seedance-2-5 Edit or extend source video with Seedance 2.5, or create 4–30 second clips up to 1080p from text and multimodal references with native audio.
No GPU. No setup. Cancel anytime.
This is the workflow behind the featured storyboard video in Sogni Chat: GPT Image 2.5 plans every shot, then Seedance 2.5 shoots the whole film in one pass.
One photoreal identity plate of the pink Sogni sloth, rendered at 2560 × 1440 by GPT Image 2.5 from the original mascot art. Every later step references this face, fur, glasses and horn, so the character never drifts.
GPT Image 2.5 lays out twelve numbered shots per 3840 × 2160 sheet, each with a timecode, medium and line of dialogue, using the plate as a reference so the same sloth appears in all 36 stills. Each sheet took about a minute and roughly 32 Spark.
Seedance 2.5 takes the three sheets, the plate and the logo as @Image1 to @Image5 and renders a single 30-second 1920 × 1080 clip with the speech, sound effects and music generated together. About 8.5 minutes of render time.
Times are render time on the Sogni Supernet on 2026-09-16 and exclude queue time. The finished film is below, with all three sheets at full resolution.
Three GPT Image 2.5 storyboard sheets, one identity plate and one prompt became this 30-second Seedance 2.5 film at 1920 × 1080, with the dialogue, sound effects and 120 bpm score generated in the same pass. Play it with sound and watch the fur, glass and paint hold up as the sloth changes medium every three-quarters of a second.
Rendered in one pass from the three sheets below plus the identity plate and the Sogni logo. Watch for individual fur strands in the office, ridged oil paint on the wave, lantern paper on the dragon and the wet catchlights that survive every change of medium.
The office set-up and the turn: eight brisk deadpan shots, the “Psych.” reveal, then the first wave of awe.
Calm and cheeky glamour: marble, sumi-e ink, stained glass, watercolour, ukiyo-e, a black-and-white perfume ad, a 1950s beach poster and film noir.
Comedy, then polish: claymation, a puppet cooking show, a Renaissance fresco, telenovela, a K-pop stage, product macro, concept car, and the return to the studio for the brand line.
The sheets are references, not starting frames. The prompt tells Seedance 2.5 that @Image1 to @Image3 are one ordered 36-shot storyboard read left to right, then top to bottom; that @Image4 is the identity plate every shot must match; and that @Image5 is the logo for the end card. Seedance reads each cell as a composition, camera move and medium to shoot, so nothing on screen looks like a grid and no shot number or caption leaks into the picture.
Dialogue is timed in the prompt. Every spoken line carries a start and end timecode and a delivery note, and every transition after 00:07 is asked to land on a beat of a 120 bpm track. Seedance 2.5 generates the voice, the sound effects and the music together with the picture, so the “Psych.” vinyl stop and the beat drop arrive where the storyboard says they should.
Do it yourself. Describe the film in Sogni Chat and choose the featured storyboard workflow: GPT Image 2.5 draws the sheets, you approve them, and Seedance 2.5 renders the clip at up to 1080p. The GPT Image 2.5 page covers the sheet side; the verbatim video prompt is on the right.
The film above is the shipped cut: a “Psych.” title card and the exact Sogni end card were composited in post over the Seedance render. Everything else, including all speech, effects and music, is straight from the model.
