Claude Code 2.1.237 Adds a Built-In "Concise" Output Style and Fixes Prompt Caching Behind LLM Gateways
Claude Code Changelog·medium signal
Claude Code 2.1.237 landed 2026-08-20 with a built-in Concise output style where, per the changelog, "Claude leads with results and skips preamble and narration". It also fixes prompt caching for sessions running through an LLM gateway or custom base URL. That caching fix matters for anyone proxying Claude Code through a gateway, since a broken cache there means paying full input cost on every turn without any visible error.