Key strengths
- Veo 3.1 is useful for cinematic shots where prompt language includes camera movement, environment, mood, and sound cues.
- Veo 3.1 Fast gives a lower-latency path for draft generation before moving to the standard model.
- The interface enforces up to 3 reference images at 8MB each; when references are used, duration is fixed to 8 seconds to match the endpoint behavior.