Grok Imagine Video AI Video Generator (Grok Imagine Video 1.5)
xAI's video model: expressive, fast and more permissive about what it will animate.
Grok Imagine Video is xAI's clip model, the video half of the Grok Imagine family. Like its image sibling it has a strong personality: high contrast, confident stylisation and energetic motion, rather than the neutral realism the Google models aim for.
It is also the most permissive video model here, which matters in practice. Creative prompts involving people and stylised subjects that get refused elsewhere frequently run here, so it is the fallback when a legitimate idea is being blocked.
It renders 720p in all three aspect ratios, takes a start-frame image, and sits at the cheaper end of the price range. Clips come back silent.
What Grok Imagine Video is best at
Stylised, expressive clips
Character and action moments
Prompts other video models refuse
Fast, cheap creative exploration
Expressive motion Energetic, committed movement with dramatic lighting, rather than cautious realism.
More permissive Animates people and stylised subjects that stricter models decline, so fewer creative ideas dead-end.
Distinct look High contrast and bold colour give clips a recognisable style you can use deliberately.
Cheap for what it is Priced near the bottom of the range while producing more characterful output than its price suggests.
Where Grok Imagine Video falls short
No audio.
720p output.
Loose prompt interpretation, so precise framing and timing instructions drift.
Realism is not its strength. For believable product or documentary footage, use Gemini Omni or Luma.
Grok Imagine Video specifications
Provider: xAI
Model ID: grok-imagine-video-1.5
Resolution: 720p
Audio: No
Clip length: 4 or 8 seconds
Aspect ratios: 16:9, 9:16, 1:1
Provider model ID: grok-imagine-video-1.5
Aspect ratios: 16:9, 9:16, 1:1
Clip lengths: 4, 8 seconds
What you can do with Grok Imagine Video on this page
Stylised clip Short, bold, high-contrast motion where mood matters more than realism.
Character moment Animate a character or avatar with expression and attitude.
Animate an image Upload a still, usually one of your own generations, and give it motion.
Prompts that work on Grok Imagine Video
Mood and palette first
Neon noir. A figure walks away down a rain-soaked alley, cyan and magenta light only, hard reflections, slow push in.
Grok responds to mood far more than to technical direction. A named palette is the most reliable control you have.
One decisive action
A warrior raises a sword once as embers drift past. One action, strong silhouette held throughout.
Loose interpretation blends stacked instructions together. A single decisive beat keeps the clip readable.
Animate your own still
Use a Grok Imagine image as the start frame, then ask only for atmosphere: drifting particles, a slow push in.
Pairing the image and video models keeps the look consistent, and limiting the motion protects the frame you liked.
What Grok Imagine Video costs
Cost on Prompt Reverse, 4 second clip: 30 AI Credits, 8 second clip: 50 AI Credits. AI Credits come from a one-time credit pack and never expire, with no subscription and no separate provider account.
Grok Imagine Video vs the other models
Grok Imagine: The matching image model. Generate a still, then animate it here.
It is xAI's video generation model, the video half of Grok Imagine. On Prompt Reverse it renders 720p clips of 4 or 8 seconds from text or from a start-frame image.
What is it best at?
Stylised, expressive clips with strong mood and motion. It is the least realistic and the most characterful video model here.
Is Grok Imagine Video more permissive?
Yes. It animates people and stylised subjects that stricter models refuse, which makes it the practical fallback for creative prompts being blocked elsewhere.
Does it generate sound?
No. Only the Gemini Omni tiers generate audio here.