{
  "study": "The AI Model Lifespan Tracker: We Dated Every API Model Retirement at OpenAI, Google and Anthropic",
  "url": "https://provenbrief.com/story/the-ai-model-lifespan-tracker-we-dated-every-api-model-retirement-at-openai-goog",
  "publisher": "ProvenBrief",
  "contentUpdatedAt": "2026-09-24T12:48:07.356Z",
  "terms": "Free to use with attribution to ProvenBrief and a link to the source page.",
  "tables": [
    {
      "key": "anthropic-lifespan",
      "title": "Claude flagship lifespans, by release",
      "measure": "Time from public release to API retirement",
      "unit": "months",
      "rows": [
        {
          "key": "claude-3-opus",
          "label": "Claude 3 Opus",
          "value": 22,
          "note": "approximate",
          "source": "https://platform.claude.com/docs/en/about-claude/model-deprecations",
          "group": "Anthropic"
        },
        {
          "key": "claude-3-5-sonnet",
          "label": "Claude 3.5 Sonnet",
          "value": 16,
          "note": "approximate",
          "source": "https://platform.claude.com/docs/en/about-claude/model-deprecations",
          "group": "Anthropic"
        },
        {
          "key": "claude-sonnet-4",
          "label": "Claude Sonnet 4",
          "value": 13,
          "source": "https://platform.claude.com/docs/en/about-claude/model-deprecations",
          "group": "Anthropic"
        },
        {
          "key": "claude-opus-4",
          "label": "Claude Opus 4",
          "value": 13,
          "source": "https://platform.claude.com/docs/en/about-claude/model-deprecations",
          "group": "Anthropic"
        },
        {
          "key": "claude-3-7-sonnet",
          "label": "Claude 3.7 Sonnet",
          "value": 12,
          "source": "https://platform.claude.com/docs/en/about-claude/model-deprecations",
          "group": "Anthropic"
        },
        {
          "key": "claude-opus-4-1",
          "label": "Claude Opus 4.1",
          "value": 12,
          "source": "https://platform.claude.com/docs/en/about-claude/model-deprecations",
          "group": "Anthropic"
        }
      ]
    },
    {
      "key": "notice-gap",
      "title": "Notice gaps: days from deprecation notice to scheduled shutdown",
      "measure": "Days between a lab's deprecation announcement and its scheduled API shutdown",
      "unit": "days",
      "rows": [
        {
          "key": "claude-3-opus-notice",
          "label": "Claude 3 Opus (Jun 30 2025 notice, Jan 5 2026 retirement)",
          "value": 189,
          "source": "https://platform.claude.com/docs/en/about-claude/model-deprecations",
          "group": "Anthropic"
        },
        {
          "key": "claude-3-haiku-notice",
          "label": "Claude 3 Haiku (Feb 19 to Apr 20 2026)",
          "value": 60,
          "source": "https://platform.claude.com/docs/en/about-claude/model-deprecations",
          "group": "Anthropic"
        },
        {
          "key": "claude-sonnet-4-opus-4-notice",
          "label": "Claude Sonnet 4 and Claude Opus 4 (Apr 14 to Jun 15 2026)",
          "value": 62,
          "source": "https://platform.claude.com/docs/en/about-claude/model-deprecations",
          "group": "Anthropic"
        },
        {
          "key": "claude-opus-4-1-notice",
          "label": "Claude Opus 4.1 (Jun 5 to Aug 5 2026)",
          "value": 61,
          "source": "https://platform.claude.com/docs/en/about-claude/model-deprecations",
          "group": "Anthropic"
        },
        {
          "key": "openai-legacy-audio-notice",
          "label": "OpenAI legacy audio and realtime batch (Jul 20 2026 to Jan 20 2027)",
          "value": 184,
          "source": "https://platform.openai.com/docs/deprecations",
          "group": "OpenAI"
        },
        {
          "key": "openai-transcription-notice",
          "label": "OpenAI transcription batch (Aug 26 2026 to Feb 26 2027)",
          "value": 184,
          "source": "https://platform.openai.com/docs/deprecations",
          "group": "OpenAI"
        },
        {
          "key": "openai-cyber-notice",
          "label": "OpenAI gpt-5.4-cyber (Sep 11 to Oct 1 2026)",
          "value": 20,
          "source": "https://platform.openai.com/docs/deprecations",
          "group": "OpenAI"
        }
      ]
    },
    {
      "key": "google-preview-penalty",
      "title": "Google GA models versus the preview median",
      "measure": "Scheduled lifespan from availability to earliest retirement",
      "unit": "months",
      "rows": [
        {
          "key": "gemini-2-0-flash",
          "label": "gemini-2.0-flash (GA)",
          "value": 16,
          "note": "approximate",
          "source": "https://ai.google.dev/gemini-api/docs/deprecations"
        },
        {
          "key": "gemini-2-5-flash-image",
          "label": "gemini-2.5-flash-image (GA)",
          "value": 12,
          "source": "https://ai.google.dev/gemini-api/docs/deprecations"
        },
        {
          "key": "gemini-3-1-flash-lite",
          "label": "gemini-3.1-flash-lite (GA)",
          "value": 12,
          "source": "https://ai.google.dev/gemini-api/docs/deprecations"
        },
        {
          "key": "preview-median",
          "label": "Preview tier (median)",
          "value": 6,
          "note": "median across ~25 dated preview entries",
          "source": "https://ai.google.dev/gemini-api/docs/deprecations"
        }
      ]
    }
  ]
}