{
  "$schema": "https://modeldeprecations.dev/api/v1/schema.json",
  "provider": "anthropic",
  "model": "claude-opus-4-1-20250805",
  "name": "Claude Opus 4.1",
  "aliases": [
    "claude-opus-4-1"
  ],
  "description": "The August 2025 Opus, and the last Anthropic model priced at $15/$75 per million tokens — three times what Opus costs today. It is the only deprecated Anthropic model still answering requests, and it has days left.",
  "released_on": "2025-08-05",
  "deprecated_on": "2026-06-05",
  "shutdown_on": "2026-08-05",
  "status": "deprecated",
  "replacements": [
    {
      "provider": "anthropic",
      "model": "claude-opus-4-8",
      "recommended": true,
      "note": "Opus 4.7 and later reject temperature, top_p and top_k with a 400 error when set to a non-default value. Remove them from the request rather than tuning them down. Opus 4.8 also defaults effort to high on every surface, so set it explicitly if you were relying on a cheaper default.",
      "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": "deprecated",
  "asOf": "2026-07-30"
}