"open weights" meaning in English

{
  "etymology_text": "After open source.",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "antonyms": [
        {
          "word": "closed weights"
        }
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          "langcode": "en",
          "name": "Machine learning",
          "orig": "en:Machine learning",
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          "source": "w"
        }
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            [
              79,
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          "ref": "2025, Alessandro Benedetti, How Large Language Models Can Help Your Search Project, Springer Nature, →ISBN, page 28:",
          "text": "The vast majority of LLMs that claim to be fully open source are actually just open weights and sometimes not even that.",
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              128
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          "ref": "2025 August 5, Katelyn Chedraoui, “OpenAI's New Models Aren't Really Open: What to Know About Open-Weights AI”, in CNET, archived from the original on 30 Aug 2025:",
          "text": "OpenAI just dropped two new open-weights models. Here's why that isn't the same as being fully open. […] Basically, open-weights is a category of AI models that power products like chatbots, image and video generators.[…] Open-weights models give us a peek at the mechanical wizard behind the curtain, so to speak.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Freely available final weights and biases of a trained neural network, such as a large language model."
      ],
      "id": "en-open_weights-en-noun-VCS5VgNR",
      "links": [
        [
          "machine learning",
          "machine learning"
        ],
        [
          "weight",
          "weight"
        ],
        [
          "bias",
          "bias"
        ],
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          "neural network",
          "neural network"
        ],
        [
          "large language model",
          "large language model"
        ]
      ],
      "qualifier": "machine learning",
      "raw_glosses": [
        "(machine learning) Freely available final weights and biases of a trained neural network, such as a large language model."
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "open weights"
}

{
  "etymology_text": "After open source.",
  "head_templates": [
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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      "antonyms": [
        {
          "word": "closed weights"
        }
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        "en:Machine learning"
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            [
              79,
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            ]
          ],
          "ref": "2025, Alessandro Benedetti, How Large Language Models Can Help Your Search Project, Springer Nature, →ISBN, page 28:",
          "text": "The vast majority of LLMs that claim to be fully open source are actually just open weights and sometimes not even that.",
          "type": "quotation"
        },
        {
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            [
              28,
              40
            ],
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              116,
              128
            ],
            [
              222,
              234
            ]
          ],
          "ref": "2025 August 5, Katelyn Chedraoui, “OpenAI's New Models Aren't Really Open: What to Know About Open-Weights AI”, in CNET, archived from the original on 30 Aug 2025:",
          "text": "OpenAI just dropped two new open-weights models. Here's why that isn't the same as being fully open. […] Basically, open-weights is a category of AI models that power products like chatbots, image and video generators.[…] Open-weights models give us a peek at the mechanical wizard behind the curtain, so to speak.",
          "type": "quotation"
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      ],
      "glosses": [
        "Freely available final weights and biases of a trained neural network, such as a large language model."
      ],
      "links": [
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          "machine learning",
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          "weight",
          "weight"
        ],
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          "bias",
          "bias"
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      "qualifier": "machine learning",
      "raw_glosses": [
        "(machine learning) Freely available final weights and biases of a trained neural network, such as a large language model."
      ],
      "tags": [
        "uncountable"
      ]
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  ],
  "word": "open weights"
}