Gauge — AI Usage & Rate Limit Monitor
Gauge 1.2.0 · Claude, ChatGPT, Gemini & Grok

Know before you
hit the AI limit.

One private Chrome extension for provider-reported usage, reset countdowns, burn-rate forecasts, history, context coaching, and one-click handoffs across your favorite AI tools.

Get Gauge — Free See every feature →
Gauge · live usage across your AI workspace
Refactor all 47 modules and write documentation for each one.
Starting with the auth layer. Here's the refactored structure with type annotations…
Great. Now the database layer, then payments.
Working through database models…
Context
78% full · 3 files = 61K → detach to reclaim ~30%
Opus 4.5 Pro · 20×
67% ≈13 msgs · ↺ 2h 14m ~2,840 tokens
PRO
67%
Session left≈13 msgs
Used / Total27 / 40
Resets2h 14m
Weekly cap54% · Thu
At this pace ~37m to limit — switch to Sonnet for ~190 msgs
Context (78% full)
Continue in
ChatGPT
Gemini
Grok
Claude
4
AI providers in one compact monitor
Local
Private processing. Conversations stay in browser.
$0
To start — free tier is genuinely powerful
1-click
Resume Kit handoff when a limit gets in the way
One live view

All your AI limits.
One honest dashboard.

Gauge reads the usage information each signed-in provider makes available and presents it in the same clear format—usage, limits, reset time, and what to do next.

Claude
Live
67%
5-hour window used
Weekly 54%Resets 2h 14m
ChatGPT
Live
42%
5-hour window used
Weekly 31%Resets 3h 08m
Gemini
Live
28%
Active usage window
Provider windowReset detected
Grok
Live
73%
Weekly pool remaining
Product breakdownReset detected
Realistic data: the percentages shown above are illustrative landing-page examples. Inside the extension, Gauge displays the provider-reported values available to your signed-in account. Availability and window types can vary by provider, plan, and account.
Reset forecastsSee countdowns and projected limit timing before your work is interrupted.
80% and 95% alertsGet a visible warning as usage moves from comfortable to critical.
Provider cardsCompare active windows without jumping among four separate settings pages.
Beyond a usage bar

See the limit coming.
Then keep your work moving.

Gauge turns provider-reported limits into practical decisions: when to switch models, trim context, start a fresh chat, or hand the work to another AI.

Multi-provider usage cards
View Claude 5-hour and weekly limits, ChatGPT 5-hour and weekly windows, Gemini provider windows, and Grok's weekly pool and product breakdown. Reset timing is displayed whenever the provider exposes it.
Free · provider-reported data
Live composer token counter
Token count updates as you type using a bundled o200k tokenizer — no API calls needed. A context-window bar shows this conversation's real tokens vs the model limit, broken down by files, chat history, and system prompt.
Free
Burn-rate & reset forecast
Understand whether your current pace will reach a limit before the next reset. Forecast text stays visible in Gauge; Pro adds browser notifications at your chosen warning threshold.
Free (text) · Pro (push alerts)
Context trim-coach + model advisor
"Your 3 files are 61K — detach to reclaim ~30%." One-click model switch when Opus is running low: "Switch to Sonnet for ~190 msgs." Cache timer shows the ~5-min prompt-cache countdown so you know why replies slow down.
Free
Usage history & time-of-day profile
A 7-day strip and heatmap reveal when Claude usage runs hottest and when to start heavier work. Export history as CSV or JSON. The 30-day calendar is available with Pro.
Free (7 days) · Pro (30 days)
Predictive push alerts (Pro)
Browser push notification fires once per window when you're about to run out — based on live burn rate and your custom threshold. Free users always see the prediction text in the strip; Pro adds the push so you're never caught off guard.
Pro
Always-visible toolbar badge
See your current percentage without opening another settings page. Open the popup for provider cards, active windows, reset timers, and the next recommended action.
Free
Anthropic API spend tracker
Track real month-to-date Anthropic API spend separately from Claude subscription limits, so paid API work and chat-plan usage never get mixed together.
Pro
Cross-platform handoff

A limit should not
stop the work.

When Claude gets full or a provider limit is close, Resume Kit prepares the conversation for ChatGPT, Gemini, Grok, or a fresh Claude chat—without rebuilding the context by hand.

Resume Kit — not just copy-paste
Gauge extracts your full both-sides transcript, formats it correctly for the destination AI, attaches code blocks as separate files, and opens the new tab — all in one click. The destination AI gets full context and picks up exactly where Claude left off. Copy & Download (.md) is always unlimited and free.
ChatGPT
Full transcript + code files sent to ChatGPT, formatted for GPT-style context.
Handoff destination
Gemini
Conversation handed off to Gemini with structured context ready to continue.
Handoff destination
Grok
Full context transferred to Grok via clipboard, opened in a new tab instantly.
Handoff destination
New Claude chat
Start a fresh Claude session with your conversation context pre-filled.
Handoff destination
New in Gauge 1.2.0: ChatGPT, Gemini, and Grok are now usage sources as well as handoff destinations. Gauge shows the authenticated, provider-reported windows it can access—never invented token counts or made-up limits.
Free vs Pro

Free is genuinely powerful.
Pro adds intelligence on top.

