GPT vs Gemini vs Grok Images: Same-Prompt Examples

Compare the workflow before the artwork

Decide whether the task needs an exact image size, a reference picture or a selectable quality setting. Those controls are different across the models. Matching a prompt is useful, but matching a label such as 1K is not enough to make every setting equivalent.

Method and scope of the examples

On November 5, 2026, we generated one picture each using GPT Image 2, Gemini 3.1 Flash Image and Grok Imagine Image Lite with the same English prompt. GPT used a 1K target and draft quality; Gemini used a 1K target and automatic quality; Grok Lite used automatic dimensions and quality. WebP previews below are derived from those outputs.

Targets describe the requested settings. Check actual image dimensions after generation. Grok Lite also chooses its own aspect ratio.

Observed output dimensions

GPT and Gemini each returned a 1024 × 1024 PNG in this example. Grok Lite returned 784 × 1168 pixels. Since Lite uses automatic dimensions and ratio, this example does not demonstrate support for exact square output. A single prompt and one output per model cannot establish a quality ranking or verify every resolution and editing option.

Try the same idea for your own project

Reuse the supplied prompt, select a model and inspect the result at its actual dimensions. Save the version you prefer. If continuity matters, use supported reference editing; if exact typography or layout matters, complete the final composition in a design tool.