Veo 3.1 is Google's state-of-the-art video generation model, producing high-fidelity 8-second clips at up to 4K resolution with natively generated audio — dialogue, sound effects, and background music synchronized to the visuals. It supports text-to-video, image-to-video with up to three reference images, portrait and landscape framing (9:16, 16:9), frame-specific generation, and scene extension for creating longer videos exceeding one minute. The model offers greater narrative control with improved understanding of cinematic styles and richer native audio.