Gemma 4

Google DeepMind's July 2026 open-weight multimodal family (Apache 2.0): 2.3B–31B dense plus a 26B/4B-active MoE, adding a thinking mode, an encoder-free 12B that discards its audio encoder entirely, and a deep inference-efficiency stack (−37.5% KV cache, QAT to sub-GB, MTP drafters); Arena rank 43, top *dense* open model