Create one finished 30-second 16:9 cinematic Sogni commercial with native synchronized speech, sound effects and music. @Image1 is sheet 1 of 3 (shots 01–12), @Image2 is sheet 2 of 3 (shots 13–24), @Image3 is sheet 3 of 3 (shots 25–36); together the sheets are one ordered 36-shot production storyboard, each read left to right then top to bottom, defining the shot order, composition, camera move, colour and medium of every shot. @Image4 is the PHOTOREAL IDENTITY PLATE of the one and only lead character: a real live-action pink-furred sloth with a striped unicorn horn, black rectangular glasses, amber eyes, pale blue muzzle and warm face markings. Every shot, in every medium, shows this exact character with this face; he is never replaced by a human, another animal or a generic character, and when a medium changes his silhouette, glasses, horn and face markings persist. @Image5 is the authoritative original Sogni logo for the final end card. The storyboards give compositions and sequence, not literal starting frames: every shot fills the screen with cinematic motion. Never display a storyboard grid, frame borders, shot numbers, timecodes, caption bands, subtitles, signs or production notes; no readable lettering anywhere except the end card; never pan across a sheet. No unrelated brand or partnership logos. The narrative is an affectionate, mischievous joke about escaping corporate drudgery to make wild art, told as a relentless flowing commercial. Shots 1 to 8 are a brisk deadpan office set-up (about seven seconds) with the camera always moving. Shots 9 to 32 are a montage in which the same sloth is re-imagined in a new medium or genre about every three-quarters of a second, moving through waves of awe, calm, cheeky glamour, comedy and slick polish; shots 33 to 36 return to live action and resolve on the brand. Photographic realism throughout: real fur with individual strands, real glass, wet catchlights, believable hands and weight, and each named medium rendered as a physically real material (ridged oil paint, clay with fingerprints, leaded glass, paper grain) rather than a flat filter. The picture never hard cuts inside the montage: every shot hands off to the next through the motivated transition named for it (a wipe by an object crossing the lens, a push through a reflection or a pane, a whip pan, a bloom or flare that whites out and resolves, a morph in which one element becomes the next scene's element) while the camera keeps moving and the sloth keeps moving inside the frame. The music is a 120 bpm track and from 00:07 onward each transition lands on a beat. The sloth is one consistent speaker with a warm, slightly raspy adult male voice: a brisk, upbeat, fast-talking advertising read with no dead air, dry corporate sincerity in the office and delighted confidence after the punchline, reacting to his own creations with short exclamations. All spoken words below are exact and are the only words spoken; pronounce the brand name exactly "SOG-nee". Clear speech in the foreground; duck the music under every line; synchronized mouth movement whenever his mouth is visible, narration otherwise. Do not add, repeat, paraphrase or truncate dialogue. Dialogue timing and delivery: 00:00–00:04.3 "Ever since I was young, I've always wanted to convert unstructured data into actionable insight." (brisk, upbeat, corporate-sincere, no pauses); 00:04.8–00:05.3 "Psych." (dry, then a grin); 00:06.2–00:07.3 "I've wanted to make wild art." (delighted, fast); 00:07.5–00:08.0 "Oooh." (awed); 00:11.5–00:12.0 "Ahhh." (soothed); 00:15.3–00:15.8 "Hel-lo." (cheeky, flirty); 00:19.0–00:19.4 "Ha!" (a bark of a laugh); 00:22.8–00:23.3 "Slick." (cool, admiring); 00:24.3–00:25.2 "Anything. Everything." (rapid, building); 00:25.6–00:27.0 "And it's finally here." (warm, inviting); 00:28.0–00:29.6 "Sog-nee. Create anything." (confident brand read; pronounce the brand exactly SOG-nee). 00:00–00:01.2 THE DREAM JOB: Fast dolly rushing down the cubicle aisle toward the sloth at his beige CRT, paper towers blurring past; the move never stops. Fluorescent hum, dull corporate piano. 00:01.2–00:02.2 THE DESK: Whip pan lands on the desk: the receipt spools into the foreground, he types with two fingers and glances into the lens. 00:02.2–00:03.0 THE STAMP: The camera rides the stamp down onto the report stack; the cup jumps on impact. Stamp thud. 00:03.0–00:04.0 THE SPREADSHEET: Push in until one lens fills the frame, spreadsheet cells scrolling across the reflection over his amber eye. Monitor whine. 