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    "story_id": "mp-2026-09-06-008",
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    "headline": "A Four-Billion-Parameter Model Recovered Nearly All the UI Teacher's Score",
    "slug": "a-four-billion-parameter-model-recovered-nearly-all-the-ui-teacher-s-score",
    "dek": "Catalog-conditioned fine-tuning reached roughly 98 percent of teacher semantic quality and 97 percent of visual quality at far lower reported cost.",
    "summary": "Catalog-conditioned fine-tuning reached roughly 98 percent of teacher semantic quality and 97 percent of visual quality at far lower reported cost.",
    "body_text": "The study evaluates declarative interface generation, where a model selects approved components and binds data rather than writing arbitrary frontend code. Across two React and TypeScript domains, the 4B student retained nearly all measured teacher quality at more than an order of magnitude lower cost. Perturbed-catalog and constrained-ground-truth training each improved the quality-cost frontier in different ways. The result is specific to the tested component catalogs, domains, checkpoints and scoring system.",
    "why_it_matters": "Catalog-conditioned fine-tuning reached roughly 98 percent of teacher semantic quality and 97 percent of visual quality at far lower reported cost.",
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    "importance": 8,
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    "first_published_at": "2026-09-06T09:00:00.000-04:00",
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        "text": "Catalog-conditioned fine-tuning reached roughly 98 percent of teacher semantic quality and 97 percent of visual quality at far lower reported cost.",
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    "tags": [
      "declarative UI",
      "small models",
      "component catalogs"
    ],
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  "sources": [
    {
      "source_id": "source-2026-09-06-008",
      "title": "arXiv preprint 2609.04184",
      "publisher": "arXiv",
      "url": "https://arxiv.org/abs/2609.04184",
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      "published_at": "2026-09-03T13:58:09.000-04:00",
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  "publisher": {
    "name": "The Machine Press",
    "url": "https://themachinepress.com",
    "description": "A daily newspaper for the age of artificial intelligence."
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  "cite_this_report": {
    "title": "A Four-Billion-Parameter Model Recovered Nearly All the UI Teacher's Score",
    "publisher": "The Machine Press",
    "published_at": "2026-09-06T09:00:00.000-04:00",
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