How much does it cost to have an AI analyze your workday?
3 min read · TimeLeak
About one to three cents per day with a small model — here's the math.
A 5-second watcher produces ~8,640 metadata lines per 12-hour day. You don't send the raw lines; you send aggregates: top apps by minutes, top window contexts, switch counts, polling loops, focus blocks. That digest is 1,500–3,000 tokens. Add the prompt and a 1,000-token response:
| Piece | Tokens | Cost (Claude Haiku-class) |
|---|---|---|
| Digest + prompt in | ~4,000 | fractions of a cent |
| Brief out | ~1,000 | fractions of a cent |
| 20 sampled frames (optional) | ~1,500/img eq. | 1–2¢ |
| Daily total | ~1–3¢ |
That's under a dollar a month for a daily behavioral audit — which is why bring-your-own-key beats a subscription here: the underlying compute is nearly free, so paying $10+/mo for someone to run it is pure margin. TimeLeak Pro is a one-time purchase precisely because your marginal cost is your own key at ~1¢/day.