{"version":"2.1.223","anchor":"1m-context-and-compaction-checks-now-go-through-model-capabi","canonical_anchor":"1m-context-and-compaction-checks-now-go-through-model-capabi","heading":"1M-context and compaction checks now go through model capability lookup","tier":"use","area":"Compaction","scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.223\/e\/1m-context-and-compaction-checks-now-go-through-model-capabi","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.223","markdown":"### 1M-context and compaction checks now go through model capability lookup\n\nLong-context eligibility is now looked up per model, and DISABLE_COMPACT turns off compaction.\n\n**What**\n\nLong-context eligibility resolves the canonical model id before deciding, and compaction has its own companion check.\n\n**Details**\n\n- `claude-mythos-preview` is treated as eligible alongside any model whose capability record declares native 1M context.\n- The companion helper disables compaction when `DISABLE_COMPACT` is set, or when the resolved model id does not start with `claude-`.\n\n**Evidence**\n\n`claude-mythos-preview`\n\n- Area: Compaction\n- Names: `DISABLE_COMPACT`\n- Tier: Use it now\n- Useful: 3\/5\n- Signal: 0\/5"}