Gemini 3.1 lands on Google Home; 'AI Ultra Lite' tier and Gemma 4 speculative-decoding leak

Google Home upgraded to Gemini 3.1, enabling multi-step commands and better recurring/all-day event handling. App teardowns point to a cheaper 'AI Ultra Lite' plan with explicit usage limits and a major upgrade to 'Gemini Agent' as a 24/7 digital partner ahead of I/O. Gemma 4 also gains Multi-Token Prediction speculative-decoding drafters, claiming up to 3x faster local inference.