Google DeepMind chief Koray Kavukcuoglu said on September 24, 2026 that Gemini 4 is in post-training and that Google wants an early build as soon as possible, much earlier than the end of 2026. He did not name a Pro SKU or a ship date. Community arena clips labeled Gemini 4 Pro, often under a Gemini 3.8 Flash nickname, are unverified. Gemini 3.8 Flash is a separate model Google already shipped on September 2, 2026.