Open formula. Browser-based calculations. Source-dated rates. No API keys. No provider login. No tracing SDK. No account required. Input payloads are not stored.
Pricing source date: 2026-08-17 · Build verification: 2026-08-17 · Stale threshold: 30 days. Pricing table reviewed 2026-08-17: current LLM and GPU rows were refreshed from official provider sources and known endpoint retirements were reflected. Vector-store and observability rows remain normalized planning estimates where vendor billing dimensions do not map one-to-one to Model Ruler inputs; verify each provider rate card before contracts, production commitments, or budget approvals.
Model Ruler estimates AI architecture cost from user-provided assumptions: token volume, calls, context growth, cache behavior, retries, tool calls, automation-platform units, eval runs, observability volume, and self-host utilization.
Use these estimates for planning. Verify current provider rates and infrastructure terms before contracts or production commitments.