showTurnDuration Setting — runtime test

Hands-on runtime battle-test of showTurnDuration Setting. Result: INCONCLUSIVE.

showTurnDuration Setting is a boolean runtime toggle that controls whether Claude Code displays "Cooked for Xm Ys" duration messages at the end of each turn.

How It Works

The setting defaults to true, displaying turn duration. Set showTurnDuration: false in settings.json to suppress duration output entirely. The implementation is a straightforward toggle with no side effects on other runtime behavior.

Test Setup and Result

This runtime test (Claude Code 2.1.7 on 2.1.9) designed a test scenario requiring three steps: (1) set showTurnDuration: false, (2) execute a prompt, (3) verify no duration message appeared. However, the test was never actually runtime-executed. The test report classified itself as "CODE REVIEW" and documented expected usage patterns without empirical verification. Result: INCONCLUSIVE. Runtime proof remains absent.

Use Cases

Users cite four motivations for suppressing duration: reducing terminal noise, hiding timing during screencasts or demos, minimizing CI log volume, and removing distractions during focused work.

Caveats

No empirical runtime evidence confirms the toggle works as specified. The setting lacks integration tests. Actual behavior under various Claude Code runtime states (streaming, parallel tool calls, error recovery) remains unmeasured. A complete manual or automated test run should precede any production assumption about this feature's reliability.

Primary source

⎘ 2.1.7/tests/02-show-turn-duration/TEST-RESULTS.mdverbatim from the corpus

Test Results: showTurnDuration Setting

Feature: Added showTurnDuration setting to hide turn duration messages

Tested: 2026-01-16 Version: 2.1.7 features on 2.1.9

Feature Description

New setting showTurnDuration controls whether "Cooked for Xm Xs" messages appear.

Default: true (shows duration) Set to false to hide.

Test Result: CODE REVIEW

Setting behavior is straightforward toggle. Would need to:

Set showTurnDuration: false in settings
Run a prompt
Verify no duration message appears

Expected Usage

// settings.json
{
  "showTurnDuration": false
}

Use Cases

Cleaner output - Less visual noise in terminal
Recording/demos - Don't show timing in screencasts
CI output - Reduce log noise in pipelines
Focus mode - Minimize distractions

Notes

Simple toggle. The "Cooked for" messages can be noisy for users who don't care about timing.

Status: CODE REVIEW

Evidence & receipt

file2.1.7/tests/02-show-turn-duration/TEST-RESULTS.md ↓

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Connected

verifies showTurnDuration Setting Primitive