Veo 3.1 is Google DeepMind's video generation model released in October 2025. Its most distinctive capability on the platform is native audio-visual co-generation: sound and video are generated simultaneously, making its dialogue lip sync accuracy and ambient sound realism difficult for other models to match. Maximum 8 seconds per generation, 1080p with 4K enhancement available.
Core Capabilities
- Native audio generation (dialogue, ambient sound, and background music all in one pass)
- Dialogue video: voiceover lip sync without any post-processing
- Product showcase video: smooth camera movement, highest visual quality of any video model on the platform
- Video extension: continue generating from the end of an existing video clip
Product Showcase Video Prompt
[camera movement] of [detailed product description], [lighting: soft studio lighting / dramatic backlighting / golden hour], [background: clean white surface / dark marble], [optional effect: particle effects / water splash / light refraction], [audio: elegant orchestral music / ambient city sounds / silence], [duration: 4 / 6 / 8] seconds.
Dialogue Video Prompt
A [medium / close-up] shot of [scene description]. [Ambient audio: café ambience / city background / quiet office]. [Character A description] says, '[dialogue A]'. [Character B description] replies, '[dialogue B]'.
Wrap dialogue in single quotes. The shorter each line of dialogue, the more accurate the lip sync. Long complex sentences reduce accuracy noticeably.
Camera Movement Quick Reference
slow push-in— gradual zoom into subject (common for product close-ups)slow orbit around— 360-degree rotation around subjectmacro close-up with shallow depth of field— extreme close-up with blurlow-angle tracking shot— low-angle follow shotoverhead pull-back— overhead angle zooming outstatic camera, subject movement— fixed camera, moving subject
Duration Selection Guide
- 4 seconds → Logo animations, simple product close-ups
- 6 seconds → Single-scene product showcases
- 8 seconds → Complete narrative, dialogue video, multi-scene transitions
For content longer than 8 seconds, generate in segments and edit together. Splitting by scene gives more predictable results than one long prompt.
About Pricing
Veo 3.1 uses platform credits charged per second: Fast mode is approximately $0.15/second, Standard mode is approximately $0.40/second. Disabling audio generation reduces cost by about 30%. For dialogue videos, Standard mode gives better lip sync accuracy.