Imagine Video 1.5 with References

Grok's video model can now take image and voice references, generate video from text alone, and output native 1080p.

Image and voice references carry a look and a voice into new generations
Text-to-video works with no starting image, pairing image generation with image-to-video underneath
Native 1080p is supported for both text-to-video and image-to-video
Text-to-video and 1080p are generally available on grok.com/imagine, iOS, and Android
References started in the US for SuperGrok Heavy and SuperGrok Plus, rolling out to all tiers over the following days