provider.rate-limit",
+        message: "ChatGPT usage limit reached",
+      }),
+    ).toBe(false)
+  })
+})
diff --git a/packages/app/src/session/usage-exceeded-dialogs.tsx b/packages/app/src/session/usage-exceeded-dialogs.tsx
index 3a7cb996913..33d3d792f1b 100644
--- a/packages/app/src/session/usage-exceeded-dialogs.tsx
+++ b/packages/app/src/session/usage-exceeded-dialogs.tsx
@@ -1,6 +1,6 @@
 import { useWorkspaceLocation } from "@/workspaces/location"
 import { Persist, persisted } from "@/runtime/persistence/storage"
-import type { SessionStatus } from "@opencode/client/promise"
+import type { SessionStatus, SessionStepFailed } from "@opencode/client/promise"
 import { onCleanup } from "solid-js"
 import { Schema } from "effect"
 import { Persistence } from "@/runtime/persistence/schema"
@@ -14,6 +14,14 @@ const GO_UPSELL_ACCOUNT_RATE_LIMIT_LAST_SEEN_AT = "go_upsell_account_rate_limit_
 const GO_UPSELL_ACCOUNT_RATE_LIMIT_DONT_SHOW = "go_upsell_account_rate_limit_dont_show"
 const GO_UPSELL_WINDOW = 86_400_000 // 24 hrs
 const GO_UPSELL_PROVIDERS = new Set(["opencode", "opencode-go"])
+const CHATGPT_USAGE_LIMIT_WINDOW = 86_400_000 // 24 hrs
+
+export function isChatGPTUsageLimit(error: SessionStepFailed["data"]["error"]) {
+  return (
+    error.message ===
+    "ChatGPT usage limit reached. Try again after your allowance resets; check ChatGPT Settings → Usage for details."
+  )
+}
 
 export const GoUpsellState = Persistence.struct({
   [GO_UPSELL_FREE_TIER_LAST_SEEN_AT]: Schema.NullOr(Schema.Finite),
@@ -52,6 +60,25 @@ export function useUsageExceededDialogs() {
     [GO_UPSELL_ACCOUNT_RATE_LIMIT_LAST_SEEN_AT]: null,
     [GO_UPSELL_ACCOUNT_RATE_LIMIT_DONT_SHOW]: null,
   })
+  const [chatgptUsageLimit, setChatGPTUsageLimit] = persisted(
+    Persist.global("chatgpt-usage-limit"),
+    Persistence.struct({ lastSeenAt: Schema.NullOr(Schema.Finite) }),
+    { lastSeenAt: null },
+  )
+
+  onCleanup(
+    sdk().event.on("session.step.failed", (evt) => {
+      if (evt.data.sessionID !== params.id) return
+      if (!isChatGPTUsageLimit(evt.data.error) || dialog.active) return
+      if (chatgptUsageLimit.lastSeenAt && Date.now() - chatgptUsageLimit.lastSeenAt < CHATGPT_USAGE_LIMIT_WINDOW) return
+
+      void import("@/providers/connect/chatgpt-usage-limit").then((usage) => {
+        if (dialog.active) return
+        setChatGPTUsageLimit("lastSeenAt", Date.now())
+        dialog.show(() => <usage.DialogChatGPTUsageLimit />)
+      })
+    }),
+  )
 
   onCleanup(
     sdk().event.on("session.status", (evt) => {