Grok generates images through Aurora and videos through Grok Imagine Video 1.5, both accessible from the Imagine tab on grok.com or the Grok mobile app. This guide walks through account setup, prompt writing, image-to-video animation, pricing tiers, and the limits worth knowing before you rely on it for real production work.
What Grok Actually Uses to Generate Images and Videos
Grok’s visual generation is not one model wearing two hats. It is two separate systems sharing an interface. Aurora is xAI’s dedicated text-to-image model, and it handles every still image you generate, whether from a text prompt or an uploaded reference. Grok Imagine Video 1.5 is the video half, and it runs on what xAI calls the Aurora engine, an autoregressive mixture-of-experts network that processes text, image, video, and audio tokens together rather than in separate stages.
That joint-token design is why Grok’s videos ship with synchronized sound by default. Sound effects, ambience, and dialogue are generated in the same pass as the video and land on the action, with speech that syncs more clearly than earlier versions. You are not bolting on audio afterward. It arrives baked into the clip.
How to Access Grok Imagine, Step by Step
1. Go to grok.com or open the Grok app. It’s available as a web app and on iOS and Android.
2. Sign in with your X account, or create one if you don’t have it. Grok Imagine is tied to the X/xAI login system.
3. Open the Imagine tab. On desktop it sits in the top navigation next to Chat and Trending; on mobile it’s in the bottom bar.
4. Choose image or video mode. Image generation is usually the default view, with a toggle to switch to video.
5. Enter your prompt or upload a reference image, then hit Generate.
6. Download your result. Images typically render in 10–30 seconds, video in 25–90 seconds depending on the model tier and clip length.
Access has changed since launch. Free-tier image and video generation is gone as of 2026. You now need SuperGrok Lite ($10/month), full SuperGrok ($30/month), or X Premium+ ($40/month) to generate anything through Imagine.
Generating Images With Aurora
Aurora responds best to prompts that read like a photographer’s brief rather than a vague idea. Structure your prompt around four elements: subject, style, lighting, and composition. Aurora is particularly strong at photorealistic rendering and at placing legible text and logos inside an image, which is rarer among image models.
A woman in her 30s sitting on a wooden bench in Central Park, reading a book, autumn afternoon, golden hour lighting, shallow depth of field, Canon 85mm lens style, photorealistic.
Tips for Better Aurora Results
- Name the style explicitly. “Photorealistic,” “watercolor,” “cinematic,” and “anime” all produce visibly different outputs, so don’t leave style to inference.
- Keep on-image text short. Aurora handles text and logo placement better than most rivals, but short strings render far more reliably than full sentences.
- Specify composition and lens. Camera angle, framing, and lens references (wide shot, 85mm, aerial view) push Aurora toward more deliberate results.
- Expect to iterate. Faces, product details, and precise text placement often need two or three attempts before they’re usable.
Generating Videos With Grok Imagine Video 1.5
Video generation splits into two core workflows, and picking the right one matters more than prompt wording.
Image-to-Video: the strongest mode
You upload a still image, describe the motion, and the model animates it while preserving the composition, subject identity, and visual style of the source, treating the input image as the first frame rather than a loose reference. This is the mode to use whenever you already have a strong image and want controlled, predictable motion.
Because the model carries identity and appearance directly from your source image, don’t waste prompt space re-describing hair, clothing, or facial features. Spend your words instead on motion dynamics, camera behavior, and the acoustic environment you want generated alongside the visuals.
Slow cinematic push-in as embers drift across the battlefield and the helmet’s crest stirs gently in the wind.
Text-to-Video: building from nothing
Use this when you have no reference image. It’s more generative and less controlled, so it works best on short, clearly described scenes with one obvious action rather than complex multi-beat sequences.
A tiny robot barista slides a glowing coffee cup toward the camera, steam rises dramatically, neon café background, playful motion, 6-second video.
Video Extend: chaining clips into longer sequences
A single clip caps out well under a minute, but Video Extend lets you select the final frame of a generated clip and continue from that exact point, preserving motion continuity, character position, and lighting across the join. Chaining extensions is how creators build sequences that outrun the per-clip duration limit.
Grok Imagine Video 1.5: What Changed
xAI’s own release notes frame Video 1.5 as an upgrade “across every dimension that matters for real creative work.” Three changes stand out for anyone deciding whether to switch workflows:
- Movement holds together better over the length of a clip, with fewer warps and more believable weight and momentum than the prior model.
- Video 1.5 Fast produces a 6-second, 720p clip in about 25 seconds, nearly double the speed of the previous model’s 40-plus seconds.
- At launch, Video 1.5 jumped 52 Elo points over version 1.0 on the Image-to-Video Arena leaderboard, moving past Seedance 2.0, HappyHorse 1.0, and Google Veo.
Limitations Worth Knowing Before You Rely on Grok
- Clip length is short. A single generation runs 1–15 seconds, and even with extensions you’re working within roughly a 30-second ceiling fine for hooks and teasers, not for narrative-length video.
- Resolution tops out at 720p. There’s no current path to 1080p through the standard interface or API, so polished brand deliverables may still need external upscaling.
- Failed or moderated generations still count against your daily quota, and hitting your cap can silently drop output quality from 720p to 480p.
- Batch outputs expire fast. Image and video URLs generated through the API expire after one hour, so build downloading into your workflow immediately.
- It’s a drafting tool, not a finishing tool. Grok Imagine is best used to test direction quickly, then refine the winning result in a dedicated editing tool if the project needs a polished finish.
Frequently Asked Questions
1. Is Grok Imagine free to use?
No. Image and video generation now sits behind a paid tier. SuperGrok Lite starts at $10/month for basic Aurora image generation, while full image and video access requires SuperGrok at $30/month or X Premium+ at $40/month.
2. What AI model powers Grok’s image and video generation?
Aurora generates images. Grok Imagine Video 1.5, running on the Aurora engine, generates video with synchronized audio produced in the same pass.
3. How long can a Grok-generated video be?
A single clip runs roughly 1 to 15 seconds. Video Extend lets you chain segments onto an existing clip up to a combined 30-second maximum.
4. Can Grok animate an existing photo into a video?
Yes, image-to-video is Grok Imagine’s strongest mode. Upload a still image, describe the motion, and the model treats it as the first frame, preserving subject, composition, and style while adding movement and audio.
5. Does Grok add sound to generated videos automatically?
Yes. Dialogue, sound effects, ambience, and background music are generated in the same pass as the video, with no separate audio step required.
6. What is the difference between Grok’s Normal, Fun, and Spicy modes?
These adjust creative tone and content restrictions. Normal keeps output standard, Fun leans playful and exaggerated, and Spicy loosens some restrictions, though moderation and an 18+ account setting still apply.
Written by Emmanuel for AI Sphere Hub — covering AI tools, model releases, and practical AI workflows for global and African audiences.