SpaceXAI: Grok Imagine Video 1.5 Lite API
SpaceXAI's Grok Imagine Video 1.5 Lite is a fast, cost-efficient text- and image-to-video model that generates 1–15 second clips with synchronized native audio.
Grok Imagine Video 1.5 Lite, released by SpaceXAI (xAI) on October 6, 2026, is a distilled version of Grok Imagine Video 1.5 built for speed and affordability. It generates video clips from text prompts or from a single starting image used as the first frame, producing output with native synchronized audio—including sound effects, ambient noise, and dialogue—so no separate audio synthesis or dubbing is needed. Clips run 1 to 15 seconds at 24fps, with resolution options of 480p, 720p, and 1080p; 1080p is achieved by rendering at 720p and upscaling. Seven aspect ratios are supported: 1:1, 16:9, 9:16, 4:3, 3:4, 3:2, and 2:3, covering both landscape and vertical formats.
This model is best suited for high-volume, rapid video generation where speed and low unit cost matter more than maximum fidelity. Typical uses include short-form social media content for vertical platforms such as Reels, Shorts, and TikTok; quick concept previews that turn written ideas into visual motion samples; and iterating on a single concept by running the same or similar prompts multiple times to compare results. Because it automatically generates a complete audio track, it also simplifies workflows for scenes that need ambience or lip-synced speech.
As a distilled variant, Grok Imagine Video 1.5 Lite trades some visual detail and fidelity for efficiency and is the lowest unit-cost option in the Grok Imagine video model family. It does not support the multi-image reference feature found in the flagship version, and its 1080p output is upscaled from 720p rather than native. For best results, prompts for text-to-video should describe the scene, subject motion, camera movement, and lighting in detail; background sounds such as rain on a window or crowded café ambience can be specified, and dialogue scenes should identify the speaker and place the exact lines in quotation marks.
Updated:
MODEL ID
grok-imagine-video-1.5-lite- Output
- video
Highlights
- Text and image to video
- Native synchronized audio
- 1–15 second clips at 24fps
- 480p, 720p, and 1080p output
- Seven aspect ratios
- Lowest unit cost in its family
Providers
Compare API prices across providers. Select a provider to view all charges and conditions.
Video specifications
- Aspect ratios
- 16:9 / 9:16 / 1:1 / 4:3 / 3:4 / 3:2 / 2:3
- Duration · Minimum
- 1 seconds
- Duration · Maximum
- 15 seconds
- Duration · Step
- 1 seconds
- Resolutions
- 480p / 720p / 1080p
API reference
Model-specific protocol details are not published. Check the API reference for integration requirements.
API reference →Frequently asked questions
What is SpaceXAI: Grok Imagine Video 1.5 Lite?
Grok Imagine Video 1.5 Lite, released by SpaceXAI (xAI) on October 6, 2026, is a distilled version of Grok Imagine Video 1.5 built for speed and affordability. It generates video clips from text prompts or from a single starting image used as the first frame, producing output with native synchronized audio—including sound effects, ambient noise, and dialogue—so no separate audio synthesis or dubbing is needed. Clips run 1 to 15 seconds at 24fps, with resolution options of 480p, 720p, and 1080p; 1080p is achieved by rendering at 720p and upscaling. Seven aspect ratios are supported: 1:1, 16:9, 9:16, 4:3, 3:4, 3:2, and 2:3, covering both landscape and vertical formats. This model is best suited for high-volume, rapid video generation where speed and low unit cost matter more than maximum fidelity. Typical uses include short-form social media content for vertical platforms such as Reels, Shorts, and TikTok; quick concept previews that turn written ideas into visual motion samples; and iterating on a single concept by running the same or similar prompts multiple times to compare results. Because it automatically generates a complete audio track, it also simplifies workflows for scenes that need ambience or lip-synced speech. As a distilled variant, Grok Imagine Video 1.5 Lite trades some visual detail and fidelity for efficiency and is the lowest unit-cost option in the Grok Imagine video model family. It does not support the multi-image reference feature found in the flagship version, and its 1080p output is upscaled from 720p rather than native. For best results, prompts for text-to-video should describe the scene, subject motion, camera movement, and lighting in detail; background sounds such as rain on a window or crowded café ambience can be specified, and dialogue scenes should identify the speaker and place the exact lines in quotation marks.
How is usage billed?
Your bill depends on the provider you use, its prices and your usage. Longer inputs or other conditions may have different prices. Billed based on the actual generation cost. See your bill for the final amount.
What input modalities does Grok Imagine Video 1.5 Lite support?
It supports text-to-video generation and image-to-video generation using a single starting image as the first frame. Output is video with native synchronized audio.
How long are the generated video clips?
Clips can be 1 to 15 seconds long and are generated at 24fps.
What resolutions and aspect ratios are available?
Resolution options are 480p, 720p, and 1080p. Seven aspect ratios are supported: 1:1, 16:9, 9:16, 4:3, 3:4, 3:2, and 2:3.
Does the model generate audio automatically?
Yes. It automatically creates synchronized sound effects, ambient noise, and dialogue, including lip-synced speech, so you get a finished video with a complete audio track.
How does it differ from Grok Imagine Video 1.5?
Grok Imagine Video 1.5 Lite is a distilled version that sacrifices some visual detail and fidelity for faster speed and lower unit cost. It also lacks the multi-image reference feature available in the flagship model.
Is 1080p output native?
No. 1080p is produced by rendering at 720p and upscaling, rather than native 1080p generation.