Built on the right data from day one.

Most Claude Code trackers estimate your cost from session logs — which can drift from your bill. WTClaude reads the statusline instead: the same source behind your bill. So in your terminal the number you see is billing-grade — run wtclaude compare and see your own gap.

npx wtclaude setup
See the proof ↓

Free · MIT · macOS + Linux · ~60 seconds.

Your usage data is broken.

Most Claude Code trackers read JSONL session logs. Those logs record input tokens as 0 or 1 in about three-quarters of entries — they’re written mid-stream, before the response finalizes, and never corrected. The result: the cost your tracker shows can drift from what you actually spent — sometimes a little, sometimes a lot. A gap wide enough to choose the wrong plan, miss a budget, or burn through agent credits without knowing. Run wtclaude compare to see yours.

The accuracy gap

Session-log estimate

estimate

reconstructed from the JSONL session logs

Billing-grade (your bill's source)

billing-grade

your real cost

read from the statusline — the source behind your bill

Illustrative — your gap depends on your usage. Run wtclaude compare to see yours.

npx wtclaude setup → wtclaude compare

Built different. Built right.

Billing-grade accuracy

billing-grade

WTClaude reads the statusline data path — the same source behind your bill. Not broken logs, not estimates. Your real numbers.

Two budgets, one tracker

Built for the split (currently paused). If it returns, the dual-pool view lights up automatically — no reinstall.

See where every token went

Session timelines, daily debriefs, model breakdowns, and a “what-if” plan calculator. wtclaude compare shows your real number next to the broken one — the moment that changes how you think about cost.

Claude Fable 5 is back: WTClaude tracks it billing-grade in your terminal, and wtclaude fable forecasts what your pace would cost as usage credits after the July-7 allowance (a labeled estimate; separate from the paused June-15 Agent-SDK change).

Three models now. One honest way to choose.

Sonnet 5 is the new Claude Code default. Fable 5 is back. Opus 4.8 is still there for the heavy lifting. WTClaude prices all three from your own real usage — so you choose on what it actually costs you, not the rate card.

Sonnet 5, priced right

The new default (in Claude Code v2.1.197 and on Free/Pro). We price it at $2/$10 — auto-stepping to $3/$15 on Aug 31 — off the model’s own reported tokens, so nothing goes untracked. Cheaper per token than Opus, though its tokenizer runs a bit heavier, so we show you the real number, not the sticker.

Fable 5, back with a clock

Included up to 50% of your weekly limit through ~July 19 (extended from July 7 → July 12 → July 19), then usage credits at $10/$50. WTClaude reads its billing-grade cost in your terminal and forecasts what your pace would cost in credits after the allowance — a labeled estimate, with a countdown to the cliff.

Compare all three

wtclaude compare-models re-prices your recorded usage across Opus 4.8, Sonnet 5, and Fable 5 — what would this month cost on each? Split by surface (Code billing-grade, Cowork a labeled estimate, Chat excluded). In the CLI, the dashboard, and the companion.

Comparisons re-price your recorded usage, not the same task run on each model — every projection is a labeled estimate. We surface the cost of the choice; we don’t judge which model is “better.”

npx wtclaude setup

then wtclaude compare-models.

See it all on the web.

billing-grade

Everything the CLI tracks, in a dashboard you can actually look at. Your real Claude Code cost over time, a session timeline that shows where the expensive turns were, the compare view, the “what-if” plan calculator, your overall plan limit gauge with reset countdowns, and your Agent-pool forecast tile estimate .

Cost figures are billing-grade for Claude Code run in your terminal. The forecast tile is a clearly-labeled estimate.

Open your dashboard →

One true total, every machine.

Work on a laptop and a desktop? Turn on opt-in cloud sync and WTClaude totals your real usage across all of them — the number no single-machine tracker can give you. (Local-first by default; nothing leaves your machine until you switch sync on, and you see a preview of exactly what syncs before it does.)

wtclaude sync --enable

Opt-in · privacy-first · preview before anything leaves your machine.

Ready when Claude’s billing changes.

Anthropic announced an Agent-SDK billing split for June 15, then paused it before it took effect. Nothing has changed — WTClaude's dual-pool view is built and ready if a revised version returns.

Anthropic announced that agent and claude -p usage would move to a separate dollar budget — then paused it on June 15 before it took effect. If a revised split lands, WTClaude already tracks it per-pool, billing-grade, with no reinstall.

Daily Agent-pool forecast

estimate

A projected daily and monthly agent-pool spend versus your included credits. Install early — every day you track sharpens the projection.

The cost math is billing-grade; the pool split is a heuristic, so this is a forecast — never your exact future bill.

We tell you which numbers are real.

billing-grade inferred estimate

Every number is labeled. Billing-grade for Claude Code cost. Inferred where we have to infer. Estimate for forward-looking projections. We never dress an estimate up as exact. (Today WTClaude tracks Claude Code; Cowork, Chat, and a unified view are coming next.)

Free and open-source. Forever the core.

The tracker is free and MIT-licensed. What’s coming is Guardian — a paid intelligence layer (personalized recommendations, anomaly detection, spend forecasting, coaching) at $2.99/mo · $24.99/year (≈$2.08/mo — save 30%). Install the free tracker now and Guardian inherits your full history from day one.

The tracker, the dashboard, and sync are all free and open-source. Guardian (the paid intelligence layer, $2.99/mo · $24.99/year (≈$2.08/mo — save 30%)) is what’s next.

Your tracker’s been guessing. Stop guessing.

npx wtclaude setup
Read the docs → View on GitHub →

The accuracy story

Why Your Claude Code Cost Tracker Disagrees With Your Bill →

See everything WTClaude does.

Billing-grade accuracy, backup & multi-machine sync, a full dashboard, billing-change readiness — the most complete Claude Code tracker.

Explore all features →