ByteDance · Announced June 23, 2026
Dreamina Seedance 2.5
One take. Thirty seconds. Sound included.
Dreamina Seedance 2.5 is a new video generation model from ByteDance, available now on the Atlas Cloud API. One native pass of up to 30 seconds with scene changes and tempo shifts, up to 50 multimodal references, and audio generated together with the picture — pay per second, no waitlist.
Dreamina Seedance 2.5 is developed by ByteDance. Atlas Cloud (operated by Atlas Cloud AI LLC) provides access to it and does not own it. All trademarks belong to their respective owners.
Available Now
Three endpoints, one model, one API key
Every Dreamina Seedance 2.5 variant shares the same generation core, prompt understanding, and audio pipeline. Pick the input you already have — a prompt, a frame, or a reference set — and call it with the same key.
Billed per second of generated video, usage-based, with no minimum commitment. The live rate for the options you pick is shown on each model page before you run anything.
Need native 4K output today, or a lower rate per second? Native 4K is planned for Dreamina Seedance 2.5; until it lands, Dreamina Seedance 2.0 renders up to native 4K, and Seedance 2.0 Fast and Mini run at lower per-second rates.
Compare the Seedance familyThe Headline Feature
Thirty seconds without a single cut
Longer stories are usually pieced together from short clips in post. Dreamina Seedance 2.5 generates the full 30-second arc in one native pass — camera moves, scene changes, and tempo shifts included — while character appearance, lighting, and motion style hold from first frame to last.
Establish
The opening shot sets scene, light, and mood from your prompt and references.
Scene change
The model transitions locations mid-take while characters and grade stay locked.
Tempo shift
Pacing accelerates or breathes — motion and score shift together, in sync.
Payoff
The take resolves as one continuous shot. No seams to hide, nothing to stitch.
What's New in 2.5
Built like a production pipeline, not a clip generator
What Dreamina Seedance 2.5 adds over the 2.0 family, exactly as it runs on the Atlas Cloud API.
50 multimodal references
Attach up to 30 images, 10 videos, and 10 audio tracks to a single request — 30 seconds of combined audio and video reference — and lock characters, products, locations, and style across the whole take. Dreamina Seedance 2.0 accepts 9 images and 3 clips each.
Audio-only referencing
New in 2.5: a single BGM, voice, or sound-effect track can be the only reference you supply. The model reads it for pacing, beat matching, and lip sync — no image or video input required.
Sound and picture, generated together
Audio is produced with the visuals rather than layered on after. Dialogue lands on lips, foley lands on frames, and the score follows the cut across the full 30 seconds.
Editing and extension
Change one local element of an existing clip — a product, a costume, the weather — while the rest of the frame stays intact, or extend footage you already have. Both run through the reference-to-video endpoint.
Speech in 10+ languages
Native speech generation across more than ten languages, with stronger instruction following for dialogue and delivery — enough for localized cuts from a single pipeline.
Pipeline-ready controls
Duration from 4 to 30 seconds or auto, 480p and 720p output, six aspect ratios plus adaptive, MP4 or MOV containers, and toggles for audio, watermark, and last-frame return.
Integrate It Today
Two calls from prompt to video
Submit a generation, poll the prediction, read the output URL. Every Atlas Cloud video model takes the same request shape, so moving from Dreamina Seedance 2.0 to 2.5 is a one-line change.
# 1. Submit the generation
curl -X POST "https://api.atlascloud.ai/api/v1/model/generateVideo" \
-H "Authorization: Bearer $ATLASCLOUD_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "bytedance/seedance-2.5/text-to-video",
"prompt": "A golden retriever running on a sunny beach, cinematic lighting",
"duration": 10,
"resolution": "720p",
"ratio": "16:9",
"generate_audio": true
}'
# 2. Poll until it finishes — outputs[0] is the video URL
curl "https://api.atlascloud.ai/api/v1/model/prediction/PREDICTION_ID" \
-H "Authorization: Bearer $ATLASCLOUD_API_KEY"Swap the model id for bytedance/seedance-2.5/image-to-video or /reference-to-video to use the other endpoints — the rest of the call is identical.
2.0 → 2.5
The spec sheet, side by side
Dreamina Seedance 2.5 against Dreamina Seedance 2.0, as both run on Atlas Cloud today.
Dreamina Seedance 2.5 is newer, not a straight replacement: it doubles clip length and the combined reference budget and more than triples reference capacity, while its output opens at 480p and 720p with native 4K to follow — so 4K work belongs on Dreamina Seedance 2.0 for now.
Sources: Atlas Cloud model API · ByteDance announcement
Why Atlas Cloud
One platform for 2.5 and the rest of your stack
Atlas Cloud is an authorized U.S. reseller of Dreamina Seedance 2.5 and Seedream 5.0 Pro. Run Dreamina Seedance 2.5 with the same API key, request format, and invoice as every other model on the platform.
LLMs, image, video, audio, and 3D — a single key and a single invoice.
No subscription required. Usage is billed per second of generated video, and the cost is shown before each run.
Switch by changing a base URL — no SDK overhaul to adopt a new model.
Create an account, generate an API key, and call any of the three endpoints right away.
Running Dreamina Seedance 2.5 at scale?
Dreamina Seedance 2.5 is self-serve — create an account, add a key, and start generating. If you are planning sustained volume, need rate-limit headroom for a launch, or are moving a pipeline over from another provider, our solutions team will size it with you.
- 01Volume pricing and committed-throughput quotes
- 02Dedicated capacity and rate-limit headroom for launches
- 03Migration review from Dreamina Seedance 2.0 or another video API
- 04A direct line to a solutions engineer, not a ticket queue
You do not need to talk to anyone to start — Dreamina Seedance 2.5 is available self-serve on the Atlas Cloud API right now. This form is for volume, capacity, and migration conversations.
FAQ
Dreamina Seedance 2.5, answered
Dreamina Seedance 2.5 is a multimodal video generation model from ByteDance, announced on June 23, 2026. It generates up to 30 seconds of video in a single native pass, conditions on up to 50 multimodal reference assets, generates synchronized audio with the picture, supports consistency-preserving editing and extension of existing footage, and produces native speech in more than ten languages.
Your next take is thirty seconds long.
Dreamina Seedance 2.5 is live on Atlas Cloud. One API key, per-second billing, no waitlist.
