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

FLUX.2 [pro] vs GPT Image 1.5

Preferred for text to image: GPT Image 1.5 · Preferred for image editing: GPT Image 1.5 · Self-hosting: No open weights. Quality scores are blind human-preference votes; specs and prices come from each lab’s listings.

  1. Black Forest Labs

    FLUX.2 [pro]

    Released Nov 25, 2025

    • Text to image
    • Image editing
    • Arena1,247
    • From$0.03/image
    • Max size—
    Full specs Remove FLUX.2 [pro]

  2. 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

  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 1.5FLUX.2 [pro] 1,153 (#32) · GPT Image 1.5 1,236 (#17) — blind human votes
  • Preferred for image editingGPT Image 1.5FLUX.2 [pro] 1,247 (#38) · GPT Image 1.5 1,368 (#19) — blind human votes
  • NewestSame release dateFLUX.2 [pro] Nov 25, 2025 · GPT Image 1.5 Nov 25, 2025
  • Widest inputsSame inputsFLUX.2 [pro]: Text prompts, Reference images · GPT Image 1.5: Text prompts, Reference images
  • Image editingBoth edit imagesTakes a reference image as input: FLUX.2 [pro] yes · GPT Image 1.5 yes
  • Self-hostingNo open weightsBoth are available only through APIs and apps
  • Most API hostsGPT Image 1.5FLUX.2 [pro]: 1 · GPT Image 1.5: 7
02 — Side by side

Every spec in one table

Dashes mean the data is not published.

FLUX.2 [pro] vs GPT Image 1.5 specifications side by side
SpecificationFLUX.2 [pro]Black Forest LabsGPT Image 1.5OpenAI
Quality (blind human votes)
Text to image arenaElo-style score · higher is better1,153 ±3#32 of 82 · 223,179 votes1,236 ±3#17 of 82 · 174,012 votes (best)
Image editing arenaElo-style score · higher is better1,247 ±3#38 of 61 · 673,136 votes1,368 ±3#19 of 61 · 684,650 votes (best)
Price
Starting price$0.03/image 1 MP—
How it is billedBilled per megapixel; editing costs more.—
Output
ProducesImagesImages
Images per requestUp to 1—
Inputs
Text promptsYesYes
Reference images (editing)YesYes
Max reference images8—
Access
WeightsProprietaryProprietary
API model ID—gpt-image-1.5
API hosts17 (best)
ReleasedNov 25, 2025Nov 25, 2025
03 — Questions

Which should you choose?

Which is better, FLUX.2 [pro] or GPT Image 1.5?

For text to image, voters prefer GPT Image 1.5 (FLUX.2 [pro] 1,153 (#32) · GPT Image 1.5 1,236 (#17)). For image editing, voters prefer GPT Image 1.5 (FLUX.2 [pro] 1,247 (#38) · GPT Image 1.5 1,368 (#19)). 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?

FLUX.2 [pro] costs from $0.03/image (1 MP). 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 FLUX.2 [pro] and GPT Image 1.5?

FLUX.2 [pro] is an image model from Black Forest Labs (Nov 25, 2025), taking text prompts and reference images and producing images. GPT Image 1.5 is an image model from OpenAI (Nov 25, 2025), taking text prompts and reference images and producing images.

Which is newer?

FLUX.2 [pro] Nov 25, 2025; GPT Image 1.5 Nov 25, 2025.

Which can edit an existing image?

Takes a reference image as input: FLUX.2 [pro] yes; GPT Image 1.5 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

Related comparisons