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

FLUX1.1 [pro] Ultra vs Imagen 3 Fast

Newest: FLUX1.1 [pro] Ultra · Image editing: Neither edits images · Self-hosting: No open weights. Not enough arena votes yet for a quality score, so this is a spec comparison.

  1. Black Forest Labs

    FLUX1.1 [pro] Ultra

    Released Nov 1, 2024

    • Text to image
    • Arena—
    • From—
    • Max size—
    Full specs Remove FLUX1.1 [pro] Ultra

  2. Google

    Imagen 3 Fast

    Released Oct 17, 2024

    • Text to image
    • Arena—
    • From$0.02/image
    • Max size—
    Full specs Remove Imagen 3 Fast

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    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.

  • NewestFLUX1.1 [pro] UltraFLUX1.1 [pro] Ultra Nov 1, 2024 · Imagen 3 Fast Oct 17, 2024
  • Widest inputsSame inputsFLUX1.1 [pro] Ultra: Text prompts · Imagen 3 Fast: Text prompts
  • Image editingNeither edits imagesTakes a reference image as input: FLUX1.1 [pro] Ultra no · Imagen 3 Fast no
  • Self-hostingNo open weightsBoth are available only through APIs and apps
  • Most API hostsSame reachFLUX1.1 [pro] Ultra: 1 · Imagen 3 Fast: 1
02 — Side by side

Every spec in one table

Dashes mean the data is not published.

FLUX1.1 [pro] Ultra vs Imagen 3 Fast specifications side by side
SpecificationFLUX1.1 [pro] UltraBlack Forest LabsImagen 3 FastGoogle
Price
Starting price—$0.02/image standard
How it is billed—Per image
Output
ProducesImagesImages
Inputs
Text promptsYesYes
Reference images (editing)NoNo
Access
WeightsProprietaryProprietary
API hosts11
ReleasedNov 1, 2024Oct 17, 2024
03 — Questions

Which should you choose?

Which is better, FLUX1.1 [pro] Ultra or Imagen 3 Fast?

Neither model has enough arena votes for a reliable quality score yet, so this page compares specs only. Run the same three or four prompts through each and judge the results.

Which is cheaper?

Imagen 3 Fast costs from $0.02/image (standard). FLUX1.1 [pro] Ultra has no published per-image price. Prices are list rates and change often; check the lab before budgeting.

What is the difference between FLUX1.1 [pro] Ultra and Imagen 3 Fast?

FLUX1.1 [pro] Ultra is an image model from Black Forest Labs (Nov 1, 2024), taking text prompts and producing images. Imagen 3 Fast is an image model from Google (Oct 17, 2024), taking text prompts and producing images.

Which is newer?

FLUX1.1 [pro] Ultra Nov 1, 2024; Imagen 3 Fast Oct 17, 2024.

Which can edit an existing image?

Takes a reference image as input: FLUX1.1 [pro] Ultra no; Imagen 3 Fast no.

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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