Subtank Download

See what’s left in every AI plan.

모든 AI 요금제의 남은 한도를 한눈에.

Subtank lives in your menu bar and reads the limits of every AI plan you pay for — Claude, ChatGPT, Cursor, Copilot, Kilo, Ollama, OpenCode Go and your API keys — then tells you which account to use next.

Download for Mac How it works

Subtank is a Mac app.Open subtank.dev on your Mac to download it, or install it there with Homebrew.Download anyway

brew install --cask subtank-dev/tap/subtank

Version 0.0.10 Free macOS 13 or later Apple silicon and Intel English · 한국어

Example accounts and numbers. Yours appear once you tick them.

01How it reads

It asks the tools you already use.

First launch opens no login window. Subtank looks at what is already signed in on this Mac, and adds nothing until you tick it.

  1. Look

    A read-only look around

    A fixed list of places: whether Claude Code, Codex, Cursor, Kilo and the GitHub CLI are signed in, and as whom. No network, no password, no vendor tool started.

  2. Connect

    Only what you tick

    Each account is read by its vendor’s own tool or the sign-in already on this Mac — your claude for Claude, OpenAI’s codex app-server for ChatGPT, gh for Copilot. Subtank never renews anyone’s sign-in.

  3. Glance

    One number in the menu bar

    What is left on the account to use next, labelled as such, and coloured by it: green when full, amber from 40%, red near empty. Click it, or press Option Shift Space, for every limit and when it resets; switch on alerts to hear before you hit one.

02One row

Every limit on one line, and the one that binds.

Each account is a row: its windows, when they refill, and what is left on the one that binds. Claude’s flagship model has a weekly limit of its own, and it gets a bar of its own. When the pace of the last hour would empty a limit within about an hour, the row says so.

  1. The plan, and whose it isAs the vendor reports it, with the nickname you gave the account.

  2. The 5-hour windowThe session limit, on plans that have one: how much of it is used. A bar turns amber at 60% and red at 90%.

  3. The weekly windowThe week’s limit across every model.

  4. Fable’s own weekly limitIt counts when Subtank picks an account, so one with Fable nearly spent is not the one it suggests. A switch in Settings turns that off.

  5. When it refillsA countdown per window, from the vendor’s own reset time.

  6. What’s left, coloured when it gets tightThe tightest window decides it. A failed read keeps the last numbers, and once they are 15 minutes old, their age sits beside them.

  7. About an hour before it runs outAt the pace of the last hour, and only then: never days ahead, and gone once you slow down or stop. Between two close accounts, Subtank suggests the one that lasts.

03Switch

Out of room? Start on the account that has it.

Click “Use next”, or right-click a Claude or Codex row. Subtank points your own Claude Code or Codex at that account’s folder, and never reads, copies or renews a sign-in.

  • Start Claude Code on itTerminal opens your own claude in that account’s profile folder. Command-Return in the list does it for the account to use next; on a Codex row it starts Codex.

  • Copy the terminal commandFor a terminal that is already open: one line with a folder in it, no secret.

  • Switch Cursor’s Claude panel to itOne entry in Cursor’s settings, after you allow it once, with a copy of the file kept first. New conversations in the panel use that account.

  • Told the moment you hit a limitWith the hook from Settings → Advanced in Claude Code’s settings, a session that hits its limit brings a notification naming the account with room, with Start there and Switch buttons.

  • Every new session, if you chooseAn option in Settings → Advanced makes a plain claude in a new terminal start on the account with the most room. It adds one line to your shell profile, after you confirm. A conversation that is running is never moved, and no sign-in is copied.

04What it reads

Plans with limits, credits, keys and bills.

Plans with limits

  • Claude Pro · Max · UltraThe weekly window, each model’s weekly limit such as Fable’s, the 5-hour window on plans that have one, and usage credits when they are on.Your own Claude Code — no prompt, no model request.
  • ChatGPT · CodexYour plan and its limit, which Codex, Work and the tasks a dot starts all share; credits you bought; a Business workspace’s monthly credit limit; and the resets you have saved, with when each expires. The row says so when Codex pauses included usage.OpenAI’s own codex app-server.
  • CursorThe two monthly pools Cursor shows, Cursor models and Other models, then on-demand spend and the billing cycle.The sign-in the Cursor app holds, never renewed. Cursor encrypts it; Subtank decrypts it with Cursor’s key from your Keychain, after you allow it.
  • GitHub CopilotAI Credits: a paid plan’s monthly allowance in dollars and anything billed beyond it. On Free, chat and code completions.The GitHub CLI’s token, for one request.
  • Ollama CloudSession and weekly limits with their resets, or the monthly credits on newer plans.A key you paste; Ollama’s balance API.
  • SyntheticA subscription’s limits, as Synthetic reports them.A key you paste, kept in your Keychain.
  • MiniMaxA coding plan’s 5-hour and weekly counts, for each model.The plan’s M Plan API key, pasted.
  • NanoGPTA subscription’s daily and weekly limits.A usage-only token: it can read usage and nothing else.
  • OpenCode GoThe 5-hour, weekly and monthly limits, with their resets.A key you paste. OpenCode’s own client reads them from an address its documentation doesn’t list yet, so the row is marked experimental.

