Cut your Claude Code cost by 90% using the Spotify Method

Tl;dr: use a plugin that uses another model, so that you don't use an expensive model's read token costs. engineering.atspotify.com/2026/9/portal...y-cut-my-claude-code-token-usage-by-90 Try it yourself Install both plugins from the spotify/portal-ai-plugins marketplace: claude plugin marketplace add spotify/portal-ai-plugins claude plugin install portal@portal claude plugin install shunt@portal. The portal plugin provides the Portal CLI that shunt delegates through. In a new Claude Code session, run /portal:setup to set up and authenticate the Portal CLI against your Portal instance. You’re good to go, just ask a question that spans multiple files. The bulk-reader and code-writer modes are already public, so there is nothing to create. If you want to customize them - different worker model, different instructions - fork them in Portal and your version takes precedence automatically. The modes are reusable across projects and shareable with your team. The plugin enforces the routing so you don't have to think about it.