xAI releases the Aurora image model
xAI released Aurora, an in-house autoregressive mixture-of-experts image model trained on interleaved text and image data, through Grok on X.
What happened
Event details
On December 9, 2024, xAI released Aurora, an image-generation model integrated into Grok on X. xAI described Aurora as an autoregressive mixture-of-experts network trained to predict the next token over interleaved text and image data, using billions of examples from the internet. The company demonstrated photorealistic images, rendered text and logos, real-world entities, and portraits. Aurora also natively accepts images for reference-guided generation and editing. The initial rollout covered selected countries, with a wider rollout planned within a week. xAI did not disclose the model's parameter count.
Assessment
Why it matters
Aurora marked xAI's shift from relying on an external image model to operating an in-house generator, bringing text generation, reference-image input, and editing into Grok. Its distribution through X gave the model a large consumer surface and laid the groundwork for the later Grok Imagine image and video products.
Availability
Access notes
Initially available through Grok on X in selected countries; xAI said it would expand access to all users within a week. Image editing was still marked as coming soon at launch.