{"version":"2.1.277","anchor":"model-catalog-version-bump-and-per-surface-model-reassignmen","canonical_anchor":"model-catalog-version-bump-and-per-surface-model-reassignmen","heading":"Model catalog version bump and per-surface model reassignment","tier":"internal","area":"Models","scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.277\/e\/model-catalog-version-bump-and-per-surface-model-reassignmen","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.277","markdown":"### Model catalog version bump and per-surface model reassignment\n\nBundled model catalog updated to version 629 with model reassignments across ccr, ccd, and other surfaces\n\n**Unclear.** The finding does not specify which surfaces ended up on which of the three models after this swap.\n\n**What**\n\nThe bundled model catalog that Claude Code ships with was updated from version 554 to version 629, with a new issue and expiry window. Several catalog surfaces, including `ccr` and `ccd`, had the model assigned to their existing slot swapped between `claude-fable-5-1`, `claude-sonnet-5`, and `claude-opus-5`.\n\n**Why**\n\nThis changes which model a given surface falls back to when using the bundled catalog, continuing the same kind of reassignment seen in earlier catalog updates for `ccr` and `ccd`.\n\n- Area: Models\n- Names: `claude-fable-5-1`, `claude-sonnet-5`, `claude-opus-5`\n- Tier: Under the hood\n- Useful: 2\/5\n- Signal: 3\/5"}