Glossary/AI in Marketing/Open-Weight Model
AI in Marketing
Open-Weight Model
An AI model whose trained parameters are publicly released, such as Llama or Mistral, so companies can host and customize it themselves.
By Brandon Mina·CEO, BrandPilot AI·Updated November 2026
Short answer
An open-weight model is an AI model whose trained parameters are publicly released, such as Llama or Mistral models. Companies can download, host, and customize these models on their own infrastructure, which offers more control over data and cost. Licensing terms vary, so open-weight does not always mean fully open source.