Core provider monitoring stays useful for free. Pro adds deeper history, automation, spend visibility, and proactive notifications.

Free$0 forever
Claude, ChatGPT, Gemini, and Grok provider cards
Usage windows, reset timing, and provider-specific breakdowns
Claude plan badge + toolbar icon percentage
Live composer token counter as you type
Context-window bar + files/history/system breakdown
Context trim-coach + one-click model-switch advisor
Burn-rate prediction text + weekly-cap forecast text
Cache timer (~5-min prompt-cache countdown)
5 cross-platform handoffs per day (Resume Kit)
Copy & Download transcript (.md) — always unlimited
7-day usage history strip + heatmap
Time-of-day usage profile + CSV/JSON export
2× boost-window badge · Dark mode · Keyboard shortcut
Predictive push alerts (see text only, no push)
30-day history calendar (7 days only)
API cost tracker (locked preview)
One-click bloat removal (visible, locked)
Pro$2/mo · $20 lifetime
Everything in Free
Predictive push alerts — browser notification before you run out, once per window
Boost-window notifications — push when Anthropic's 2× promo goes live
30-day usage history — full heatmap calendar
Unlimited handoffs — no 5/day cap
API cost tracker — real month-to-date Anthropic API spend
One-click bloat removal — Remove button on context-eating attachments
License key synced across all your Chrome devices
Pricing

Start free. Pro for $2/month.

Free is real and useful. Pro adds intelligence and automation on top.

Free
$0
forever · no card needed
  • Claude, ChatGPT, Gemini & Grok usage cards
  • Provider windows, resets & available breakdowns
  • Composer token counter + context bar
  • Trim-coach + model-switch advisor
  • Burn-rate & weekly forecast (text)
  • 5 Resume Kit handoffs/day
  • Copy & Download (.md) — unlimited
  • 7-day usage history + time-of-day profile
  • Predictive push alerts
  • 30-day history calendar
  • Unlimited handoffs
  • API cost tracker
Get Gauge — Free
Best value
Pro Monthly
$2
per month · cancel anytime
  • Everything in Free
  • Predictive browser push alerts
  • Boost-window push notifications
  • 30-day usage history heatmap
  • Unlimited handoffs (no daily cap)
  • API cost tracker (month-to-date $)
  • One-click bloat removal
  • License synced across all devices
Get Pro — $2/month
Pro Lifetime
$20
one-time · all future updates
  • Everything in Pro Monthly
  • Pay once, use forever
  • All future Pro features included
  • Works across all your Chrome devices
  • Instant license key by email
Get Lifetime — $20
Roadmap · not yet in 1.2.0

The next layer of
usage intelligence.

Ideas inspired by the best usage-management products, shown here transparently as planned directions—not features already shipped.

Team dashboard

Shared provider health, limit-risk views, member trends, and practical plan guidance.

Exploring
Plan optimization

Longer-range analysis that can highlight when a plan may be underused or consistently constrained.

Exploring
Daily summaries

Optional usage recap with reset outlook, highest-risk windows, and useful planning signals.

Exploring
Privacy first

Your conversations are
not the product.

Gauge is designed to do its work in your browser. It reads only the usage and plan information required for its meters and does not collect your conversation content.

✓Local history and settings. Usage history, thresholds, and preferences stay in Chrome storage on your device.
✓No conversation analytics. Gauge does not build profiles from the prompts or responses in your chats.
✓Minimal external validation. Pro license validation is separate from your chat content.
conversation_content = never collected
usage_history = stored locally
provider_session = stays in browser
resume_kit = runs when you request it
FAQ

Questions

Which AI services can Gauge monitor? +
Gauge 1.2.0 supports Claude, ChatGPT, Gemini, and Grok. It reads the authenticated usage windows each service makes available to your signed-in browser session. The exact fields and reset windows vary by provider and plan.
How does Gauge read usage without a new API key? +
When you are signed in, each supported web app requests usage information for its own interface. Gauge uses that existing authenticated browser context to display the available usage fields in one consistent view. No separate developer API key is required for subscription-limit monitoring.
What is the Resume-Kit handoff? +
When you hit your Claude limit, clicking a handoff button extracts your full both-sides conversation, formats it correctly for the destination AI (ChatGPT, Gemini, Grok, or a new Claude chat), attaches code blocks as separate files, and opens the destination in a new tab. It's structured context transfer — the other AI picks up exactly where Claude left off.
Does Gauge send my conversations anywhere? +
No. Gauge has no servers. All processing is local in your browser. Usage data, history, and settings stay in chrome.storage on your device only. The only external call is to Polar.sh to validate your Pro license key — no conversation content, ever.
What does the 2× boost-window badge mean? +
Anthropic occasionally doubles usage limits during promotional windows. Gauge detects active boosts and shows a badge. Free users see the badge. Pro users also get a push notification when the boost starts so they can schedule heavy tasks around it.
Does it work on Edge, Brave, and Arc? +
Yes — any Chromium-based browser. Chrome, Edge, Brave, Arc, and Vivaldi all supported. Firefox is not yet supported.

Four AI providers.
One clear Gauge.

Provider-reported usage. Private by design. Useful before the limit.

Add Gauge to Chrome — Free