Correction, 2026-10-02: this page grouped Hailuo H3 and Happy Horse with the models that make no sound. They have no audio setting on 8frame, but every H3 and Happy Horse file we checked in 8frame's media data (completed generations of the last 120 days) has an audio track, and MiniMax describes H3 as generating native stereo audio. The summary, the table and the FAQ now say so.
Correction, 2026-09-30: the first version missed Creatify Boreal, Kling O3 and Pruna's p-video models. Boreal always generates sound and, at 7 credits for 5 seconds at 720p, is the cheapest sound per second we can confirm on 8frame; we had named Veo 3.1 Lite. Kling O3 charges for audio but starts silent. An update earlier today also listed Pruna p-video as audio input only: it generates sound too, as the provider's own example outputs show. All are corrected below.
On 8frame, sound works three different ways depending on the model. Veo 3.1, Kling v3 and Kling 2.6 Pro generate audio by default and charge for it: switching it off saves between a third and a half (half on Veo 3.1 and Kling 2.6 Pro, about a third on Kling v3 and Veo 3.1 Fast). Kling O3 charges for audio too, but starts with it off. Seedance and Wan 3.0 Prime generate audio by default but charge the same either way. Grok Imagine, Gemini Omni Flash, Creatify Boreal and Pruna's p-video and p-video 2 Pro always add sound and cannot be switched to silent on 8frame. The cheapest sound per second we can confirm is Creatify Boreal at 720p: 1.35 credits a second, 7 for 5 seconds. Pruna p-video Draft costs about half that per second, and the provider saves sound by default, but we have not confirmed that draft output keeps it. (Boreal and Pruna are new to 8frame, so we quote their prices, not their quality.) Among established models, Grok Imagine at 480p and Veo 3.1 Lite both work out to 6.75 credits a second: 34 for 5 seconds on Grok, 27 for Veo Lite's shortest clip of 4 seconds. Wan 3.0 Prime at 480p is next at 46 for 5 seconds. These are the settings 8frame sends to each provider, read from its own configuration.
TL;DR
- Audio costs extra, and can be switched off: Veo 3.1 (all tiers), Kling v3, Kling 2.6 Pro, and Kling O3 (off by default)
- Audio included at the same price, and can be switched off: Seedance 2.5 and 2.0, Wan 3.0 Prime
- Audio always on: Grok Imagine, Gemini Omni Flash, Creatify Boreal, Pruna p-video and p-video 2 Pro
- No audio setting on 8frame: Hailuo H3, Happy Horse, base Wan 3.0, Wan 2.5 and 2.2, Runway Gen-4 Turbo. No setting is not no sound: every Hailuo H3 and Happy Horse file we checked comes with an audio track, so listen to the file
- Cheapest confirmed with sound: Creatify Boreal, 7 credits for 5 seconds at 720p; among established models, Grok Imagine at 480p and Veo 3.1 Lite, both 6.75 credits a second
Every model, one table
| Model on 8frame | Sound | Switch it off? | With sound | Without |
|---|---|---|---|---|
| Veo 3.1 | on by default | yes | 448 (8 s) | 224 |
| Veo 3.1 Fast | on by default | yes | 168 (8 s) | 112 |
| Veo 3.1 Lite | on by default | yes | 54 (8 s), 27 (4 s) | 33 (8 s), 17 (4 s) |
| Kling v3 Standard | on by default | yes | 86 (5 s) | 57 |
| Kling v3 Pro | on by default | yes | 114 (5 s) | 76 |
| Kling 2.6 Pro | on by default | yes | 95 (5 s) | 47 |
| Kling O3 | off by default | yes | 76 (5 s) | 57 |
| Seedance 2.5 | on by default | yes | 157 (5 s, 720p) | same price |
| Wan 3.0 Prime | on by default | yes | 46 / 95 / 189 (5 s, 480p / 720p / 1080p) | same price |
| Grok Imagine | always | no | 34 (480p) / 48 (720p), 5 s | not available |
| Gemini Omni Flash | always | no | 85 (5 s), 135 (8 s) | not available |
| Creatify Boreal | always | no | 7 / 21 / 81 (5 s, 720p / 1080p / 2K) | not available |
| Pruna p-video | always (provider default) | no | 14 / 27 (5 s, 720p / 1080p) | not available |
| Pruna p-video 2 Pro | always | no | 14 / 24 speed, 27 / 51 quality (5 s, 480p / 768p) | not available |
| Pruna p-video Draft | provider default is on; not confirmed on draft | no | 4 / 7 (5 s, 720p / 1080p) | |
| Hailuo H3, Happy Horse | audio track in every file we checked, no setting | no | ||
| Wan 3.0, Wan 2.5, Wan 2.2, Runway Gen-4 Turbo | no generated-audio setting |
Seedance also switches its own audio off when you attach a reference audio track, so your soundtrack is not layered with a generated one. Happy Horse's video edit can keep the original clip's sound, and Hailuo H3's lip-sync mode, Pruna Avatar and OmniHuman take your audio track as input; none of them generates sound of its own on 8frame. Pruna p-video and Creatify Boreal can also take a driving audio track, and generate their own sound when you do not give them one (on p-video, the track's length, up to 20 seconds, sets the clip's; see how to use Pruna p-video); see how to use Creatify Boreal. Their prices are in AI lip sync price by model.
