{"version":"2.1.321","anchor":"fable-52-model-self-description-and-new-prompt-sections","canonical_anchor":"fable-52-model-self-description-and-new-prompt-sections","heading":"Claude Fable 5.2 self-description and new instructions on finishing work and memory","tier":"internal","area":"System Prompt","scope":"individual","heads_up":false,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.321\/e\/fable-52-model-self-description-and-new-prompt-sections","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.321","markdown":"### Claude Fable 5.2 self-description and new instructions on finishing work and memory\n\nClaude Code adds text naming the model as Claude Fable 5.2, plus instructions on not stopping early and on what to save as memories\n\n**Unclear.** Whether these instructions are always sent or depend on a remote setting is not known.\n\n**What**\n\nThe instructions Claude Code can give the model gain new text. Before, only text describing Claude Fable 5.1 was present.\n\n- A description saying the model is Claude Fable 5.2, the newest Claude 5 model.\n\n- A \"Finishing work\" section telling the model not to stop while work it still owes remains.\n\n- A \"Memory, notes and feedback\" section telling it to save only lasting, useful memories and not records of work already done.\n\n**Why**\n\nThese instructions change when the model decides it is done and what it chooses to remember between sessions.\n\n- Area: System Prompt\n- Tier: Under the hood\n- Useful: 2\/5\n- Signal: 3\/5\n- Scope: individual\n- Heads-up: no"}