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  "slug": "open-weights-vs-proprietary-arena-gap",
  "title": "Open Weights vs. Proprietary AI: The Gap Stays at 42 Points",
  "date": "2026-10-14",
  "canonical_url": "https://modevc.com/charts/open-weights-vs-proprietary-arena-gap/",
  "claim": "Open weights briefly beat every proprietary model in early 2025 (deepseek-r1); today the best open model trails by 42 points.",
  "takeaway": "A 42-point gap does not justify a 10× price premium for 80% of workflows.",
  "sources": [
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      "name": "Arena leaderboard dataset (lmarena-ai, CC BY 4.0)",
      "url": "https://huggingface.co/datasets/lmarena-ai/leaderboard-dataset"
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        "y": -9,
        "text": "DeepSeek R1 leads (-9 pts, 3 Feb 2025)",
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    ]
  }
}