00:04.0–00:04.8 THE SILENCE: Pull back to the dead-on medium shot, stamp frozen mid-air, deadpan to camera. The printer coughs once and the music stops dead. 00:04.8–00:05.6 PSYCH: Snap punch-in: glasses lowered, eyebrow up, grin, a hot-pink spark on the horn, a vinyl stop and a breath of silence. 00:05.6–00:06.2 THE CRACK: The spark cracks the whole office like glass: tubes flicker, walls split into cyan and magenta light, every sheet of paper lifts at once as he rises. Rising rumble. 00:06.2–00:07.0 THE RIP: Beat drop: he springs up and sweeps the stylus, walls tear into liquid paint, paperwork folds into origami birds, the tie becomes a paint ribbon over a charcoal apron, and the ribbon sweeps across the lens as a wipe. Bass hit, paint splash. 00:07.0–00:07.75 OIL WAVE (thick impasto oil paint, photographed): The wipe reveals a low tracking shot of him carving a giant paintbrush across an impasto oil wave; the crest curls over the lens. 00:07.75–00:08.5 COSMIC: The curl becomes a spiral galaxy; he drops onto a floating rock and conducts the stars under a ringed planet, aurora streaming. 00:08.5–00:09.25 KAIJU: The planet becomes the sunset behind a 300-foot sloth striding between skyscrapers, helicopters circling, painting the sky; the camera rises and dives into the reflection in his glasses. 00:09.25–00:10.0 DEEP SEA: Inside the reflection a glowing bathysphere descends with him at the porthole among giant jellyfish; a whale glides across the lens as a wipe. 00:10.0–00:10.75 LANTERN DRAGON: The whale's flank becomes a paper-lantern dragon he rides through fireworks over a night harbour, camera chasing; a bloom whites out the frame. 00:10.75–00:11.5 MARBLE (carved white marble, photographed): The bloom resolves as a museum skylight over his marble statue; cracks spread, pink light spills out as he stirs, and the cracks race to the lens and shatter. 00:11.5–00:12.25 INK WASH (sumi-e ink on rice paper): The shards land as ink drops on rice paper; strokes form him walking a misty mountain path; the ink blooms across the frame. 00:12.25–00:13.0 STAINED GLASS (leaded stained glass, photographed): The bloom becomes sunlight through a stained-glass window of him; the camera dollies in through the beams and pushes through a pane. 00:13.0–00:13.75 BLOSSOM LAKE: Through the pane: slow-motion petals over a mirror lake at dawn, him meditating on a dock as the camera orbits; a petal lands and the ripple wipes the frame. 00:13.75–00:14.5 WATERCOLOR (wet watercolor on paper): The ripple bleeds into wet watercolor: he strides through a lavender field as the pigments run; the paper tears from a corner. 00:14.5–00:15.25 WOODBLOCK (edo-period ukiyo-e woodblock print): Behind the tear, an ukiyo-e print: he surfs the crest of a great wave; the foam curls over the lens. 00:15.25–00:16.0 PERFUME AD (black-and-white fashion film): The foam becomes his wind-blown fur in a black-and-white perfume ad; he is the model, slow motion, eyebrow raised at the lens; a flare whites out the frame. 00:16.0–00:16.75 BEACH AD PARODY (1950s painted beach poster): From white, a 1950s painted beach poster: the sloth glances back in surprise as a small black puppy tugs his blue swim trunks down to show a paler fur tan line; the puppy bounds toward the lens. 00:16.75–00:17.5 BEACH RUN: The leap becomes slow-motion surf: he jogs out of the waves in red trunks with a rescue float, smirking; spray hits the lens. 00:17.5–00:18.25 ROMANCE COVER (painted paperback romance cover): The spray becomes painted foam on a romance-novel cover: windswept hero on a sea cliff, shirt torn open, mane streaming; the wind whips it into rain. 00:18.25–00:19.0 NOIR (film noir): The rain streaks a noir window; blind shadows sweep across him in a fedora sipping espresso, red neon, a sultry look; the blinds close across the frame. 00:19.0–00:19.75 CLAYMATION (stop-motion plasticine, photographed): The blinds open on a tabletop where a clay version of him sculpts a city that pops up building by building, camera craning up; a tower rises into the lens. 00:19.75–00:20.5 PUPPET COOKING SHOW (felt hand puppet): The tower becomes a wobbling cake on a chaotic cooking show; the felt-puppet sloth flails as flour explodes toward the lens. 00:20.5–00:21.25 FRESCO (renaissance ceiling fresco): The flour settles as plaster dust on a ceiling fresco: he reaches a fingertip toward a robot's fingertip, cherubs peeking, camera tilting up; the fingertips touch and spark. 00:21.25–00:22.0 TELENOVELA: The spark becomes lightning behind velvet curtains: crash-zoom on him gasping with a hand to his chest, a shocked butler behind. 