PromptLedger

Per-prompt cost and usage tracking for AI creative tools

Know what every AI generation actually costs you. Runway, ElevenLabs, and other AI creative tools bill in credits, characters, and GPU time — deliberately opaque units that never tell you what a single prompt cost. PromptLedger watches your generations as you work and turns them into a clear, per-prompt spend ledger, in real money. No accounts. No servers. No telemetry. Everything stays in your browser. WHAT IT DOES — Logs every generation automatically: the prompt, model, credits used, and dollar cost — Converts credits to real money using your actual plan rate (detected from your billing page, or set it yourself) — Dashboard with a filterable history, spend-over-time and spend-by-tool charts, and one-click CSV export — Project tags so you can group generations by client or job — and tag past work retroactively — Budget alerts: set daily or monthly limits per tool and get a browser notification before you overspend, in your preferred currency — A capture-health indicator that tells you if a tool's site changed and tracking needs attention, instead of silently losing data SUPPORTED TOOLS — Runway — credits per generation. Fully supported. — ElevenLabs — characters/credits per generation, including Text to Speech and Studio. Fully supported. — Midjourney — experimental. Midjourney's web app doesn't expose a per-generation balance, so costs may be missing or incomplete. We're actively working on it. BUILT FOR Freelancers and studios who bill clients for AI work, and anyone who wants to stop guessing where their credits go. Tag by project, export to CSV, and put a real number on every prompt. PRIVATE BY DESIGN PromptLedger reads prompt text and credit balances only from the pages you already have open, and stores everything locally on your device. Nothing is ever uploaded. See our privacy policy for details.