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

Lucid Realism vs Imagen 4 Ultra

Newest: Lucid Realism · 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. Leonardo.Ai

    Lucid Realism

    Released Jun 1, 2025

    • Text to image
    • Arena—
    • From—
    • Max size—
    Full specs Remove Lucid Realism

  2. Google

    Imagen 4 Ultra

    Released May 24, 2025

    • Text to image
    • Arena1,146
    • From$0.06/image
    • Max size—
    Full specs Remove Imagen 4 Ultra

  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.

  • NewestLucid RealismLucid Realism Jun 1, 2025 · Imagen 4 Ultra May 24, 2025
  • Widest inputsSame inputsLucid Realism: Text prompts · Imagen 4 Ultra: Text prompts
  • Image editingNeither edits imagesTakes a reference image as input: Lucid Realism no · Imagen 4 Ultra no
  • Self-hostingNo open weightsBoth are available only through APIs and apps
  • Most API hostsSame reachLucid Realism: 1 · Imagen 4 Ultra: 1
02 — Side by side

Every spec in one table

Dashes mean the data is not published.

Lucid Realism vs Imagen 4 Ultra specifications side by side
SpecificationLucid RealismLeonardo.AiImagen 4 UltraGoogle
Quality (blind human votes)
Text to image arenaElo-style score · higher is better—1,146 ±4#37 of 82 · 388,723 votes
Price
Starting price—$0.06/image standard
How it is billed—Per image
Output
ProducesImagesImages
Inputs
Text promptsYesYes
Reference images (editing)NoNo
Access
WeightsProprietaryProprietary
API hosts11
ReleasedJun 1, 2025May 24, 2025
03 — Questions

Which should you choose?

Which is better, Lucid Realism or Imagen 4 Ultra?

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 4 Ultra costs from $0.06/image (standard). Lucid Realism has no published per-image price. Prices are list rates and change often; check the lab before budgeting.

What is the difference between Lucid Realism and Imagen 4 Ultra?

Lucid Realism is an image model from Leonardo.Ai (Jun 1, 2025), taking text prompts and producing images. Imagen 4 Ultra is an image model from Google (May 24, 2025), taking text prompts and producing images.

Which is newer?

Lucid Realism Jun 1, 2025; Imagen 4 Ultra May 24, 2025.

Which can edit an existing image?

Takes a reference image as input: Lucid Realism no; Imagen 4 Ultra 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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