Bytedance Seedance 2.0 Fast Text To Video
Playground
Try it on WavespeedAI!Seedance 2.0 Fast (Text-to-Video) generates cinematic videos from text prompts with native audio-visual synchronization, director-level camera and lighting control, and exceptional motion stability — optimized for faster generation at lower cost. Built on ByteDance Seed’s unified multimodal architecture.
Features
Seedance 2.0 Fast Text-to-Video
Seedance 2.0 Fast is the speed-optimized version of ByteDance Seed’s latest video generation model. The Text-to-Video mode generates cinematic videos from text prompts with native audio synchronization — faster and at 33% lower cost than the standard version, ideal for rapid iteration and high-volume production.
Key Features
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Speed-optimized generation Faster processing for quick turnaround on video projects, perfect for iteration and prototyping.
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33% lower cost $0.80 per 5 seconds vs $1.20 for the standard version — ideal for high-volume production.
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Unified multimodal architecture Same Seedance 2.0 foundation handling text, image, audio, and video inputs.
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Native audio-visual synchronization Generates video with synchronized audio in a single pass.
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Director-level control Camera movement, lighting, shadows, and character performance controlled through prompts.
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Strong motion stability Coherent motion with stable subjects and fluid transitions.
Parameters
| Parameter | Required | Description |
|---|---|---|
| prompt | Yes | Detailed description of the cinematic scene |
| aspect_ratio | No | Output format: 16:9 (default), 9:16, 4:3, 3:4 |
| duration | No | Video length: 5 (default), 10, or 15 seconds |
How to Use
- Write your prompt — describe the scene with cinematic detail.
- Select aspect ratio — 16:9 for widescreen, 9:16 for vertical, 4:3 or 3:4 for classic formats.
- Set duration — choose 5, 10, or 15 seconds.
- Run — submit and download your video.
Pricing
| Duration | Cost |
|---|---|
| 5 s | $0.80 |
| 10 s | $1.60 |
| 15 s | $2.40 |
Billing Rules
- Rate: $0.80 per 5 seconds
- Duration options: 5, 10, or 15 seconds
Best Use Cases
- Rapid Prototyping — Quickly iterate on concepts before committing to the standard version.
- High-Volume Production — Cost-effective generation for large content libraries.
- Social Media Content — Fast turnaround for short-form video needs.
- A/B Testing — Generate multiple variations efficiently to find the best creative direction.
Pro Tips
- Use Fast for iteration and testing, switch to standard Seedance 2.0 for final quality.
- Write prompts like a film director — include lighting, camera angles, and mood.
- Start with 5s to iterate, then extend once the look is right.
Notes
- Native audio generation included.
- Duration options: 5, 10, or 15 seconds.
- For highest quality output, consider the standard Seedance 2.0.
Related Models
- Seedance 2.0 Text-to-Video — Standard version with highest quality.
- Seedance 2.0 Fast Image-to-Video — Fast image-guided video generation.
- Seedance 2.0 Image-to-Video — Standard image-guided video generation.
Authentication
For authentication details, please refer to the Authentication Guide.
API Endpoints
Submit Task & Query Result
# Submit the task
curl --location --request POST "https://api.wavespeed.ai/api/v3/bytedance/seedance-2.0-fast/text-to-video" \
--header "Content-Type: application/json" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}" \
--data-raw '{
"aspect_ratio": "16:9",
"duration": 5
}'
# Get the result
curl --location --request GET "https://api.wavespeed.ai/api/v3/predictions/${requestId}/result" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}"
Parameters
Task Submission Parameters
Request Parameters
| Parameter | Type | Required | Default | Range | Description |
|---|---|---|---|---|---|
| prompt | string | Yes | - | Describe the scene, action, camera movement, and mood for the video. | |
| aspect_ratio | string | No | 16:9 | 16:9, 9:16, 4:3, 3:4 | The aspect ratio of the generated video. |
| duration | integer | No | 5 | 5, 10, 15 | The duration of the generated video in seconds. |
Response Parameters
| Parameter | Type | Description |
|---|---|---|
| code | integer | HTTP status code (e.g., 200 for success) |
| message | string | Status message (e.g., “success”) |
| data.id | string | Unique identifier for the prediction, Task Id |
| data.model | string | Model ID used for the prediction |
| data.outputs | array | Array of URLs to the generated content (empty when status is not completed) |
| data.urls | object | Object containing related API endpoints |
| data.urls.get | string | URL to retrieve the prediction result |
| data.has_nsfw_contents | array | Array of boolean values indicating NSFW detection for each output |
| data.status | string | Status of the task: created, processing, completed, or failed |
| data.created_at | string | ISO timestamp of when the request was created (e.g., “2023-04-01T12:34:56.789Z”) |
| data.error | string | Error message (empty if no error occurred) |
| data.timings | object | Object containing timing details |
| data.timings.inference | integer | Inference time in milliseconds |
Result Request Parameters
| Parameter | Type | Required | Default | Description |
|---|---|---|---|---|
| id | string | Yes | - | Task ID |
Result Response Parameters
| Parameter | Type | Description |
|---|---|---|
| code | integer | HTTP status code (e.g., 200 for success) |
| message | string | Status message (e.g., “success”) |
| data | object | The prediction data object containing all details |
| data.id | string | Unique identifier for the prediction, the ID of the prediction to get |
| data.model | string | Model ID used for the prediction |
| data.outputs | object | Array of URLs to the generated content (empty when status is not completed). |
| data.urls | object | Object containing related API endpoints |
| data.urls.get | string | URL to retrieve the prediction result |
| data.status | string | Status of the task: created, processing, completed, or failed |
| data.created_at | string | ISO timestamp of when the request was created (e.g., “2023-04-01T12:34:56.789Z”) |
| data.error | string | Error message (empty if no error occurred) |
| data.timings | object | Object containing timing details |
| data.timings.inference | integer | Inference time in milliseconds |