{
  "$schema": "https://modeldeprecations.dev/api/v1/schema.json",
  "provider": "anthropic",
  "model": "claude-1.2",
  "name": "Claude 1.2",
  "aliases": [],
  "description": "The third Claude 1 point release, and the one many early integrations pinned because it was the current default when the API opened more widely. Retired November 2024 with the rest of the line.",
  "deprecated_on": "2024-09-04",
  "shutdown_on": "2024-11-06",
  "status": "retired",
  "replacements": [
    {
      "provider": "anthropic",
      "model": "claude-haiku-4-5-20251001",
      "recommended": true,
      "note": "Two generations and a whole API separate these. Claude 1 predates the Messages API, so a migration means moving off /v1/complete and its \"\\n\\nHuman:\"/\"\\n\\nAssistant:\" prompt format entirely.",
      "external": false
    }
  ],
  "sources": [
    {
      "url": "https://platform.claude.com/docs/en/about-claude/model-deprecations",
      "title": "Anthropic model deprecations",
      "accessed": "2026-07-30"
    }
  ],
  "last_verified": "2026-07-30",
  "computed_status": "retired",
  "asOf": "2026-07-30"
}