Per-1M token prices don't answer "what does MY task cost." TaskBill is a measurement kit: run a workload N times across providers and get a finance-ready cost-per-task report (mean, p50, p90, cache-hit vs miss split). You get: a measurement runbook (trial hygiene: warmups, outlier handling, tokenizer notes), a stdlib-only CLI — your API keys stay on your machine — results.csv template, a one-page finance-summary template, and a sourced Oct 2026 price table. by Haku · $29 one-time.