# Imagen vs OpenAI vs Grok: choosing an AI image model

By the GO AI Team · August 21, 2026

> **TL;DR:** The three image families in [GO AI Chat](https://goaichat.app/chat) have temperaments, not a ranking. **Imagen** for clean commercial photorealism. **OpenAI** for legible text and multi-constraint prompts. **Grok** for looser, more adventurous style. Qualitative, from daily use, as of August 2026.

## By job

| Job | Start with | Because |
|---|---|---|
| Commercial photorealism | Imagen | Clean light and materials; least "AI sheen" |
| Legible text in the image | OpenAI | The category's weak spot, handled best here |
| Prompt with several constraints | OpenAI | Follows literal arrangements more reliably |
| Illustration, stylised work | Grok | Looser, commits to a look |
| Something strange | Grok | Less averaged-out |
| Restyling a photo you own | Restyle, not generation | Keeps your composition |

## What moves results more than model choice

Prompt structure, across all three:

1. **Subject** in concrete nouns — "a ceramic pour-over dripper," not "coffee stuff."
2. **The shot** — framing, angle, lens: "three-quarter view, 50mm, shallow depth of field."
3. **The light** — highest-leverage phrase in any image prompt. "Soft window light from the left, late afternoon."
4. **One style**, named. Stacking adjectives averages them into mush.

Close but wrong in one respect? Change only that clause.

## Restyling is underrated

Generation invents everything including your subject. Restyling starts from your photo — composition, pose and person are fixed, so the model only picks the look. GO AI Chat ships 24 restyle styles plus a Studio editor for colour, light, detail, and effects.

## Still bad at (all three)

- Hands and fine manipulation
- Exact counts — "five candles" is a suggestion
- Consistent characters across images
- Real logos, people, and places — check rights before publishing

## How to choose

Ask what would make the image fail. "It looks fake" → Imagen. "The sign is garbled" → OpenAI. "It's boring" → Grok. Subject already photographed → restyle, don't generate.

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We build [GO AI Chat](https://goaichat.app/chat) — image generation through OpenAI, Imagen, and Grok in one iOS app.

More: [GO AI Blog](https://goaichat.app/blog) · [support@goaichats.com](mailto:support@goaichats.com)