{"version":"2.1.228","anchor":"more-models-now-show-a-deprecation-date","canonical_anchor":"more-models-now-show-a-deprecation-date","heading":"More models now show a deprecation date","tier":"notice","area":"Models","scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.228\/e\/more-models-now-show-a-deprecation-date","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.228","markdown":"### More models now show a deprecation date\n\nMore models now report a concrete deprecation date, including one named claude-mythos-preview.\n\n**What**\n\nThe deprecation-date table gains 3.5 Haiku, Opus 4 and 4.1, Sonnet 4 aliases and snapshots, and `claude-mythos-preview`, so those models report a concrete date instead of none.\n\n**Details**\n\n- Example entry: `claude-opus-4-1-20250805` is dated August 5th, 2026.\n\n**Evidence**\n\n`\"claude-opus-4-1-20250805\": \"August 5th, 2026\"`\n\n- Area: Models\n- Names: `claude-mythos-preview`\n- Tier: You'll notice\n- Useful: 3\/5\n- Signal: 5\/5"}