AI Glossary

Open-weight model

Also called open-weights

What does “Open-weight model” mean?

Open-weight model: A model whose trained parameters are published for anyone to download, run and often modify. That differs from fully open-source AI, which would also release training data and code; licenses for open-weight models vary and may restrict some uses.

Open-weight model visual guide: A model whose trained parameters are published for anyone to download, run and often modify. That differs from fully open-source AI, which would also release training data and code; licenses for open-weight models vary and may restrict some uses.
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What is an example of “Open-weight model”?

Meta's Llama, Mistral's open models and DeepSeek's releases can be run on your own hardware, letting organizations keep sensitive data in-house.

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See also

WeightsTermFoundation modelTermSmall language modelTermHugging FaceTerm

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