The benchmark comparisons to Gemma 3 27B on Hugging Face are interesting: The Gemma 4 E4B variant (https://huggingface.co/google/gemma-4-E4B-it) beats the old 27B in every benchmark at a fraction of parameters.
The E2B/E4B models also support voice input, which is rare.
Thinking vs non-thinking. There'll be a token cost there. But still fairly remarkable!