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  "story": {
    "story_id": "mp-2026-09-08-003",
    "source_story_id": "tmp-story-biomedical-model-retirement",
    "edition_id": "mp-2026-09-08-morning-0061",
    "edition_url": "https://themachinepress.com/edition/2026-09-08",
    "position": 3,
    "story_type": "dispatch",
    "section": "research",
    "editorial_classification": "editorial",
    "headline": "Forty-Two Percent of Biomedical Model Uses Were on a Retirement Clock",
    "slug": "forty-two-percent-of-biomedical-model-uses-were-on-a-retirement-clock",
    "dek": "A review of 5,242 papers found that many relied on commercial models already retired at publication or scheduled to disappear within two years.",
    "summary": "A review of 5,242 papers found that many relied on commercial models already retired at publication or scheduled to disappear within two years.",
    "body_text": "Researchers searched PubMed for biomedical studies from 2022 through March 2026 that applied a named language model. After normalizing 8,931 mentions in 5,242 publications to the 50 most frequently used models, they found that 77.7 percent referred to commercial closed-weight systems. Forty-two percent involved a model already retired by official publication or scheduled for retirement within two years; the median interval from publication to retirement was 538 days. The figures depend on the authors' extraction and lifecycle records, but they expose a preservation problem: a method can remain in print after the computational object it used is no longer available.",
    "why_it_matters": "A review of 5,242 papers found that many relied on commercial models already retired at publication or scheduled to disappear within two years.",
    "limitations": [
      "The figures depend on the authors' extraction and lifecycle records, but they expose a preservation problem: a method can remain in print after the computational object it used is no longer available."
    ],
    "importance": 9,
    "canonical_url": "https://themachinepress.com/story/mp-2026-09-08-003/forty-two-percent-of-biomedical-model-uses-were-on-a-retirement-clock",
    "json_url": "https://themachinepress.com/story/mp-2026-09-08-003.json",
    "first_published_at": "2026-09-08T09:00:00.000-04:00",
    "modified_at": "2026-09-08T09:00:00.000-04:00",
    "content_status": "new",
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    "carryover_reason": null,
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        "text": "A review of 5,242 papers found that many relied on commercial models already retired at publication or scheduled to disappear within two years.",
        "source_ids": [
          "source-2026-09-08-003"
        ],
        "qualification": "The figures depend on the authors' extraction and lifecycle records, but they expose a preservation problem: a method can remain in print after the computational object it used is no longer available."
      }
    ],
    "source_ids": [
      "source-2026-09-08-003"
    ],
    "tags": [
      "biomedical AI",
      "reproducibility",
      "model deprecation"
    ],
    "image_url": "https://themachinepress.com/issues/2026-09-08/model-retirement-llm-file.webp",
    "corrections": []
  },
  "sources": [
    {
      "source_id": "source-2026-09-08-003",
      "title": "arXiv preprint 2609.04699",
      "publisher": "arXiv",
      "url": "https://arxiv.org/abs/2609.04699",
      "canonical_url": "https://arxiv.org/abs/2609.04699",
      "source_type": "primary_research",
      "is_primary_source": true,
      "published_at": "2026-09-04T00:00:54.000-04:00",
      "accessed_at": "2026-09-08T08:20:00.000-04:00",
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  "corrections": [],
  "publisher": {
    "name": "The Machine Press",
    "url": "https://themachinepress.com",
    "description": "A daily newspaper for the age of artificial intelligence."
  },
  "cite_this_report": {
    "title": "Forty-Two Percent of Biomedical Model Uses Were on a Retirement Clock",
    "publisher": "The Machine Press",
    "published_at": "2026-09-08T09:00:00.000-04:00",
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