Grok Imagine

Positioning Overview

grok-imagine/text-to-video is the text-to-video line within xAI's Grok Imagine series, accessible through the unified HiAPI.ai interface. A single text prompt is all it takes to generate a short video. It offers three motion styles—fun, normal, and spicy—supports durations of 6 to 30 seconds, and lets you choose between 480p, 720p, and 1080p quality, with aspect ratios covering landscape, portrait, and square. It is suited for developers who need to quickly produce social media clips, advertising concept prototypes, or animated storyboard previews and integrate them into their products.

Core Highlights

• Three motion modes to adjust video style — The fun, normal, and spicy tiers correspond to stronger creative expression, balanced output, and more intense motion respectively, so the same prompt can switch tempo according to placement needs.
• Duration and resolution combine as needed — A single generation supports durations of 6 to 30 seconds, with resolution options of 480p, 720p, and 1080p, letting you balance generation speed, quality, and cost yourself.
• Multiple aspect ratios adapt to mainstream placements at once — Five built-in aspect ratios—16:9, 9:16, 1:1, 3:2, and 2:3—let landscape, portrait, and square assets be used without secondary cropping.

Capability Description

Direct text-to-video generation: Pass in a prompt of up to 5000 characters to get a video, with no reference images or storyboard assets required—ideal for quickly producing clips from scratch.

Controllable generation parameters: Duration, resolution, aspect ratio, and motion mode are all explicit input parameters, so developers can set them statically or send them dynamically in requests based on business scenarios.

Adjustable motion style: The mode parameter affects the motion style and intensity of the footage, allowing you to switch between creative expression and dynamic movement depending on the content type.

Use Cases

• Social media operators: generate portrait clips from a single line of copy — Generate portrait assets at a 9:16 ratio with a shorter duration for direct use on short-video platforms or in feed advertising.
• Advertising creative teams: batch-produce script concept videos — Generate prompts for different creative directions into 6- to 30-second clips for internal pitch comparisons and creative previews.
• Product developers: integrate text-to-video capabilities into apps — Connect to generation capabilities through the unified interface so end users can input a description and get a downloadable video clip.

Limitations and Selection Advice

A single generation is limited to 6 to 30 seconds and cannot produce longer shots at once; long narratives need to be split into multiple segments and stitched together. Although prompts support Chinese, English descriptions yield more stable visual results, so multilingual content requires your own evaluation. The combination of resolution and duration affects generation time; to prioritize speed, choose 480p and shorter durations. For scenarios that need reference-image-guided visuals or audio-video synchronization, use the image-to-video line or tools with audio capabilities instead.