Which should you pick?
GPT Image 1.5 and Grok Imagine Image start at the same 2 credits for a complete generation.
GPT Image 1.5 holds the stronger leaderboard position (#4 in text to image against #15 in edit image). Those are two different leaderboards unless the category matches — Versely ranks each capability separately.
Grok Imagine Image supports more aspect ratios (13: 20:9, 19.5:9, 2:1, 16:9, 3:2, 4:3, 1:1, 3:4, 2:3, 9:16, 1:2, 9:19.5, 9:20), giving it more format flexibility.
What a job costs
GPT Image 1.5
2 credits
It bills a flat rate per generation.
- Price2 credits
Grok Imagine Image
2 credits
It bills a flat rate per generation.
- Price2 credits
All figures are Versely credits. Your plan's credit allowance is on the pricing page.
Spec comparison
| Spec | GPT Image 1.5 | Grok Imagine Image |
|---|---|---|
| Provider | OpenAI | Grok |
| Cost per job | 2 credits | 2 credits |
| Billing | a flat rate per generation | a flat rate per generation |
| Max resolution | 4K | 4K |
| Aspect ratios | 1:1, 2:3, 3:2 | 20:9, 19.5:9, 2:1, 16:9, 3:2, 4:3, 1:1, 3:4, 2:3, 9:16, 1:2, 9:19.5, 9:20 |
| Durations | — | — |
| Frame rates | — | — |
| Qualities | SD, HD, 4K | 1K, 2K |
| Requires starting image | No | No |
| Accepts video input | No | No |
| Reference images | Up to 16 | — |
| Leaderboard | #4 in text to image | #15 in edit image |
| Released | Dec 16, 2025 | Jul 28, 2025 |
What each one does that the other doesn't
Only GPT Image 1.5
image to image, edit image, gpt, ai powered, versatile
Only Grok Imagine Image
creative, innovative, smart
Both list: text to image.
Leaderboard positions
Versely ranks each capability on its own leaderboard, so a position is only comparable between two models within the same row.
GPT Image 1.5
- Edit image#4
- Text to image#4
Grok Imagine Image
- Edit image#15
- Text to image#20
Full GPT Image 1.5 spec sheet →
OpenAI's GPT Image 1.5 — conversational prompt understanding across text-to-image, image-to-image and edits. Strong at following long, specific instructions and rendering legible in-image text.
Full Grok Imagine Image spec sheet →
xAI's Grok Imagine for still images — fast, loosely-styled generations with a distinctive creative bent. A strong ideation model when you want unexpected takes rather than strict prompt adherence.
Frequently asked questions
Which is cheaper, GPT Image 1.5 or Grok Imagine Image?+
Neither — both start at 2 credits for a complete generation on Versely.
What can GPT Image 1.5 do that Grok Imagine Image can't, or vice versa?+
Only GPT Image 1.5 lists image to image, edit image, gpt, ai powered, versatile. Only Grok Imagine Image lists creative, innovative, smart. Both list text to image.
How do GPT Image 1.5 and Grok Imagine Image bill?+
GPT Image 1.5 bills a flat rate per generation. Grok Imagine Image bills a flat rate per generation. Both are charged in Versely credits.
Which ranks higher, GPT Image 1.5 or Grok Imagine Image?+
GPT Image 1.5 sits at #4 in text to image and Grok Imagine Image at #15 in edit image on Versely's live model rankings. Versely ranks each capability on its own leaderboard, so those positions are only a direct comparison when the category is the same.
Try both inside Versely
The all-in-one AI studio for creators. 60+ models for video, image, voice, music and lipsync in a single app.