Credits and keys

  • Kilo CodeCredit balance, Kilo Pass credits, the next billing date.The Kilo CLI’s sign-in, or Kilo’s device code.
  • OpenRouterYour account’s balance with a management key, or one key’s spending and limit. With a management key, the Console lists spend by model.A key you paste, kept in your Keychain.
  • DeepSeekThe account balance.A key you paste, kept in your Keychain.
  • Moonshot · KimiThe account balance.A key you paste, kept in your Keychain.
  • xAIWhether the key works. xAI gives API keys no usage or balance to read.A key you paste, kept in your Keychain.
  • Vercel AI GatewayThe credit balance, and what has been used in total.A key you paste, kept in your Keychain.
  • Jev · TypeSafeWhether the key works. TypeSafe’s API gives no balance to read yet; Help says why.A key you paste, kept in your Keychain.
  • PoeYour points balance, plan and add-on points together.A key you paste, kept in your Keychain.
  • Novita AIThe account balance.A key you paste, kept in your Keychain.
  • SiliconFlowThe account balance.A key you paste, kept in your Keychain.
  • Anthropic APIThis month’s spend for the organization.An organization key; needs a team organization in the Claude Console.
  • OpenAI APIThis month’s spend for the organization.An Admin key.

Bills

  • Everything elseWhat you pay, when it renews, and a reminder before it does.The price and date you type in.

05In your terminal

The same answer where you type.

The subtank command prints what the menu bar shows, and Claude Code can show it under its prompt. subtank claude starts your own Claude Code on the account with room, and says which account, which folder and what is left before it does.

Terminal

$ subtank
Ultra · personal 69% left · Fable resets in 6d 9h
$ subtank claude  # Claude Code, on the Claude account to use next
subtank reads a line the app keeps current: it holds no token and talks to no one. subtank claude runs your own claude in that account’s profile folder, so no sign-in is copied or renewed.

~/.claude/settings.json

{
  "statusLine": {
    "type": "command",
    "command": "subtank status",
    "refreshInterval": 60
  }
}
Claude Code runs it after every message, so the line under its prompt names the account that session runs on and what is left, and the account to use next when that is another one. In return, Subtank takes the limits Claude Code reports, so Claude rows stay current between reads. Settings → Advanced → Add to Claude Code… puts it there for you, after showing you the file and the lines, and keeps a status line you already had. More in Help

06House rules

Honest numbers, or none.

  • Unknown is —, never 0.

    A number the vendor did not give is a dash. A failed read keeps the last numbers; once they are 15 minutes old they are dimmed with their age, and the recommendation stops choosing by them.

  • Your sign-ins stay yours.

    Claude Code, Codex, Cursor and gh keep and renew their own sign-ins. Cursor encrypts its own, and Subtank decrypts it, in memory, only after you allow it. Removing an account deletes only what Subtank created for it.

  • Nothing happens without a click — except updates.

    Alerts stay off until you switch them on. Opening at login, a new account, a browser sign-in: each is a button you press. Updates are the exception: by default a new version downloads by itself and installs when your Mac is idle and no Subtank window is open. Settings → General can make it wait until you quit.

07Privacy

The privacy promise

No account, no telemetry. The only request to a Subtank server is the update check.

Nothing reaches a service until you add an account for it, and then only that service. What Subtank keeps stays on your Mac.Read the privacy page

08Get it

Free, for macOS 13 or later.

Download for Mac

Subtank is a Mac app.Open subtank.dev on your Mac to download it, or install it there with Homebrew.Download anyway

brew install --cask subtank-dev/tap/subtank

Apple silicon and Intel. Signed with the developer’s ID and notarized by Apple, and it updates itself.