--- title: "Grok Imagine Video 1.5 Lite: Specs, Limits & Tips | imaginary.app" description: "Grok Imagine Video 1.5 Lite is xAI’s lighter 1.5 video model for simple clips. How it differs from full 1.5, its upscaled 1080p, audio and prompt tips." url: https://www.imaginary.app/models/grok-imagine-video-lite --- Updated November 2026 # Grok Imagine Video 1.5 Lite Grok Imagine Video 1.5 Lite is the lighter model in xAI’s Grok Imagine Video 1.5 generation, which xAI recommends for simple videos. It shares 1.5’s documented clip-length range and aspect ratios but reaches 1080p by upscaling 720p and drops the full model’s reference and keyframe controls, which makes it a drafting and iteration model rather than a final-render one. Key takeaways - Lite is its own xAI model (grok-imagine-video-1.5-lite), not a setting on the full 1.5 model. - xAI documents 1080p output for Lite reached by upscaling 720p, rather than rendering it natively as full 1.5 does. - Reference images, voice references, first/last frame and keyframes are full-1.5 features; xAI lists none of them for Lite. - Clips come with sound. xAI’s docs say Lite generates native audio with lip-synced speech, and a test generation through our pipeline on November 10, 2026 came back with a stereo audio track. xAI Generate with Grok Imagine Video 1.5 Lite Write a prompt, pick Grok Imagine Video 1.5 Lite, choose your settings and see the credit cost before you start. Failed generations return their credits. [Open the generator](https://www.imaginary.app/generate)[View Pricing](https://www.imaginary.app/pricing) Sign in with Google to create an account; buy credits only when you need them. ## On imaginary.app These are the settings our generator offers for Grok Imagine Video 1.5 Lite right now, read from our live model catalog. - Type Video, from a text prompt - Resolutions 480p, 720p, 1080p - Aspect ratios 16:9, 9:16, 1:1 - Clip lengths 5 s, 10 s - Audio Always included - Starting price 0.92 credits (about $0.20–$0.23) at the lowest settings (480p, 16:9, 5 s, sound included) The generator shows the exact credits for your settings before you start. USD ranges depend on which [pack or plan](https://www.imaginary.app/pricing) you bought credits with. If a generation fails, or you cancel it before it starts, its credits go back to your balance. Very rarely, when we can't confirm with the provider whether a generation finished, the credits stay reserved while we check, rather than being charged. Models other than Veo 3.1 need an account that has bought a credit pack or plan, and they have daily usage limits, per account and across the site: if one is reached, the generator tells you and you can try again the next day (limits reset at midnight UTC). ## Same generation, lighter model xAI publishes Lite as a separate model id alongside grok-imagine-video-1.5 and, in its video generation guide, recommends Lite “for simple videos”. The two share xAI’s documented clip-length range and aspect-ratio list, so a prompt written for one carries over to the other; Lite is aimed at straightforward scenes, while full 1.5 gets the controls for complex work. ## 1080p by upscaling 720p Both models offer 480p, 720p and 1080p, but xAI states that Lite “reaches 1080p for text-to-video and image-to-video by upscaling 720p”, whereas full 1.5 renders 1080p natively. Choosing 1080p on Lite gives you a larger frame, not more generated detail, so it is most useful when your edit or platform needs a 1080p file. ## What Lite leaves out xAI’s model comparison lists reference images (up to 14), voice references (up to 3), first/last frame and up to 4 keyframes for full 1.5, and marks all four as not supported on Lite. None of those are offered on imaginary.app for either model, since we run text-to-video only, but the gap tells you what Lite is for: describe a scene in words and get a quick, coherent clip back. ## Sound included xAI’s generation guide says videos from both grok-imagine-video-1.5 and grok-imagine-video-1.5-lite include an audio track by default, with lip-synced speech. fal’s Lite endpoint, which we use, has no audio parameter, so there is no way to switch sound off, and its page doesn’t mention audio. We