00:22.0–00:22.75 K-POP STAGE: The lightning becomes stage strobes: a sharp dance move with four backup-dancer sloths on a neon stage; confetti cannons fire at the lens. 00:22.75–00:23.5 PRODUCT MACRO: The confetti settles into a matte-black product studio: macro of the stylus rotating, a light sweep travelling its edge, his eye in the reflection; the sweep wipes the frame. 00:23.5–00:24.25 PAINT DUNK: The sweep becomes arena lights: slow-motion dunk of a liquid-paint basketball, camera under the rim, droplets frozen; the splash hits the lens. 00:24.25–00:25.0 CONCEPT CAR: The streaks become a tunnel of light: he drives a sleek concept car as the camera pulls ahead; the car drives into the lens flare. 00:25.0–00:27.3 THE STUDIO: The flare clears on a continuous pullback in a warm artist studio as he steps toward the lens with the stylus, his creations from every medium arranged around him. The music resolves. 00:27.3–00:28.0 THE FLICK: Close: he flicks the stylus at the lens with a grin and a splash of coral, cyan and violet pigment bursts toward the camera. 00:28.0–00:28.6 THE SPLASH SETTLES: The splash fills the frame and settles, slowing and darkening toward near-black with a soft cyan and pink glow. 00:28.6–00:30 SOGNI: The glow resolves into a near-black end card with the exact Sogni logo, one line "Create anything." and a small footer "GPT Image 2.5 + Seedance 2.5 • sogni.ai", held steady to the end. Music: a dull corporate piano under the office that stops dead at 00:04.0, a vinyl stop on "Psych.", a rumble on the crack, then an energetic 120 bpm beat drop at 00:06.2 that lands a hit on every transition through the montage, resolving into a warm brand chord over the studio and end card. Finish the last spoken word by 00:29.6 and leave a short clean sonic resolve. No fade to an empty screen before the end. The end card carries only the logo, the single line and the small footer named above.Use prompt →
Rendered on 2026-09-16 with Seedance 2.5 at 1920 × 1080, 30 seconds, 24 fps, seed 685373305, from five reference images and no reference video or audio. Render time excludes queue time. The list quote was 4,435 Spark ($22.18); the account's Unlimited Pro discount brought the billed cost to 3,992 Spark ($19.96).
Seedance 2.5 is ByteDance's mainline video generation model, served through BytePlus ModelArk. It renders 4 to 30 second clips at a fixed 24 fps and generates native audio in the same pass.
Its Reference to Video workspace now exposes three explicit modes. Create makes a new clip from loose references. Edit transforms @Video1 while preserving everything you do not ask to change; the output follows the source video's duration and aspect. Extend continues @Video1 after its ending; the aspect follows the source while you choose a new 4 to 30 second continuation.
Seedance 2.5 accepts up to 30 reference images, 10 reference videos, and 10 reference audio clips — 50 media parts total. Edit and Extend require a source video as @Video1, and you can still use the wider reference stack to guide identity, environment, motion, or sound.
Seedance 2.5 is the latest Seedance generation and the recommended default for current storyboard workflows. It doubles the maximum clip length, widens reference input, and renders up to 1080p. Seedance 2.0 remains available when a 4K master is required.
Choose the reference mode first, then make @Video1's role explicit in the prompt.
In Edit and Extend, the first attached video is the source or continuation anchor. Edit inherits its duration and aspect; Extend inherits its aspect and uses the continuation duration you select.
The mode is fixed before generation so the same reference video cannot be ambiguously interpreted after billing.
| Mode | Required input | Output behavior |
|---|---|---|
| Create | At least one loose image, video, or audio reference | A new 4–30 second clip guided by the attached media |
| Edit | @Video1 as the source; optional supplemental references | Transforms the source; duration and aspect follow @Video1 |
| Extend | @Video1 as the continuation anchor | Continues after the ending; aspect follows @Video1, with a new 4–30 second duration |
Seedance 2.5 is a pay-as-you-go Premium Spark vendor model. Every clip uses purchased Spark, including for Sogni Unlimited members. Unlimited saves 5%; Unlimited Pro saves 10%.
| Configuration | Spark | USD |
|---|---|---|
| 5 s · 480p | 134 Spark | $0.67 |
| 30 s · 480p | 802 Spark | $4.01 |
| 5 s · 720p | 300 Spark | $1.50 |
| 10 s · 720p | 601 Spark | $3.00 |
| 5 s · 1080p | 739 Spark | $3.70 |
| 30 s · 720p | 1803 Spark | $9.01 |
| 30 s · 1080p | 4435 Spark | $22.18 |
Per-second Premium Spark rates: $0.739206 per second at 1080p, $0.300456 per second at 720p, and $0.133640 per second at 480p. Totals are billed from those exact rates.
