Claude Code 2.1.237 Adds Concise Output Mode, Fixes Gateway Caching Bug

On August 20, Claude Code shipped version 2.1.237, adding a built-in Concise output style and fixing a prompt-caching bug affecting LLM gateway and custom base URL users.

Confirmed

• The new Concise output mode makes Claude lead with results and keep replies short, expanding detail only when asked, without losing key information.
• It can be enabled via /config → Output style or by setting "outputStyle": "Concise" in the settings file.
• The update fixes a prompt caching issue when using LLM gateways or custom base URLs, preventing stale responses.
• Per @danielmac8, developer Boris was involved in discussions around the feature.

Why it matters

Concise mode reduces information noise for terminal users who only care about task completion, while the caching fix is critical for enterprise users relying on self-hosted gateways who previously could receive stale content.

2026-08-20 ~ 2026-08-22 · 7 related posts

• Claude Code adds Concise output style: result first, shorter responses — EricBuess · 2026-08-20
• [source] Claude Code 2.1.237: Fixes caching, adds Concise mode — ClaudeCodeLog · 2026-08-20
• Claude Code adds 'Concise' output style to prioritize results — daniel_mac8 · 2026-08-20
• [source] Claude Code adds native 'Concise' output style — daniel_mac8 · 2026-08-20
• Claude Code adds 'Concise' mode for direct results — ctjlewis · 2026-08-22

2 near-duplicate retellings: EricBuess · FinanceYF5