Grok Imagine Adds 15-Second HD Video With Native Audio

SAN FRANCISCO — xAI has pushed a major upgrade to Grok Imagine, its image-and-video generator, extending clip length to 15 seconds at high definition with native audio and vaulting the tool to the top of an independent video-generation leaderboard.

Elon Musk showcased the update on X, where the feature is built directly into the app used by hundreds of millions of people. The latest release, Grok Imagine Video 1.5, now produces 720p clips of up to 15 seconds with synchronized sound, and according to comparative rankings sits at number one on the Image-to-Video Arena. The pace of iteration follows the agent mode xAI added days earlier, which let Grok generate visuals autonomously.

Adoption at staggering scale

The clearest measure of Grok Imagine's momentum is usage. xAI reports the tool has generated more than 1.2 billion videos in the past 30 days alone, a figure that places it among the most-used AI media tools in the world. That volume is a direct benefit of distribution: Grok Imagine ships inside the Grok app and the X platform, giving it a built-in audience that standalone competitors cannot match.

Under the hood, the feature relies on xAI's proprietary Aurora model to turn text prompts into images and short video, with particular attention paid to accurate text rendering, historically a weak point for AI image tools. The move to longer clips with native audio pushes Grok from still-image novelty toward genuinely useful short-form video.

A multimodal push

The upgrade is part of xAI's broader effort to make Grok a full multimodal system rather than a text chatbot. The company has been shipping rapid updates across its stack, including new agent tools and a refreshed default model, and Musk has framed image and video generation as central to that roadmap.

Longer, higher-quality clips with sound open the door to more practical uses, from social content to marketing and rapid prototyping. As reported by Teslarati and industry trackers, Musk has been publicly promoting the feature's creative output, a sign of confidence that Grok Imagine is ready for mainstream use rather than niche experimentation.

Momentum heading into the second half

With Grok Imagine racing up the quality rankings and generating videos at a billion-plus monthly clip, xAI is turning what began as an add-on into one of its most visible consumer products. Combined with the company's fast-moving model releases and its deep compute footprint, the upgrade underscores how quickly xAI is closing the gap with, and in some benchmarks surpassing, far older names in generative media. For users, it means a free, built-in tool that keeps getting more capable with each passing week.