{"name":"opus","slug":"opus","family":"setting","title":"Settings keys","noun":"settings key","description":"Opus 5 is now the default Opus, with a 1M-context option in the model picker.","description_source":"entry","described_by":{"version":"2.1.219","anchor":"opus-5-replaces-opus-4-8-as-the-default-opus-model"},"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":"2.1.307","anchor":"plugin-refresh-announces-fresh-loads-subtask-refactor-wri","heading":"Plugin refresh, \/subtask and a new writer setting","line":"Plugin refresh now marks fresh loads, `\/subtask` was reorganised, and settings gain a `writer` entry with `fable` and `opus` values","released_at":"2026-10-21 20:47:18","reason":"found in this entry's text"},{"version":"2.1.284","anchor":"model-family-aliases-resolve-to-the-first-listed-model-not","heading":"Model aliases like opus now pick the first matching model in a configured list","line":"With a configured model list, opus, sonnet and haiku now map to the first model of that family in the list, not the canonical claude- ID","released_at":"2026-09-28 17:11:59","reason":"found in this entry's text, named in this entry"},{"version":"2.1.282","anchor":"model-picker-descriptions-take-the-opussonnet-display-name","heading":"Model picker now names the current Opus model instead of a fixed version","line":"The Opus entries in the model picker now take their name from whatever model `opus` currently points to, rather than always saying Opus 5.5","released_at":"2026-09-24 15:56:22","reason":"found in this entry's text"},{"version":"2.1.219","anchor":"opus-5-replaces-opus-4-8-as-the-default-opus-model","heading":"Opus 5 replaces Opus 4.8 as the default Opus model","line":"Opus 5 is now the default Opus, with a 1M-context option in the model picker.","released_at":"2026-07-24 16:11:49","reason":"named in this entry, found in this entry's text"},{"version":"2.1.219","anchor":"the-api-skill-s-model-placeholders-now-resolve-to-claude-opu","heading":"The API skill's model placeholders now resolve to Claude Opus 5, with the previous Opus kept as a separate placeholder","line":"The API skill's model placeholders now render Opus 5, keeping the previous Opus named separately.","released_at":"2026-07-24 16:11:49","reason":"found in this entry's text"},{"version":"2.1.219","anchor":"model-picker-drops-the-requires-usage-credits-suffix-and-the","heading":"Model picker drops the \"Requires usage credits\" suffix and the manual 1M relabel","line":"The model picker now shows labels straight from the model data, without extra credit or context suffixes.","released_at":"2026-07-24 16:11:49","reason":"found in this entry's text"},{"version":"2.1.196","anchor":"model-alias-resolution","heading":"Model Alias Resolution","line":null,"released_at":"2026-06-29 20:08:58","reason":"found in this entry's text"},{"version":"2.1.196","anchor":"fast-mode-model-scope-narrowed","heading":"Fast Mode Model Scope Narrowed","line":null,"released_at":"2026-06-29 20:08:58","reason":"found in this entry's text"},{"version":"2.1.195","anchor":"model-catalog-new-and-updated-models","heading":"Model Catalog: New and Updated Models","line":null,"released_at":"2026-06-26 18:16:23","reason":"found in this entry's text"},{"version":"2.1.67","anchor":"automatic-legacy-opus-model-string-migration","heading":"Automatic Legacy Opus Model String Migration","line":null,"released_at":"2026-03-04 05:31:10","reason":"found in this entry's text"}],"entries_total":11,"docs":[{"source":"api","path":"about-claude\/model-deprecations","title":"model-deprecations","documented":false},{"source":"api","path":"about-claude\/models\/choosing-a-model","title":"choosing-a-model","documented":false},{"source":"api","path":"about-claude\/models\/migration-guide","title":"Or, for the model with the same capabilities and no access approval requirement:","documented":false},{"source":"api","path":"about-claude\/models\/model-ids-and-versions","title":"model-ids-and-versions","documented":false},{"source":"api","path":"about-claude\/models\/optimizing-for-cost-and-intelligence","title":"optimizing-for-cost-and-intelligence","documented":false},{"source":"api","path":"about-claude\/pricing","title":"pricing","documented":false},{"source":"api","path":"about-claude\/use-case-guides\/content-moderation","title":"content-moderation","documented":false},{"source":"api","path":"about-claude\/use-case-guides\/customer-support-chat","title":"customer-support-chat","documented":false},{"source":"api","path":"about-claude\/use-case-guides\/legal-summarization","title":"legal-summarization","documented":false},{"source":"api","path":"about-claude\/use-case-guides\/ticket-routing","title":"ticket-routing","documented":false}],"docs_total":12,"gates":[],"related":[],"url":"https:\/\/changelogs.core-directive.com\/reference\/setting\/opus","family_url":"https:\/\/changelogs.core-directive.com\/reference\/setting.json"}