Grok Imagine 1.5 on ToVideo
Generate cinematic clips with clearer synced speech, more believable weight and momentum, and flexible inputs. Run text-to-video, first-frame image-to-video, or multi-image reference-to-video — with native audio in the same pass.
Text-to-video · Image-to-video · Reference-to-video · Native audio
What is Grok Imagine 1.5?
Grok Imagine Video 1.5 is xAI’s mid-2026 upgrade to the Imagine video line — announced as generally available on the Imagine API (model id grok-imagine-video-1.5) with a faster companion on Grok apps. Official messaging highlights better motion, more believable physics, and clearer single-pass audio: sound effects, ambience, and dialogue generated with the picture so speech lands on the action. Later API and platform updates expanded text-to-video, native 1080p for text and first-frame modes, and reference-to-video with multiple visual anchors. On ToVideo you run Grok Imagine 1.5 as grok-imagine-video-1.5-preview across text-to-video, image-to-video (one first frame), and reference-to-video (2–7 images). Durations span about 1–15 seconds; quality includes 480p, 720p, and 1080p where the mode allows; aspect ratios cover auto, 16:9, 9:16, 1:1, 3:2, and 2:3 when the mode exposes them. Native audio is generated automatically. Credits appear before Generate so you can iterate without surprises.
Single-pass audio that tracks the action
xAI positions 1.5 around audio and speech co-generated with video — clearer dialogue and effects that sync to motion instead of feeling bolted on. That matters for trailers, product spots, and social clips where silence kills credibility. On ToVideo, native audio comes with Grok Imagine 1.5 runs; write prompts that name ambience, Foley, or spoken lines when sound is part of the brief.
Motion and physics that hold over the clip
Launch notes call out fewer warps and more believable weight and momentum across the length of a generation — a practical upgrade when characters walk, objects fall, or cameras push in. Keep one primary motion verb per shot so physics stay readable. Combine duration carefully: longer clips need cleaner action plans or the model may dilute focus.
Three input modes: text, first frame, references
Text-to-video explores blank-slate scenes and ratios. Image-to-video animates one still as the opening frame — aspect follows the image. Reference-to-video (ToVideo’s video-to-video tab for this model) blends 2–7 stills so subjects stay anchored while you describe the continuous shot. Official docs also describe reference-to-video capped below full 1080p; ToVideo mirrors that by keeping 1080p for text and first-frame modes only.
Flexible duration and resolution ladder
Whole-second lengths from about 1 to 15 seconds let you ship micro-hooks or short narrative beats. Quality tiers include 480p for cheap drafts, 720p for most social delivery, and 1080p for hero text or first-frame exports. Default duration on ToVideo is commonly six seconds — raise length only after the look locks so credits stay efficient.
Why teams pick Grok Imagine 1.5
Choose Grok Imagine 1.5 when you need synced sound with the picture, stronger physical motion, and a clear ladder from prompt-only drafts to multi-image identity control — without leaving ToVideo.
Grok Imagine 1.5 capabilities that matter in practice
Map xAI launch strengths to concrete ToVideo controls: mode, duration, quality, aspect ratio, and image counts.
Text-to-video with flexible ratios
Generate with auto, 16:9, 9:16, 1:1, 3:2, or 2:3. Describe scene, camera, and sonic cues; explore at 480p/720p, then export 1080p when locked.
Image-to-video from a first frame
Upload one still (JPEG, PNG, or WebP, max 10MB). Aspect follows the image; native audio is generated automatically with the motion.
Reference-to-video with 2–7 images
Blend multiple subjects into one continuous shot. 1080p is not available in this mode; keep references coherent and prompts blend-focused.
Native synced audio
Sound effects, ambience, and dialogue co-generate with the video. Name the audio world in the prompt when the brief needs speech or Foley.
Durations from ~1 to 15 seconds
Ship micro-hooks or short narrative beats in whole seconds. Default often sits near six seconds — extend only after the look works.
480p / 720p / 1080p quality ladder
Draft cheaply at 480p, deliver most social at 720p, and use 1080p for text and first-frame hero exports. Reference mode caps below 1080p.
Grok Imagine 1.5 FAQ
Straight answers for marketers and creators evaluating Grok Imagine Video 1.5 on ToVideo.
Try Grok Imagine 1.5 on ToVideo
Open the video generator, select Grok Imagine 1.5, choose text, first-frame, or multi-image reference mode, set duration and quality, and generate with credits visible upfront.