# Seedance 1.5 Pro > Seedance 1.5 Pro is ByteDance's joint audio-video model, published in December 2025, that makes 4–12 second clips with lip-synced speech, sound effects and ambience from text or a start image. On Kenerate AI it costs 7.2, 15.6 or 31.2 credits a second at 480p, 720p or 1080p with sound, and half that with sound off — so a 5-second clip is 36, 78 or 156 credits. A cheaper Seedance 1.5 Fast runs at 720p and 1080p for 12 or 18 credits a second. URL: https://kenerateai.com/models/bytedance/seedance-1-5-pro Publisher: Kenerate AI (https://kenerateai.com) Last updated: 18 October 2026 ## Key facts - Official name: Seedance 1.5 pro - Model ID: bytedance/seedance-v1.5-pro - Maker: ByteDance Seed - Released: December 2025 - Clip length: 4–12 s - Resolution on Kenerate: 480p · 720p · 1080p - Aspect ratios: 16:9 · 9:16 · 1:1 · 4:3 · 3:4 · 21:9 - Inputs: Text · start image - Sound: Native, toggle — off is half price - Billing: Per second, no subscription ## Steps 1. Open the video studio — Go to /app/video and pick Seedance 1.5 Pro (the button on this page selects it), or Seedance 1.5 Fast. Video needs any one-time credit pack. 2. Add a start image (optional) — Upload a still to animate it, or leave it empty for text to video. With an image, a motion prompt is required. 3. Describe the shot and the sound — Write subject, action, camera move and mood. Put spoken lines in quotes, say who speaks and in which language. 4. Pick length, resolution and ratio — Choose 4–12 seconds, 480p to 1080p and one of six aspect ratios; switch sound or the fixed camera on or off. The credit cost shows before you generate. ## In depth ### What a Seedance 1.5 Pro clip costs Kenerate bills Seedance 1.5 Pro per second of output and rounds each clip up to whole credits. Sound off halves every price below. - 480p — 36 credits for 5 s, 72 for 10 s, 87 for 12 s. Drafts and testing prompts. - 720p — 78 credits for 5 s, 156 for 10 s, 188 for 12 s. Social clips and most finished work. - 1080p — 156 credits for 5 s, 312 for 10 s, 375 for 12 s. Final renders; Seedance 1.5 Fast does 5 s at 1080p for 90. ### Prompting Seedance 1.5 Pro for dialogue Seedance 1.5 Pro was built for joint audio-video generation with lip-sync across languages and dialects [1][2]. Name who speaks, put the line in quotes and say the language — "the chef turns to camera and says in Spanish: 'Listo, a comer'". Add the ambience you want (kitchen clatter, rain, crowd) and keep one main action per clip. For a fixed product shot, switch on the fixed-camera toggle and describe only the subject's motion. ### Where Seedance 1.5 Pro fits in the Seedance family Seedance 1 Pro makes silent video; 1.5 Pro added native sound and dialogue [1]; Seedance 2.0 added multi-reference input and longer clips; Seedance 2.5 goes up to 30 seconds. On Kenerate all of them run on one credit balance with one-time packs, so you can draft on 1.5 Pro and move a shot to 2.0 when you need references. Don't use real people's likenesses or copyrighted characters without permission. References: [1] Seedance 1.5 pro: A Native Audio-Visual Joint Generation Foundation Model — ByteDance Seed: https://seed.bytedance.com/en/public_papers/seedance-1-5-pro-a-native-audio-visual-joint-generation-foundation-model [2] Seedance 1.5 pro — ByteDance Seed: https://seed.bytedance.com/en/seedance1_5_pro [3] Seedance v1.5 Pro — Vercel AI Gateway: https://vercel.com/ai-gateway/models/seedance-v1.5-pro ## FAQ Q: What is Seedance 1.5 Pro? A: Seedance 1.5 Pro is ByteDance's audio-video model from its Seed team, described in a technical report dated 15 December 2025. It generates video and sound together — speech with lip-sync, effects and ambience — from a text prompt or a start image, in 4–12 second clips. Q: How much does Seedance 1.5 Pro cost on Kenerate? A: It's billed per second. With sound it costs 7.2, 15.6 or 31.2 credits a second at 480p, 720p or 1080p, rounded up per clip; with sound off it's half. A 5-second clip with sound is 36, 78 or 156 credits; a 10-second 720p clip is 156. Credits come in one-time packs from $15 for 1,300. Q: Is Seedance 1.5 Pro free? A: Not on Kenerate's free plan — video needs any one-time credit pack, with no subscription. The cheapest Seedance 1.5 Pro clip is 4 seconds at 480p with sound off, for 15 credits. Q: Seedance 1.5 Pro vs Seedance 1.5 Fast — which should I use? A: Both take text or a start image, make 4–12 second clips and can generate sound. Fast only offers 720p and 1080p and costs 12 or 18 credits a second with sound, versus 15.6 or 31.2 on Pro. Use Fast for quick 1080p takes, Pro when you want 480p drafts or the full model's quality. Q: Does Seedance 1.5 Pro make sound? A: Yes. Picture and audio come from the same model, so speech is lip-synced to the characters. ByteDance highlights multilingual and dialect lip-sync; Vercel's listing names Chinese, English, Japanese, Korean, Spanish and Indonesian plus Sichuanese and Cantonese. On Kenerate, switching sound off halves the price. Q: How long can Seedance 1.5 Pro videos be? A: 4 to 12 seconds per clip, in whole seconds. To go longer, extend a clip with new seconds in the studio, or use Seedance 2.0 (up to 15 s) or Seedance 2.5 (up to 30 s). Q: What resolution does Seedance 1.5 Pro output? A: 480p, 720p or 1080p on Kenerate, in 16:9, 9:16, 1:1, 4:3, 3:4 or 21:9. Vercel lists the model at 24 frames per second. Q: Seedance 1.5 Pro vs Seedance 2.0 — what changed? A: Seedance 2.0 (February 2026) adds multi-reference input — up to 9 images, 3 clips and 3 audio files — clips up to 15 seconds and output up to 4K on Kenerate. It costs 72 credits a second at 720p, against 15.6 for Seedance 1.5 Pro. For single-shot clips with dialogue on a budget, 1.5 Pro is the cheaper choice. Q: What is bytedance/seedance-v1.5-pro? A: It's the model ID API platforms use for Seedance 1.5 Pro. On Kenerate you don't need an API key — the same model runs in the browser as kenerate/seedance-v1.5-pro. ## Related pages - Seedance 2.0: https://kenerateai.com/models/bytedance/seedance-2-0 - Seedance 2.5 & 2.0: https://kenerateai.com/seedance-2-5 - Kling 3.0: https://kenerateai.com/models/kwaivgi/kling-v3-0 - Image to video AI: https://kenerateai.com/image-to-video-ai - All AI video models: https://kenerateai.com/ai-video-models ## Sources - Seedance 1.5 pro: A Native Audio-Visual Joint Generation Foundation Model — ByteDance Seed: https://seed.bytedance.com/en/public_papers/seedance-1-5-pro-a-native-audio-visual-joint-generation-foundation-model - Seedance 1.5 pro — ByteDance Seed: https://seed.bytedance.com/en/seedance1_5_pro - Seedance v1.5 Pro — Vercel AI Gateway: https://vercel.com/ai-gateway/models/seedance-v1.5-pro