checked: a 480p, 5-second test generation through our pipeline on November 10, 2026 came back with a stereo audio track, consistent with xAI’s docs. Describe the sound you want, or the model will choose it. ## Grok Imagine Video 1.5 Lite specs from xAI What xAI and its API partners document for the model itself. A maker spec is not always a setting our generator offers: what you can choose on imaginary.app is listed in the block above. | Spec | As documented | Source | | ------------------------------- | -------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------ | | Maker | xAI | [xAI docs — grok-imagine-video-1.5-lite model page](https://docs.x.ai/developers/models/grok-imagine-video-1.5-lite) | | Model id | grok-imagine-video-1.5-lite, part of the Grok Imagine Video 1.5 generation | [xAI docs — grok-imagine-video-1.5-lite model page](https://docs.x.ai/developers/models/grok-imagine-video-1.5-lite) | | xAI’s positioning | Recommended by xAI for simple videos | [xAI docs — Video generation](https://docs.x.ai/developers/model-capabilities/video/generation) | | Clip length (xAI API) | 1 to 15 seconds (the same range as full 1.5) | [xAI docs — Video overview and model comparison](https://docs.x.ai/developers/model-capabilities/video/overview) | | Resolution | 480p, 720p and 1080p; 1080p is upscaled from 720p | [xAI docs — Video generation](https://docs.x.ai/developers/model-capabilities/video/generation) | | Audio (xAI API) | Native audio with lip-synced speech, on by default | [xAI docs — Video generation](https://docs.x.ai/developers/model-capabilities/video/generation) | | Aspect ratios on fal’s endpoint | 16:9, 4:3, 3:2, 1:1, 2:3, 3:4, 9:16 | [fal — Grok Imagine Video 1.5 Lite schema (llms.txt)](https://fal.ai/models/xai/grok-imagine-video/v1.5/lite/text-to-video/llms.txt) | | Not supported on Lite | Reference images, voice references, first/last frame, keyframes | [xAI docs — Video overview and model comparison](https://docs.x.ai/developers/model-capabilities/video/overview) | | xAI API regions | us-east-1 and us-west-2 (full 1.5 also lists us-saltlake-2) | [xAI docs — grok-imagine-video-1.5-lite model page](https://docs.x.ai/developers/models/grok-imagine-video-1.5-lite) | ## Who Grok Imagine Video 1.5 Lite is for ### Good fit - Testing several versions of an idea before committing to a full-1.5 or Veo render. - Simple scenes with one subject and one action, which is what xAI recommends Lite for. - Social clips where 720p detail is enough and turnaround matters more than fine texture. - Storyboards and animatics: checking framing, pacing and camera direction early. ### Look elsewhere if - Final 1080p deliverables where faces, text or fine texture must hold up; full 1.5 renders 1080p natively. - Busy scenes with several characters interacting or complex choreography. - Work that depends on references or pinned frames. Those are full-1.5 features on xAI’s API, and neither model offers them on imaginary.app. - Silent footage you plan to score yourself; clips come with sound and fal’s Lite endpoint has no switch to turn it off. ## Prompt tips for Grok Imagine Video 1.5 Lite Keep it to one subject, one action and one camera move. Lite is positioned for simple videos, and a prompt with a single clear beat is the most likely to come out clean. Example prompt (written by us) ``` A paper boat drifts down a rain-filled gutter on a quiet street, low angle at water level, slow tracking shot following the boat. Overcast daylight, wet reflections on the asphalt. ``` Compose the first frame in words. xAI explains that text-to-video renders a first frame from the prompt and then animates it, so state subject, framing and light up front, then add a short line on what we should hear. Iterate at 720p, Lite’s native detail level, and only switch to 1080p when you need a bigger file. Once a prompt works, it ports directly to full 1.5 for a native-1080p version. Example prompt (written by us) ``` Top-down shot of a barista pouring steamed milk into a latte, a leaf pattern forming in the foam. Soft window light, dark wooden counter, shallow depth of field. ``` Describe motion with physical verbs (drifts, tumbles, sways) rather than abstract ones (dynamic, epic). Simple, concrete motion is easier for a lighter model to render consistently. Example prompt (written by us) ``` A red kite tumbles and then catches the wind above a grassy hill at golden hour, the camera slowly tilting up to follow it. Long shadows across the grass. ``` ## Limitations - Grok Imagine Video 1.5 Lite is made by xAI; imaginary.app is not affiliated with xAI. - Lite’s 1080p option is upscaled from 720p, so it doesn’t add generated detail over 720p. - On imaginary.app Lite runs text-to-video only. xAI’s API also accepts an image for Lite, but we don’t offer image-to-video for it. - xAI has not published a separate announcement or release date for Lite, and gives no speed figures for it, so we make no speed claims here. - Results pass xAI’s moderation; a clip can be filtered or a prompt rejected. ## Related models - [Grok Imagine Video 1.5](https://www.imaginary.app/models/grok-imagine-video) - [Veo 3.1 Lite](https://www.imaginary.app/models/veo-3-1-lite) - [LTX 2.3 Fast](https://www.imaginary.app/models/ltx-2-3) - [PixVerse V6](https://www.imaginary.app/models/pixverse-v6) - [Every model on imaginary.app](https://www.imaginary.app/models) - [AI video generator overview](https://www.imaginary.app/ai-video-generator) ## Frequently asked questions ### Grok Imagine Video 1.5 Lite vs 1.5: which should I use? Use Lite for simple scenes and fast iteration, and full 1.5 for final renders. Both generate sound, but full 1.5 renders 1080p natively while Lite upscales 720p, and only full 1.5 supports references, voice references, first/last frame and keyframes on xAI’s API. ### Does Grok Imagine Video 1.5 Lite have audio? Yes. xAI’s docs say Lite generates an audio track by default, with lip-synced speech, and a test generation through our pipeline on November 10, 2026 came back with a stereo audio track. fal’s Lite endpoint, which we use, has no switch to turn sound off. ### What resolution is Grok Imagine Video 1.5 Lite? xAI lists 480p, 720p and 1080p for Lite, with 1080p produced by upscaling 720p. The resolutions we offer are listed on this page. ### Is Lite the same as Grok Imagine Video 1.5 Fast in the Grok app? xAI hasn’t said they are the same. Its June 2026 announcement names Video 1.5 Fast as the version in grok.com/imagine and the mobile apps, while grok-imagine-video-1.5-lite is a separate model id in xAI’s API docs. ## Sources Prices, model specs and dates on this page were checked on November 10, 2026. Third-party prices change; check the source before you rely on a number. - [xAI docs — Video overview and model comparison](https://docs.x.ai/developers/model-capabilities/video/overview) - [xAI docs — Video generation](https://docs.x.ai/developers/model-capabilities/video/generation) - [xAI docs — grok-imagine-video-1.5-lite model page](https://docs.x.ai/developers/models/grok-imagine-video-1.5-lite) - [xAI docs — grok-imagine-video-1.5 model page](https://docs.x.ai/developers/models/grok-imagine-video-1.5) - [xAI — Grok Imagine Video 1.5 announcement (June 16, 2026)](https://x.ai/news/grok-imagine-video-1-5) - [fal — Grok Imagine Video 1.5 Lite text-to-video](https://fal.ai/models/xai/grok-imagine-video/v1.5/lite/text-to-video) - [fal — Grok Imagine Video 1.5 Lite schema (llms.txt)](https://fal.ai/models/xai/grok-imagine-video/v1.5/lite/text-to-video/llms.txt) - [imaginary.app pricing](https://www.imaginary.app/pricing) How we checked: model specs come from xAI's and its API partners' pages listed above; the imaginary.app settings and starting price come from our live model catalog. Example prompts are ours, not xAI's. Commercial use: licence and usage terms for Grok Imagine Video 1.5 Lite are set by xAI. Check them, and our [Terms of Service](https://www.imaginary.app/terms-of-service), before you publish what you make. xAI ## Try Grok Imagine Video 1.5 Lite on your own prompt One account and one credit balance for Grok Imagine Video 1.5 Lite, Veo 3.1 and every other video model we offer. The price shows before you generate. [Open the generator](https://www.imaginary.app/generate)[View Pricing](https://www.imaginary.app/pricing) Sign in with Google to create an account; buy credits only when you need them.