Use Kling v3 Standard for almost everything and Veo 3.1 Standard for the shot the piece depends on. The reason is one number: on the 8frame canvas a 5-second Kling v3 clip with audio is 86 credits and an 8-second Veo 3.1 Standard clip with audio is 448. Veo earns that premium on prompt adherence, which matters on a directed hero shot and matters much less on the fourteenth variant of a social cut.
The price table
Canon prices, a credit is $0.01 at pack rate:
| Model | Clip | With audio | Silent |
|---|---|---|---|
| Kling v3 Standard | 5s | 86 | 57 |
| Kling v3 Standard | 10s | 171 | 114 |
| Kling v3 Pro | 5s | 114 | 76 |
| Veo 3.1 Lite | 8s | 54 | 33 |
| Veo 3.1 Fast | 8s | 168 | 112 |
| Veo 3.1 Standard | 8s | 448 | 224 |
Note the silent column. Both families price audio as a real cost, roughly doubling the rate. If music is going over the piece anyway, generating silent halves the bill on either model.
Where Veo 3.1 wins
Prompt adherence. It reads cinematography vocabulary more literally than anything else we host. Ask for a slow push at eye level with a hard source from camera left, and you get those things rather than an interpretation. On a shot with a specific brief, that lowers your attempt count, which is where its price partly justifies itself.
Native audio quality. The audio it generates sits better with the picture than most.
The Lite tier. Frequently overlooked: at 54 credits for 8 seconds with audio, Veo 3.1 Lite is cheaper per second than Kling v3 with audio and shares the family's prompt behaviour. As a drafting tier it is excellent, and a prompt debugged on Lite carries up the ladder.
Where Kling v3 wins
Cost at volume. 86 against 448 is not a close call when you need fifteen variants.
Duration flexibility. Kling takes any integer from 3 to 15 seconds and bills per second; Veo 3.1 works at 4, 6 or 8. If your edit needs 7 seconds, one of these gives it to you.
Motion character. A subjective call and worth naming: Kling's motion tends to read as more energetic, Veo's as more controlled. Neither is better; they suit different briefs.
The routing that uses both
Draft on Veo 3.1 Lite at 33 credits silent until the prompt is right, since the prompt behaviour matches the full tier. Produce the volume on Kling v3 Standard. Render the one or two shots the piece hangs on with Veo 3.1 Standard.
A 30-second piece done this way: ten Lite drafts (330), six Kling finals with audio (516), two Veo Standard heroes (896). Around 1,742 credits, about $17. Producing everything on Veo Standard instead would be roughly 3,600.
What we have not measured
A controlled same-prompt quality comparison with scored results. We route between these daily and the claims above about adherence and motion character are working impressions rather than a measured benchmark. If you need certainty for your own brief, the twenty-minute method in how to test an AI video model will tell you more about your prompt than any general comparison.
FAQ
Which is better, Veo 3.1 or Kling v3? Veo for directed shots where the brief is specific, Kling for volume. The price gap is five to one, so the question is usually which shots deserve it rather than which model is better.
Is Veo 3.1 Lite good enough to ship? For social and b-roll at 720p, frequently yes. For a homepage hero, use the full tier.
Do both generate audio? Both make it optional and price it. Gemini Omni Flash is the one that always generates it. See Gemini Omni vs Veo 3.1.
Draft on Lite, produce on Kling, spend Veo Standard once. The 8frame canvas is free and unlimited, and generation is paid from $19/month.