{
  "$schema": "https://modeldeprecations.dev/api/v1/schema.json",
  "provider": "anthropic",
  "model": "claude-sonnet-4-20250514",
  "name": "Claude Sonnet 4",
  "aliases": [
    "claude-sonnet-4-0"
  ],
  "description": "The workhorse of the Claude 4 generation, and for a year the default in Claude Code. Retired June 15, 2026 in the same announcement as Opus 4.",
  "released_on": "2025-05-14",
  "deprecated_on": "2026-04-14",
  "shutdown_on": "2026-06-15",
  "status": "retired",
  "replacements": [
    {
      "provider": "anthropic",
      "model": "claude-sonnet-4-6",
      "recommended": true,
      "note": "Sonnet 4.6 keeps the same pricing and raises the context window to 1M tokens. Its adaptive thinking replaces the explicit thinking budget Sonnet 4 used, so any code setting thinking.budget_tokens needs review.",
      "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"
}