AI Video Generation on Sonna — Google Veo 3.1, Kling, and More
Google Veo 3.1 vs Kling 3.0 vs Grok Imagine: understand the differences, pick the right model, and get cinematic results from your first generation.
Sonna's video generation lineup covers everything from quick 720p social clips to 4K cinematic productions. With models from Google, Kuaishou, and xAI on a single platform, the challenge isn't finding a model — it's knowing which one to use for your specific project.
This guide covers every video model on Sonna, explains the billing systems, and gives you a clear framework for choosing the right model every time.
Understanding Video Billing: Flat vs Per-Second
Before comparing models, it helps to understand how video credits are calculated on Sonna — because different models use different billing approaches.
Flat-rate billing (Veo 3.1): You pay a fixed credit amount per clip, regardless of its length. The rate varies by resolution, not duration.
Per-second billing (Kling 3.0, Grok Imagine): You pay credits for each second of video generated. Longer clips cost proportionally more.
Per-clip billing (Kling 2.6, 2.5): You pay a fixed amount per generated clip, where the clip length tiers are predefined.
This distinction matters when planning credit usage. A 10-second Veo 3.1 Quality clip at 1080p costs the same as a 4-second one. A 10-second Kling 3.0 clip costs more than a 4-second one.
Google Veo 3.1 Family
Veo 3.1 is Google's state-of-the-art video generation model, and Sonna offers three tiers of it. All three use flat-rate billing per clip.
Veo 3.1 Quality
The highest-quality Veo tier delivers cinematic-grade video with exceptional motion coherence, realistic physics, and fine detail preservation. It's the best model on the platform for content where production quality is the primary concern.
Credit costs:
| Resolution | Credits per Clip |
|---|---|
| 720p | 19,400 cr |
| 1080p | 19,800 cr |
| 4K | 28,700 cr |
Use when: Brand films, product showcases, high-end content, any generation where quality is worth the premium cost.
Veo 3.1 Fast
Veo 3.1 Fast trades some quality for significantly reduced wait times. The output is still excellent — it simply processes faster and at lower credit cost than the Quality tier.
Credit costs:
| Resolution | Credits per Clip |
|---|---|
| 720p | 4,650 cr |
| 1080p | 5,050 cr |
| 4K | 13,950 cr |
Use when: Social media content, rapid iteration, projects where turnaround time matters as much as quality, most everyday video generation needs.
Veo 3.1 Lite
Veo 3.1 Lite is the most accessible Veo tier, designed for quick drafts, storyboarding, and high-volume output at the lowest cost in the Veo family.
Credit costs:
| Resolution | Credits per Clip |
|---|---|
| 720p | 2,350 cr |
| 1080p | 2,700 cr |
| 4K | 11,650 cr |
Use when: Storyboarding, concept drafts, testing prompts before committing to higher-cost generations, educational and experimental projects.
Kling Series (Kuaishou)
Kling models are known for their stylistic versatility and consistent character generation. Sonna offers the full Kling lineup from 2.1 through the latest 3.0.
Kling 3.0 — Per-Second Billing
Kling 3.0 is the latest and most capable Kling model. It uses per-second billing, giving you direct control over your credit spend by controlling clip duration.
Credit cost: 1,190–5,685 cr/sec depending on resolution and quality mode.
A 5-second clip at the standard rate costs between 5,950 and 28,425 credits depending on configuration. This makes it flexible — short clips for social content stay affordable, while longer cinematic sequences scale up accordingly.
Use when: Character-consistent video, stylized aesthetic outputs, scenes requiring strong motion dynamics.
Kling 2.6 — Per-Clip Billing
Kling 2.6 uses per-clip billing with defined duration tiers, making costs more predictable than per-second models.
Credit cost: 4,670–18,670 cr per clip.
Use when: Standard-length social clips, product demonstrations, content requiring Kling's signature style at a predictable credit cost.
Kling 2.5 Turbo Pro — Per-Clip Billing
Kling 2.5 Turbo Pro is a performance-tuned version of Kling 2.5 designed for faster processing with high visual quality.
Credit cost: 3,565–7,130 cr per clip.
Use when: You need Kling-quality output quickly, iterative production workflows, projects where speed and quality both matter.
Kling AI Avatar
Kling AI Avatar is a specialized model for generating talking head videos from a reference image. Provide a portrait and a script (or audio), and the model animates the subject with synchronized lip movements.
Use when: Personalized video messages, virtual spokesperson content, avatar-driven tutorials or announcements.
Kling Motion Control
Kling Motion Control adds camera movement direction to the video generation process. You can specify camera trajectories — pan, zoom, dolly, orbit — and the model will apply those movements to the generated footage.
Use when: Cinematic camera work, product reveals, any video where the camera movement itself is part of the creative direction.
Grok Imagine — Per-Second Billing
Grok Imagine from xAI uses per-second billing at 145–275 cr/sec. The lower end of the range makes it one of the more affordable per-second options on the platform for shorter clips.
Use when: Short-form video content, rapid experimentation, budget-conscious video generation where quality requirements are moderate.
Additional Video Tools
InfiniteTalk
InfiniteTalk is a video generation model specialized for long-form talking head and presentation-style video. It maintains subject consistency and lip sync across extended durations — useful for lecture recordings, explainer videos, and virtual presenter content.
Topaz Video Upscale
Topaz Video Upscale takes an existing video and increases its resolution using Topaz Labs' AI upscaling technology. Use it as a post-processing step after generation — upgrade a 720p draft to 1080p or 4K for final delivery without regenerating the clip from scratch.
Model Decision Guide
| Situation | Recommended Model |
|---|---|
| Maximum cinematic quality | Veo 3.1 Quality |
| Best everyday balance | Veo 3.1 Fast |
| Storyboarding / drafts | Veo 3.1 Lite |
| Character-consistent stylized video | Kling 3.0 |
| Predictable cost, social clips | Kling 2.6 |
| Fast Kling-quality output | Kling 2.5 Turbo Pro |
| Talking head / avatar video | Kling AI Avatar |
| Camera movement control | Kling Motion Control |
| Budget short-form clips | Grok Imagine |
| Long-form presenter video | InfiniteTalk |
| Upscaling existing clips | Topaz Video Upscale |
API Discount Note
The 10% API discount that applies to TTS, image, and music generation does not apply to video. Video generation is billed at the listed credit rates regardless of whether the request comes through the web app or the Developer API.
Credit Planning for Video
Video is the most credit-intensive feature on Sonna. Here's a quick reference for what different budgets can produce at 1080p:
| Plan / Credits | Veo 3.1 Fast (1080p) | Kling 2.6 (mid-range) |
|---|---|---|
| Pro — 102,000 cr | ~20 clips | ~8–21 clips |
| Max — 187,000 cr | ~37 clips | ~10–40 clips |
| PAYG Creator — 250,000 cr | ~49 clips | ~13–53 clips |
For heavy video production workflows, PAYG top-ups let you add credits as needed without upgrading your base plan.
See live pricing for all video models on the Models page.
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