{"version":"2.1.310","anchor":"model-alias-resolver-accepts-fable-and-drops-the-firstpart","canonical_anchor":"model-alias-resolver-accepts-fable-and-drops-the-firstpart","heading":"Short model names work beyond Anthropic's own API, and fable is recognised","tier":"use","area":"Models","scope":"both","heads_up":true,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.310\/e\/model-alias-resolver-accepts-fable-and-drops-the-firstpart","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.310","markdown":"### Short model names work beyond Anthropic's own API, and fable is recognised\n\nShort model names such as opus and sonnet are no longer limited to Anthropic's own API, and fable is now recognised as one\n\n**Unclear.** Whether you can choose fable as a model is not stated.\n\n**What**\n\nClaude Code turns short model names, such as opus, sonnet and haiku, into full model IDs. This conversion used to work only when you connected to Anthropic's own API. That restriction is gone, and the name fable is now recognised alongside the others. When a name is not found in Claude Code's own list, it is now looked up in a model catalog instead of being handled a fixed way.\n\n**Why**\n\nShort model names may now resolve when you use a third-party provider, and a new model family name, fable, appears.\n\n- Area: Models\n- Names: `fable`\n- Tier: Use it now\n- Useful: 5\/5\n- Signal: 5\/5\n- Scope: both\n- Heads-up: yes"}