{"version":"2.1.283","anchor":"compiled-in-model-catalog-seed","canonical_anchor":"compiled-in-model-catalog-seed","heading":"A built-in copy of the model list for third-party provider sessions","tier":"notice","area":"Model Catalog","url":"https:\/\/changelogs.core-directive.com\/v\/2.1.283\/e\/compiled-in-model-catalog-seed","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.283","markdown":"### A built-in copy of the model list for third-party provider sessions\n\nClaude Code carries a built-in copy of its published model list, used by third-party provider sessions until they fetch the current one\n\n**Unclear.** How this built-in copy replaces the older samples and where it is read is not clear.\n\n**What**\n\nClaude Code now contains a built-in copy of its published model catalog, the list of models it offers. The copy lists Opus 5, Sonnet 5 and Haiku 4.5 and is marked version 0. A session that uses Claude through a third-party provider reads this copy until it first fetches the published catalog, and the copy also sets the lowest catalog version Claude Code accepts. The previous build instead carried larger catalog samples with other model IDs.\n\n**Why**\n\nThis sets which models appear in the model picker for third-party provider users before any catalog has been fetched.\n\n- Flag `tengu_delegated_quail`: Not enough to say (read for one account on one subscription tier against v2.1.283; this account: no value returned, anonymous baseline: no value returned, compiled default: not a boolean we can read) These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.\n- Area: Model Catalog\n- Tier: You'll notice\n- Useful: 3\/5\n- Signal: 4\/5"}