Based on 6 capability dimensions
Stable Diffusion Best For
Image and multimodal creation tasks
Avoid if: You only need text-first software development
Grok Best For
Deep synthesis and research workflows
Avoid if: You primarily need deterministic coding automation
3 versions
Multimodal Diffusion Transformer architecture. Best text in images of any SD model. Improved composition and detail.
Higher resolution images. Better image composition and faces. Two stage model pipeline for better quality.
Open source image generation released publicly. Runs locally on consumer hardware. Sparked the open source AI art revolution.
6 versions
xAI announced the Grok Imagine API, offering state-of-the-art video generation across quality, cost, and latency. This represents a new API capability for video generation built on the Grok platform.
Grok 4.1 is now available to all users on grok.com, X, and the iOS and Android apps. It is rolling out immediately in Auto mode and can be selected explicitly as 'Grok 4.1' in the model picker. A fast variant, Grok 4.1 Fast, was also introduced along with Agent Tools API for next-generation tool-calling agents.
Grok 4 is described as the most intelligent model in the world, featuring native tool use and real-time search integration. It is available to SuperGrok and Premium+ subscribers as well as through the xAI API. A new SuperGrok Heavy tier was also introduced with access to Grok 4 Heavy, the most powerful version of Grok 4.
Major capability upgrade. Image generation integrated. Beats Claude 3 Opus and GPT-4o on several benchmarks.
Significant reasoning improvements. Context window expanded to 128K tokens. Better at math and coding tasks.