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    "story_id": "mp-2026-08-18-018",
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    "headline": "The Retrieval Channel Got a Smaller Pipe",
    "slug": "the-retrieval-channel-got-a-smaller-pipe",
    "dek": "GRIP bottlenecks evidence so it carries information the full-capacity query representation does not already contain.",
    "summary": "GRIP bottlenecks evidence so it carries information the full-capacity query representation does not already contain.",
    "body_text": "Across five reasoning benchmarks, the authors report roughly a 30-fold drop in a query-latent mutual-information diagnostic and a 73 percent reduction in hallucination relative to their baselines. The capacity asymmetry targets query dominance, but benchmark improvements do not guarantee grounding on arbitrary corpora.",
    "why_it_matters": "GRIP bottlenecks evidence so it carries information the full-capacity query representation does not already contain.",
    "limitations": [
      "The capacity asymmetry targets query dominance, but benchmark improvements do not guarantee grounding on arbitrary corpora."
    ],
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    "first_published_at": "2026-08-18T09:00:00.000-04:00",
    "modified_at": "2026-08-18T09:00:00.000-04:00",
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        "text": "GRIP bottlenecks evidence so it carries information the full-capacity query representation does not already contain.",
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        "qualification": "The capacity asymmetry targets query dominance, but benchmark improvements do not guarantee grounding on arbitrary corpora."
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    "tags": [
      "RAG",
      "grounding",
      "hallucination"
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  "sources": [
    {
      "source_id": "source-2026-08-18-020",
      "title": "arXiv preprint 2608.16776",
      "publisher": "arXiv",
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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": "The Retrieval Channel Got a Smaller Pipe",
    "publisher": "The Machine Press",
    "published_at": "2026-08-18T09:00:00.000-04:00",
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