Which should you pick?
GPT Image 1.5 and Grok Imagine Image 2.0 start at the same 2 credits for a complete generation.
At their most expensive settings the gap widens: Grok Imagine Image 2.0 tops out at 3 credits a job versus 2, driven by output resolution.
GPT Image 1.5 supports up to 4K, the higher of the two.
Grok Imagine Image 2.0 holds the stronger leaderboard position (#5 in text to image against #9 in text to image). Those are two different leaderboards unless the category matches — Versely ranks each capability separately.
Grok Imagine Image 2.0 supports more aspect ratios (13: 2:1, 20:9, 19.5:9, 16:9, 4:3, 3:2, 1:1, 2:3, 3:4, 9:16, 9:19.5, 9:20, 1:2), 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 2.0
2-3 credits
It bills a flat rate that changes with output resolution, and the price moves with output resolution.
- SD/HD2 credits
- 4K3 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 2.0 |
|---|---|---|
| Provider | OpenAI | Grok |
| Cost per job | 2 credits | 2-3 credits |
| Billing | a flat rate per generation | a flat rate that changes with output resolution |
| Max resolution | 4K | 2K |
| Aspect ratios | 1:1, 2:3, 3:2 | 2:1, 20:9, 19.5:9, 16:9, 4:3, 3:2, 1:1, 2:3, 3:4, 9:16, 9:19.5, 9:20, 1:2 |
| 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 | #9 in text to image | #5 in text to image |
| Released | Dec 16, 2025 | Aug 24, 2026 |
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 2.0
wide aspect range, 2k, batch
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
- Text to image#9
- Edit image#12
Grok Imagine Image 2.0
- Text to image#5
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 2.0 spec sheet →
xAI Grok Imagine 2.0 text-to-image. Thirteen aspect ratios from 2:1 through 1:2, 1K or 2K output, and up to four images per request.
More comparisons
Frequently asked questions
Which is cheaper, GPT Image 1.5 or Grok Imagine Image 2.0?+
Neither — both start at 2 credits for a complete generation on Versely.
What can GPT Image 1.5 do that Grok Imagine Image 2.0 can't, or vice versa?+
Only GPT Image 1.5 lists image to image, edit image, gpt, ai powered, versatile. Only Grok Imagine Image 2.0 lists wide aspect range, 2k, batch. Both list text to image.
How do GPT Image 1.5 and Grok Imagine Image 2.0 bill?+
GPT Image 1.5 bills a flat rate per generation. Grok Imagine Image 2.0 bills a flat rate that changes with output resolution, and its price moves with output resolution. Both are charged in Versely credits.
Which has higher output resolution, GPT Image 1.5 or Grok Imagine Image 2.0?+
GPT Image 1.5 supports higher output (4K against 2K).
Which ranks higher, GPT Image 1.5 or Grok Imagine Image 2.0?+
GPT Image 1.5 sits at #9 in text to image and Grok Imagine Image 2.0 at #5 in text to 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
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