Seedance 2.0
Overview
Seedance 2.0 is ByteDance Seed's video creation model, announced on February 12, 2026, built on a unified multimodal audio-video generation architecture. It is the quality-focused option in the Seedance 2.0 family, combining reference-guided creation, editing, and extension with up to 15 seconds per generation and output up to 4K.
The specifications below describe the model provider's capabilities. Features, resolutions, reference-material routes, and limits available through B.AI are subject to the platform's actual support. Use the model ID shown by the platform rather than assuming the display name is an API model ID.
Key Features
- Higher-Resolution Production: Supports 1080p output and 4K output with 10-bit color, extending the delivery options beyond the Fast and Mini variants.
- Multimodal Reference Control: Combines up to nine images, three video clips, and three audio clips to guide subjects, composition, motion, camera movement, and sound.
- Joint Audio-Video Generation: Generates video with audio in the same task, including dialogue, music, or sound effects directed by the prompt and references.
- Video Editing and Extension: Supports prompt-guided changes to existing footage and continuation forward or backward; multiple video references can guide transitions.
- Image Animation and Endpoints: Supports first-frame image-to-video and first-and-last-frame generation for animating an image or connecting specified visual endpoints.
Best Use Cases
- Higher-Resolution Advertising and Brand Video: Generate product and campaign footage at 1080p or 4K when delivery resolution and visual detail matter.
- Social and Product Media: Animate product or scene images into short landscape, square, or portrait videos, with generated audio and reference-guided camera work.
- Storyboards and Narrative Prototypes: Combine character, setting, and motion references to test a short sequence before committing to a production approach.
- Footage Revision and Continuation: Replace subjects or objects, adjust visual content, or generate connecting and continuation shots from existing references.
Generation Specifications
| Capability | Description |
|---|---|
| Input Modalities | Text, images, video, and audio. Audio references require an image or video. |
| Generation Modes | Text-to-video, image-to-video, first-and-last-frame generation, reference-guided generation, editing, and extension. |
| Reference Limits | 9 images, 3 videos, and 3 audio clips; video and audio each have a 15-second total limit. |
| Output Duration | 4–15 seconds or automatic. |
| Output Resolution | 480p / 720p / 1080p (8-bit); 4K (10-bit). |
| Aspect Ratios | 16:9, 4:3, 1:1, 3:4, 9:16, 21:9, or adaptive. |
| Frame Rate | 24 FPS output. |
| Output Format | MP4. |
| Draft Mode | Not supported. |
| Delivery | Asynchronous generation; offline inference not supported. |
Standard Pricing
Price unit: USD / 1M Video Tokens (USD per 1 million video tokens). Choose the rate for the output resolution and whether the request includes video. These are task-scenario rates, not separate input and output prices.
| Output Resolution | Without Video Input (USD / 1M Video Tokens) | With Video Input (USD / 1M Video Tokens) |
|---|---|---|
| 480p / 720p | $7.00 | $4.30 |
| 1080p | $7.70 | $4.70 |
| 4K | $4.00 | $2.40 |
Billing Notes
- Without video input can still include image or audio references. Video tokens are not text tokens, and prices are not per second or per video.
- Reference video contributes to billable usage alongside generated output. Minimum token charges apply to video-input tasks and depend on resolution, aspect ratio, and duration.
- A lower 4K per-token rate does not establish a lower total cost for a video of the same duration; total billable usage must also be considered.
- The model provider bills only successfully generated videos, not failed generation tasks. B.AI task status, usage, and final settlement are subject to the platform display and billing records.
Credits settlement: B.AI converts charges at 1 USD = 1,000,000 Credits and deducts Credits from the account balance.
Prices shown in the documentation are B.AI standard reference prices for base billing purposes. B.AI may provide lower actual usage costs through top-up bonuses and account benefits. Specific prices, bonus Credits, account benefits, and final settlement are subject to the platform display and billing records.
Usage and Limitations
The following limits and result-retention rules describe the model provider's service. B.AI availability and task handling are subject to the platform's actual support.
- Single-request generation is limited to 15 seconds. Reference-based control does not guarantee exact subject identity, motion, or frame continuity; review generated footage before use.
- Individual reference videos and audio clips must be 2–15 seconds long, subject to the separate 15-second aggregate limits for each modality. Per-file limits are under 30 MB for images, up to 200 MB for video, and up to 15 MB for audio; the request body must not exceed 64 MB.
- Direct uploads of reference images or videos containing real human faces are restricted. Portrait workflows require supported provider asset routes, such as trusted model outputs, preset digital characters, or authorized real-person assets.
- Input/output dimension mismatches in first-frame and first-and-last-frame workflows can cause abrupt stretching or compression between frames. Match input dimensions to the intended output or use adaptive aspect ratio.
- 4K output uses H.265/HEVC encoding and requires compatible playback and editing environments. The documented 4K limit is 15 task creations per minute and one concurrent task for both enterprise and individual users.
- Task records are retained for seven days. Result video URLs expire after 24 hours and allow at most 100 downloads, so completed files should be saved promptly.
Asynchronous Generation
Generation is task-based: submit a request, check its status, and retrieve the result after completion. It is not a streamed text reply. Use B.AI's supported video-generation interface; do not substitute a chat endpoint or the provider's endpoint without confirming compatibility.