Generate 480p keyframe video transitions with Seedance 2.5 — faster and cheaper than the 720p tier. Try free — pay per generation. Relaxed-moderation (Spicy) endpoint, priced 10% above standard.
About this model
Seedance 2.5 First & Last Frame 480p is the faster, lower-cost tier of the Seedance 2.5 First & Last Frame endpoint, generating a smooth keyframe transition between a start and end image at 480p resolution. Ideal for previews and drafts before committing to a full 720p render. This is Muapi's Spicy endpoint for the same Seedance 2.5 model — the relaxed-moderation sibling of the standard tier, with lighter content-safety filtering and bolder, higher-contrast output.
Cost analysis
| Provider | Cost | Notes |
|---|---|---|
| muapiapp | $0.17/sec | Pay-per-generation pricing with no subscription. |
| Fal.ai | $0.2205/sec | MuAPI is ~23% cheaper than Fal.ai's 480p rate. |
| Replicate | Not available | Seedance 2.5 is not listed on Replicate. |
Pay-per-generation pricing with no subscription.
MuAPI is ~23% cheaper than Fal.ai's 480p rate.
Seedance 2.5 is not listed on Replicate.
* Competitor pricing is estimated based on similar model architectures and usage tiers.
Configuration schema
| Parameter | Type | Description | Default |
|---|---|---|---|
| Prompt | string | Text prompt describing the transition and motion. | Create a smooth transition from a cloudy sky to a quiet riverside park path, with natural camera movement and realistic lighting. |
| First and Last Frame Images | array | Exactly 2 images: [first_frame, last_frame]. | https://samplelib.com/jpeg/sample-clouds-400x300.jpg |
| Duration | int | The duration of the generated video in seconds. | 5 |
| Aspect Ratio | Enum (7 options) | Aspect ratio of the output video. | 16:9 |
| Seed | int | Random seed for reproducible generation. Use -1 for random. | 42 |
Text prompt describing the transition and motion.
Create a smooth transition from a cloudy sky to a quiet riverside park path, with natural camera movement and realistic lighting.Exactly 2 images: [first_frame, last_frame].
https://samplelib.com/jpeg/sample-clouds-400x300.jpgThe duration of the generated video in seconds.
5Aspect ratio of the output video.
16:9Random seed for reproducible generation. Use -1 for random.
42Developer documentation
Choose Your Start and End Images
images_list.Describe the Transition and configure duration/aspect_ratio.
Submit via the API
curl -X POST https://api.muapi.ai/api/v1/seedance-2.5-spicy-first-last-frame-480p \
-H "x-api-key: YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"prompt": "Create a smooth transition from a cloudy sky to a quiet riverside park path.",
"images_list": ["https://example.com/start.jpg", "https://example.com/end.jpg"],
"duration": 8
}'
GET /api/v1/predictions/{request_id}/result until status is completed, then retrieve the video URL from output.Frequently asked
Same request/response shape as the standard endpoint, but served on the relaxed-moderation Spicy tier, with reduced content-safety filtering and more dramatic, higher-contrast motion. Priced 10% above the standard tier.
Same model and features, but rendered at 480p — faster and cheaper, at $0.17/sec instead of $0.34/sec.
Exactly 2, in order: `[first_frame, last_frame]`, via the `images_list` field.
Between 4 and 30 seconds, configurable via the `duration` parameter.
Yes — pass an explicit `seed` value, or use -1 for a random seed each time.
It's usable for either — the 480p tier trades resolution for speed and cost, so it's best for drafts and iteration, while the 720p tier suits final deliverables.