Google Veo
Veo 3.1 is the video model to measure others against on sound: dialogue and effects come out of the same generation, so a clip is usable without a separate audio pass. The catch is access — you are choosing between a Google AI subscription metered in Flow credits and a per-second API bill where a single 8-second 4K clip on the Standard model costs nearly five dollars. Fine for finished shots, expensive for exploration unless you draft on Lite or Fast.
Pros
- Audio — effects, ambience, dialogue — is generated natively with the video
- 1080p and 4K output with reference-image and first/last-frame control
- Three API price points (Lite, Fast, Standard) let you draft cheaply and render once
- Reachable in the Gemini app, Flow, Vids, AI Studio and the Gemini API from one Google account
Cons
- No free tier for the API; every Veo variant is paid-only
- Per-second API billing: Standard 4K costs $0.60 a second
- Consumer access is metered in Flow credits that vary by plan and region
- Clips are short (benchmarks cite 8 seconds), so longer pieces need extension passes