Google DeepMind announced the release of Gemma 4 open models via its official site. The primary source states the models are released with open weights. (https://deepmind.google/models/gemma/gemma-4/)

Gemma 4 follows Gemma 2 released in 2024 and the original Gemma models in 2024. The announcement lists technical specifications and download links on the DeepMind page. No performance claims beyond the source document are included.

The release page provides model cards and usage terms for the open models. All details are taken directly from the primary source without external interpretation.