Jobs that supply a reference video — video editing and video extension — use a lower vendor rate, so they cost less per second than text-to-video.
One Sogni API key reaches every model in the catalog — call Seedance 2.5 with the exact model id.
import { SogniClient } from '@sogni-ai/sogni-client';
const client = await SogniClient.createInstance({
appId: crypto.randomUUID(),
apiKey: process.env.SOGNI_API_KEY,
network: 'fast',
});
const project = await client.projects.create({
type: 'video',
modelId: 'seedance-2-5',
positivePrompt: 'a slothicorn surfing a wave of liquid paint, slow push-in, cinematic',
numberOfMedia: 1,
duration: 5,
});
const [url] = await project.waitForCompletion();
console.log(url); // result link — download within 24h curl https://api.sogni.ai/v1/creative-agent/workflows \
-H "Content-Type: application/json" \
-H "Authorization: Bearer $SOGNI_API_KEY" \
-d '{
"input": {
"title": "First render",
"steps": [{
"id": "step1",
"toolName": "generate_video",
"arguments": { "prompt": "a slothicorn surfing a wave of liquid paint, slow push-in, cinematic", "videoModel": "seedance2-5", "duration": 5 }
}]
},
"confirm_cost": true
}' REST workflow alias: seedance2-5. Pin the exact id with the SDK. Full reference at docs.sogni.ai.
One 15-second motion-driven mascot edit became the control for a second 30-second edit: first the pink Sogni sloth replaces the source dancer, then the same mascot performs the choreography as a green-screen partner beside a live-action creator. Play both with sound and compare identity, plush body volume, motion fidelity, and beat synchronization.
Seedance 2.5 is a third-party frontier model. It uses purchased Spark for every clip; Unlimited plans discount those pay-as-you-go rates instead of covering them as fair-use renders.
Vendor-backed renders are billed with Spark even when your account has an active Unlimited subscription.
Unlimited saves 5%; Unlimited Pro saves 10%.
Launch Seedance 2.5 from the Sogni app or call the exact model id through the API.
Use premium vendor models alongside Sogni Supernet image, video, music, and language models.
Choose Seedance 2.5 for the latest generation, 4 to 30 second clips, up to 30 images, 10 videos, and 10 audio references, and output up to 1080p. Choose Seedance 2.0 when the job specifically requires 4K.
Text on its own; a first frame, or a first-and-last-frame pair, for image-to-video; and up to 30 loose images, 10 videos, and 10 audio clips for Create, Edit, and Extend reference modes, with 50 media parts total. Audio-only reference creation is supported.
Both require a source video as @Video1 and inherit its aspect ratio. Edit transforms the existing timeline and automatically follows @Video1's duration, up to 30 seconds. Extend starts after @Video1 ends and uses a new continuation duration you choose from 4 to 30 seconds.
Set seedanceTaskType to reference, edit, or extend on a seedance-2-5 video project. Edit and Extend require at least one reference video; the first attached video is @Video1. Omit seedanceTaskType for first-frame and first-plus-last-frame generation.
Yes. Seedance 2.5 generates native audio as part of the same pass, at a fixed 24 fps.
Seedance 2.5 renders 1080p as well as 480p and 720p. It does not render 4K; use Seedance 2.0 when 4K is required.
Not currently. Seedance 2.5 is not an open-weight model, so Sogni cannot run it directly on Supernet worker GPUs. We provide it through the third-party BytePlus ModelArk API, which charges Sogni per render, so Seedance 2.5 must remain pay-as-you-go. Unlimited members save 5% and Unlimited Pro members save 10% on those rates. ByteDance has not provided a forecast for whether or when Seedance 2.5 will become open weight; if it becomes available to run on Sogni worker nodes, we will add it to Unlimited. Until then, MiniMax H3 and Wan 2.2 are excellent open-weight video alternatives included with Unlimited.
Seedance 2.5 is pay-as-you-go Premium Spark. It is not covered as an Unlimited fair-use render; every clip uses purchased Spark. Unlimited saves 5%; Unlimited Pro saves 10%. Prices start at 134 Spark ($0.67) per clip.
Create in the app, or build with the API. Your call.