{"version":"2.1.288","anchor":"legacy-claude-3-models-list-added","canonical_anchor":"legacy-claude-3-models-list-added","heading":"Claude Code now groups the older Claude 3 models together","tier":"internal","area":"Models","scope":"individual","heads_up":false,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.288\/e\/legacy-claude-3-models-list-added","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.288","markdown":"### Claude Code now groups the older Claude 3 models together\n\nClaude Code now keeps a list of the older Claude 3 models and a check for whether the current model is outside it\n\n**Unclear.** What part of Claude Code uses this check, and so whether anything behaves differently on these models, is not stated.\n\n**What**\n\nClaude Code now keeps the older Claude 3 models in a single list:\n\n- `claude-3-opus`\n\n- `claude-3-sonnet`\n\n- `claude-3-haiku`\n\nAlongside it is a check that answers whether the model in use is not one of these three.\n\n**Why**\n\nThis gives Claude Code a simple way to tell these older models apart from newer ones.\n\n- Area: Models\n- Tier: Under the hood\n- Useful: 1\/5\n- Signal: 1\/5\n- Scope: individual\n- Heads-up: no"}