Its literally described as open source all over.
https://www.databricks.com/blog/announcing-dbrx-new-standard...
Its even implied in comparisons everywhere:
> Figure 1: DBRX outperforms established open source models on language understanding (MMLU), Programming (HumanEval), and Math (GSM8K).
> The aforementioned three reasons lead us to believe that open source LLMs will continue gaining momentum. In particular, we think they provide an exciting opportunity for organizations to customize open source LLMs that can become their IP, which they use to be competitive in their industry.
Just search "open source".