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  1. Home/
  2. Compare/
  3. Grok Imagine Image vs Imagen 4 Ultra
Updated Dec 2025

Grok Imagine Image vs Imagen 4 Ultra

Grok Imagine Image is the newer model, released after Imagen 4 Ultra.

Hyperrealistic Portrait

One prompt, one photorealistic portrait. Skin, eyes, light.

Loading the build
Grok Imagine Image
Loading the build
Imagen 4 Ultra

Which answer wins?

Price and specs

Grok Imagine Image and Imagen 4 Ultra compared across 17 shared prompts
SpecGrok Imagine ImageImagen 4 Ultra
ReleasedDec 2025May 2025

Common questions

What is the difference between Grok Imagine Image and Imagen 4 Ultra?

Grok Imagine Image is developed by xAI while Imagen 4 Ultra is developed by Google AI. You can compare their actual outputs across 17 challenges on Rival to see how they differ in practice.

Which is better, Grok Imagine Image or Imagen 4 Ultra?

It depends on your use case. Grok Imagine Image and Imagen 4 Ultra each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 17 challenges so you can judge which fits your needs best.

How can I compare Grok Imagine Image and Imagen 4 Ultra on Rival?

This page shows a side-by-side comparison of Grok Imagine Image and Imagen 4 Ultra across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

More comparisons

Against the newest arrivals

  • Grok Imagine Image vs Hy Image 3.5 PreviewLanded Oct 2026
  • Imagen 4 Ultra vs FLUX.3 ImageLanded Oct 2026
  • Grok Imagine Image vs Nano Banana 2.1Landed Oct 2026
  • Imagen 4 Ultra vs Recraft V4.1 FlashLanded Sep 2026
  • Grok Imagine Image vs GPT Image 2.5 SunburstLanded Sep 2026
  • Imagen 4 Ultra vs GPT Image 2.5 FlareLanded Sep 2026
  • Grok Imagine Image vs Nano Banana 2 LiteLanded Jun 2026
  • Imagen 4 Ultra vs Riverflow V2.5 FastLanded Jun 2026

Same lab, same size, long tail

  • Grok Imagine Image vs FLUX.3 ImageSame size
  • Grok Imagine Image vs Recraft V4.1 FlashSame size
  • Imagen 4 Ultra vs Nano Banana 2.1Same lab
  • Imagen 4 Ultra vs Nano Banana 2 LiteSame lab
  • Grok Imagine Image vs Recraft V4.1Same size
  • Grok Imagine Image vs Recraft V4.1 ProSame size
  • Grok Imagine Image vs Riverflow V2.5 FastSame size
  • Grok Imagine Image vs Riverflow V2.5 ProSame size

Model pages

  • Grok Imagine Image17 outputs, specs and price
  • Imagen 4 Ultra19 outputs, specs and price
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Rival
How it worksPrivacyTerms
Explore all of Rival

Explore

  • Compare models
  • All models
  • Image comparison
  • Audio comparison
  • Image generation
  • Best AI for...
  • Arena
  • API pricing
  • Challenges

Discover

  • SubjectiveBench
  • Default Index
  • Research
  • Research downloads
  • Rival Kits
  • Find your AI taste
  • UI Glow-Up
  • VoiceLock
  • Cost Cutter
  • Agent skills
  • Benchmarks vs Vibes
  • Brief
  • Jailbreak
  • Model updates
  • Provider status
  • AI creators

Connect

  • Methodology
  • Advertise
  • Partnerships
  • Privacy policy
  • Terms
  • RSS feed