Meta’s Llama community license is a custom license, not an OSI-approved open source license. Among its conditions, companies whose products exceed 700 million monthly active users must request a separate license from Meta, which “Meta may grant to you in its sole discretion.” The license also forbids using Llama outputs to improve other large language models. These usage-based and competitive restrictions place the Llama license outside the standard definition of open source, which is why careful writers describe Llama as “open weights” rather than “open source.”