{"name":"modelSettings.autoCompactWindow","slug":"modelsettings-autocompactwindow","family":"setting","title":"Settings keys","noun":"settings key","description":"A new usage report records the auto-compact window in force and where it came from, such as an environment variable, a setting or the default","description_source":"entry","described_by":{"version":"2.1.300","anchor":"telemetry-for-the-auto-compact-window-in-force"},"presence":{"first_seen":null,"removed_in":null,"in_current_build":false,"newest_mined":"2.1.309","builds":0,"mined_builds":150,"first_cited":{"version":"2.1.300","released_at":"2026-10-14 14:27:26","spans":1}},"aliases":[],"entries":[{"version":"2.1.300","anchor":"telemetry-for-the-auto-compact-window-in-force","heading":"Claude Code now reports which setting decides when it compacts","line":"A new usage report records the auto-compact window in force and where it came from, such as an environment variable, a setting or the default","released_at":"2026-10-14 14:27:26","reason":"found in this entry's text"},{"version":"2.1.300","anchor":"modelsettingsautocompactwindow-is-now-reported-as-a-setting","heading":"Claude Code now notes when a per-model auto-compact window is set","line":"Claude Code's list of settings in use now includes `autoCompactWindow` when it is set for any model under `modelSettings`","released_at":"2026-10-14 14:27:26","reason":"named in this entry, found in this entry's text"}],"entries_total":2,"docs":[],"docs_total":0,"gates":[],"related":[{"name":"modelSettings","slug":"modelsettings","description":"Keep a saved [effort level](\/docs\/en\/model-config.md#adjust-effort-level) or [auto-compact window](\/docs\/en\/model-config.md#set-the-auto-compact-window) per model, or cap one model's effort"}],"url":"https:\/\/changelogs.core-directive.com\/reference\/setting\/modelsettings-autocompactwindow","family_url":"https:\/\/changelogs.core-directive.com\/reference\/setting.json"}