Generate text to video with Grok Imagine Video 1.5 Lite (xAI): native audio, up to 15 seconds, via one simple API endpoint. Generate videos with Grok Imagine Video 1.5 Lite (xAI) from a text prompt, with native audio, up to 15 seconds.
Generate videos with Grok Imagine Video 1.5 Lite (xAI) from a text prompt, with native audio, up to 15 seconds.
About this model
Grok Imagine Video 1.5 Lite Text-to-Video is xAI's fast, low-cost video model on a dedicated Muapi endpoint. Generate clips of 1 to 15 seconds with a native audio track in 480p, 720p or 1080p, across nine aspect ratios from 16:9 and 9:16 to 21:9 and 5:2. The Lite tier is built for high-volume drafts, social clips and fast iteration at a fraction of the cost.
Cost analysis
| Provider | Cost | Notes |
|---|---|---|
| muapiapp | $0.02/sec at 480p, $0.035/sec at 720p, $0.0625/sec at 1080p (8s at 480p = $0.16) | Pay-as-you-go with no subscription required. |
Pay-as-you-go with no subscription required.
** Competitor pricing is estimated based on similar model architectures and usage tiers.
Configuration schema
| Parameter | Type | Description | Default |
|---|---|---|---|
| Prompt | string | Text description of the video. | A dog running on a sunny beach, cinematic slow motion. |
| Aspect Ratio | Enum (9 options) | Aspect ratio of the video. | 16:9 |
| Resolution | Enum (3 options) | Output resolution. 1080p is generated by upscaling 720p. | 480p |
| Duration (seconds) | int | Video duration in seconds. | 8 |
| Generate Audio | boolean | Generate a native audio track. Turn off for a silent video. | true |
Text description of the video.
A dog running on a sunny beach, cinematic slow motion.Aspect ratio of the video.
16:9Output resolution. 1080p is generated by upscaling 720p.
480pVideo duration in seconds.
8Generate a native audio track. Turn off for a silent video.
trueDeveloper documentation
Input: Write a prompt describing the scene and motion.
Set duration, resolution and audio: 1-15 seconds (default 8), resolution 480p, 720p or 1080p (1080p is upscaled from 720p), and generate_audio on or off.
Submit and poll: The API returns a request_id; poll GET /api/v1/predictions/{request_id}/result until status is completed.
curl -X POST "https://api.muapi.ai/api/v1/grok-imagine-video-1-5-lite-text-to-video" \
-H "x-api-key: $MUAPI_KEY" \
-H "Content-Type: application/json" \
-d '{"prompt":"A dog running on a sunny beach, cinematic slow motion.","aspect_ratio":"16:9","duration":8,"resolution":"480p","generate_audio":true}'
Frequently asked
Yes. generate_audio defaults to true and produces a native audio track. Set it to false for a silent video.
From 1 to 15 seconds, with a default of 8 seconds.
480p, 720p and 1080p. 1080p is generated by upscaling 720p.
16:9, 9:16, 1:1, 4:3, 3:4, 3:2, 2:3, 21:9 and 5:2.
$0.02/sec at 480p, $0.035/sec at 720p, $0.0625/sec at 1080p (8s at 480p = $0.16)