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Image model comparison · 2 models · Updated Nov 2, 2026

GPT Image 1.5 vs Grok Imagine Image

Preferred for text to image: GPT Image 1.5 · Preferred for image editing: GPT Image 1.5 · Newest: Grok Imagine Image. Quality scores are blind human-preference votes; specs and prices come from each lab’s listings.

  1. OpenAI

    GPT Image 1.5

    Released Nov 25, 2025Deprecated

    • Text to image
    • Image editing
    • Arena1,368
    • From—
    • Max size—
    Full specs Remove GPT Image 1.5

  2. xAI

    Grok Imagine Image

    Released Jan 28, 2026

    • Text to image
    • Image editing
    • Arena1,329
    • From$0.02/image
    • Max size2K
    Full specs Remove Grok Imagine Image

  3. Add a model

    Make it a three-way comparison.

01 — At a glance

Where they differ

Quality is the arena score from blind, side-by-side human votes. Price, length and resolution come from each lab’s own listings.

  • Preferred for text to imageGPT Image 1.5GPT Image 1.5 1,236 (#17) · Grok Imagine Image 1,169 (#25) — blind human votes
  • Preferred for image editingGPT Image 1.5GPT Image 1.5 1,368 (#19) · Grok Imagine Image 1,329 (#24) — blind human votes
  • NewestGrok Imagine ImageGPT Image 1.5 Nov 25, 2025 · Grok Imagine Image Jan 28, 2026
  • Widest inputsSame inputsGPT Image 1.5: Text prompts, Reference images · Grok Imagine Image: Text prompts, Reference images
  • Image editingBoth edit imagesTakes a reference image as input: GPT Image 1.5 yes · Grok Imagine Image yes
  • Self-hostingNo open weightsBoth are available only through APIs and apps
  • Most API hostsGPT Image 1.5GPT Image 1.5: 7 · Grok Imagine Image: 3
02 — Side by side

Every spec in one table

Dashes mean the data is not published.

GPT Image 1.5 vs Grok Imagine Image specifications side by side
SpecificationGPT Image 1.5OpenAIGrok Imagine ImagexAI
Quality (blind human votes)
Text to image arenaElo-style score · higher is better1,236 ±3#17 of 82 · 174,012 votes (best)1,169 ±3#25 of 82 · 286,515 votes
Image editing arenaElo-style score · higher is better1,368 ±3#19 of 61 · 684,650 votes (best)1,329 ±2#24 of 61 · 805,966 votes
Price
Starting price—$0.02/image 1K–2K
Extra charges—$0.002 per input image
How it is billed—Per image
Output
ProducesImagesImages
Resolutions—1K · 2K
Highest resolution—2K
Largest image—2K
Images per request—Up to 10
Inputs
Text promptsYesYes
Reference images (editing)YesYes
Max reference images—5
Access
WeightsProprietaryProprietary
API model IDgpt-image-1.5grok-imagine-image
API hosts7 (best)3
ReleasedNov 25, 2025Jan 28, 2026
03 — Questions

Which should you choose?

Which is better, GPT Image 1.5 or Grok Imagine Image?

For text to image, voters prefer GPT Image 1.5 (GPT Image 1.5 1,236 (#17) · Grok Imagine Image 1,169 (#25)). For image editing, voters prefer GPT Image 1.5 (GPT Image 1.5 1,368 (#19) · Grok Imagine Image 1,329 (#24)). Arena scores come from blind, side-by-side human votes on the same prompts; when the gap is inside both models’ error margins we call it a tie. Test your own prompts before you commit.

Which is cheaper?

Grok Imagine Image costs from $0.02/image (1K–2K). GPT Image 1.5 has no published per-image price. Prices are list rates and change often; check the lab before budgeting.

What is the difference between GPT Image 1.5 and Grok Imagine Image?

GPT Image 1.5 is an image model from OpenAI (Nov 25, 2025), taking text prompts and reference images and producing images. Grok Imagine Image is an image model from xAI (Jan 28, 2026), taking text prompts and reference images and producing images.

Which is newer?

GPT Image 1.5 Nov 25, 2025; Grok Imagine Image Jan 28, 2026.

Which can edit an existing image?

Takes a reference image as input: GPT Image 1.5 yes; Grok Imagine Image yes.

Can I run any of these on my own hardware?

No open weights. Both are available only through APIs and apps.

04 — Keep comparing

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