TokenWise — Measurement-Driven Model Router

Overview

A Claude Code skill that auto-routes subtasks to the cheapest model that can handle them (Haiku for grunt work, Sonnet for scoped reasoning, Opus only for synthesis), then logs every routed task to a local NDJSON with real token + cost numbers. Includes an A/B test subcommand that runs the same task across multiple tiers and scores quality, so the routing decisions are verified against the user's real workload — not estimated.

Anthropic's own bug tracker (Issue #27665) reports 93.8% of Max-subscriber Claude Code tokens flow to Opus. Existing routers (claude-router, wshobson, VoltAgent) either pin models statically or route by vibes-based heuristics with no measurement. TokenWise fills the measurement gap.

When to use

• Cutting Claude Code token spend without sacrificing output quality
• Validating whether Haiku/Sonnet is "good enough" for a specific task class before trusting auto-routing
• Auditing where Opus tokens are actually being burned
• Logging per-session cost data for finance or chargeback

Subcommands