xAI Grok Image Generation API Guide: Aspect Ratio & b64_json

Harnessing xAI’s Grok Imagine API: Aspect Ratios, Base64 Payloads, and Image Generations

xAI’s Grok Imagine image generation ecosystem (housed under endpoints such as site:docs.x.ai/developers/model-capabilities/images/generation or equivalent API routes) has transformed how developers and automated pipelines embed high-performance text-to-image and image-editing capabilities into their applications. Powered by models like grok-imagine-image-2.0, the system offers precise control over spatial dimensions, rendering qualities, and payload delivery formats.

Core Request Structure

When interacting with the image generation route, requests are sent via a standard JSON payload. Below is an overview of the primary configuration parameters governing a generation task:

• model: Specifies the target model variant (