{"name":"xhigh","slug":"xhigh","family":"setting","title":"Settings keys","noun":"settings key","description":"The bundled Claude API skill docs now target the new Opus, covering thinking defaults, fallbacks and fast mode.","description_source":"entry","described_by":{"version":"2.1.219","anchor":"bundled-claude-api-skill-docs-rewritten-around-opus-5"},"presence":{"first_seen":null,"removed_in":null,"in_current_build":false,"newest_mined":"2.1.308","builds":0,"mined_builds":149,"first_cited":null},"aliases":[],"entries":[{"version":"2.1.293","anchor":"effort-levels-list-exported-alongside-tier-names","heading":"Effort levels are now defined in one shared list","line":"Claude Code now keeps one shared list of effort levels: low, medium, high, xhigh and max","released_at":"2026-10-07 17:18:04","reason":"found in this entry's text"},{"version":"2.1.290","anchor":"medium-and-high-effort-now-map-to-a-different-measured-profi","heading":"\/code-review medium now runs the high-effort recipe on most models","line":"On every model without its own `\/code-review` row, Opus 5.5 included, `medium` now runs the eight-angle high recipe instead of a single pass. `high`, `xhigh` and Opus 5 are unchanged.","released_at":"2026-10-05 18:12:44","reason":"found in this entry's text"},{"version":"2.1.284","anchor":"effort-no-longer-preselects-ultracode","heading":"\/effort no longer starts on ultracode when you open it","line":"The `\/effort` picker no longer jumps to ultracode as its first selection when ultracode is on","released_at":"2026-09-28 17:11:59","reason":"found in this entry's text"},{"version":"2.1.284","anchor":"ultracode-becomes-an-onoff-row-in-the-effort-picker-instea","heading":"Ultracode is now an on\/off switch that works with any effort level","line":"Ultracode is no longer an effort level that forces xhigh; 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