Word.ws English Dictionary

open weights

open weights noun: publicly released model parameters of a trained neural network, allowing others to run or further adapt the model.

Noun

open weights (uncountable)

  1. (machine learning) Publicly released model parameters of a trained neural network, allowing others to run or further adapt the model.
    • The vast majority of LLMs that claim to be fully open source are actually just open weights and sometimes not even that.2025, Alessandro Benedetti, How Large Language Models Can Help Your Search Project, Springer Nature, →ISBN, page 28
    • 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...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
    Antonyms:
    closed weights

Antonyms of open weights

  • closed weights

Origin of open weights

After open source.

Questions about open weights

What does open weights mean?
Open weights means publicly released model parameters of a trained neural network, allowing others to run or further adapt the model.
What part of speech is open weights?
Open weights is a noun.

Words near open weights in the dictionary

  1. open washed
  2. open washes
  3. open washing
  4. open water
  5. open waters
  6. open weights
  7. open wheel
  8. open wide
  9. open world
  10. open worlds
  11. open wound

Source and license

Adapted from Wiktionary: open weights (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “open weights.” Word.ws, https://word.ws/open_weights. Based on Wiktionary, CC BY-SA 4.0.