What this means in practice
Drafting on Veo or Kling? Switch the sound off. You pay for audio on every rejected attempt. On Veo 3.1 Lite a silent 8-second draft is 33 credits against 54 with sound; rerun only the winner with audio.
On Seedance and Wan 3.0 Prime, keep it on. The price is the same, so there is nothing to save by turning it off, unless you know the track will be replaced.
On Grok Imagine, Gemini Omni Flash, Creatify Boreal and Pruna, you pay for sound regardless. Pick them when you want sound; if the audio will be muted, a model that charges less for silence is the better draft.
For a clean mix, generate silent and score it. Generated audio arrives as one baked track. If music has to sit under a voiceover, generate silent where you can and build the track separately: on 8frame, ElevenLabs text to speech is 13 credits per started 1,000 characters and a 30-second Lyria 2 music piece is 13.
Cheapest routes to a clip with sound
| Route | Clip | Credits |
|---|---|---|
| Creatify Boreal | 5 s, 720p | 7 |
| Pruna p-video | 5 s, 720p | 14 |
| Pruna p-video 2 Pro, speed | 5 s, 480p | 14 |
| Creatify Boreal | 5 s, 1080p | 21 |
| Veo 3.1 Lite | 4 s, 720p | 27 |
| Grok Imagine | 5 s, 480p | 34 |
| Wan 3.0 Prime | 5 s, 480p | 46 |
| Veo 3.1 Lite | 8 s, 720p | 54 |
| Seedance 2.5 | 5 s, 480p | 70 |
| Kling v3 Standard | 5 s | 86 |
Resolution per model is in AI video resolution by model, and clip lengths in clip length limits by model. If a clip came back silent, why does my AI video have no sound walks through the four causes.
FAQ
Which AI video models generate sound? On 8frame: Veo 3.1, Kling v3, 2.6 Pro and O3 (O3 when you switch it on), Seedance 2.5 and 2.0, Wan 3.0 Prime, Grok Imagine, Gemini Omni Flash, Creatify Boreal, and Pruna p-video and p-video 2 Pro. Hailuo H3 and Happy Horse have no sound setting, but every file of theirs we checked comes with an audio track; listen to it before you plan around it.
Can I turn off audio on AI video to save credits? On Veo 3.1 and Kling, yes: it saves between a third and a half, depending on the model. On Seedance and Wan 3.0 Prime the price does not change. Grok Imagine, Gemini Omni Flash, Creatify Boreal and Pruna's p-video models cannot be made silent on 8frame.
What is the cheapest AI video with sound? The cheapest we can confirm per second is Creatify Boreal at 720p: 7 credits for 5 seconds on 8frame. Pruna p-video Draft is cheaper per second, but we have not confirmed that its draft output keeps sound. Among established models, Grok Imagine at 480p (34 for 5 seconds) and Veo 3.1 Lite (27 for 4 seconds) both cost 6.75 credits a second.
Does Seedance generate audio? Yes, by default, at no extra cost. It turns its own audio off when you attach a reference audio track.
Sources
- Audio settings and prices per model: the 8frame app, checked 2026-09-30
- Pruna sound: the provider's input schema (
save_audioon by default, which 8frame does not change) and its public example outputs for p-video and p-video 2 Pro, which carry an audio track, checked 2026-09-30 - Audio track in output files: 8frame production media metadata, completed generations of the last 120 days, read 2026-10-02; MiniMax H3 model card, checked 2026-10-02
Pay for sound only on the take you keep. The 8frame canvas is free and unlimited; generation is paid from $19/month.