Imagen 4 Fast vs 
Luma Photon Flash
Imagen 4 Fast is the newer model, released after Luma Photon Flash.
Hyperrealistic Portrait
One prompt, one photorealistic portrait. Skin, eyes, light.
Loading the build
Loading the build
Which answer wins?
Price and specs
Not enough votes to call it. On the specs, Imagen 4 Fast has the edge: newer, major provider backing.
| Spec | Imagen 4 Fast | Luma Photon Flash |
|---|---|---|
| Released | Jun 2025 | Mar 2025 |
Common questions
What is the difference between Imagen 4 Fast and Luma Photon Flash?
Imagen 4 Fast is developed by Google AI while Luma Photon Flash is developed by Luma. You can compare their actual outputs across 17 challenges on Rival to see how they differ in practice.
Which is better, Imagen 4 Fast or Luma Photon Flash?
It depends on your use case. Imagen 4 Fast and Luma Photon Flash 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 Imagen 4 Fast and Luma Photon Flash on Rival?
This page shows a side-by-side comparison of Imagen 4 Fast and Luma Photon Flash 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
- Imagen 4 Fast vs Hy Image 3.5 PreviewLanded Oct 2026
- Luma Photon Flash vs FLUX.3 ImageLanded Oct 2026
- Imagen 4 Fast vs Nano Banana 2.1Landed Oct 2026
- Luma Photon Flash vs Recraft V4.1 FlashLanded Sep 2026
- Imagen 4 Fast vs GPT Image 2.5 SunburstLanded Sep 2026
- Luma Photon Flash vs GPT Image 2.5 FlareLanded Sep 2026
- Imagen 4 Fast vs Nano Banana 2 LiteLanded Jun 2026
- Luma Photon Flash vs Riverflow V2.5 FastLanded Jun 2026
Same lab, same size, long tail
- Imagen 4 Fast vs Nano Banana 2Same lab
- Imagen 4 Fast vs FLUX.3 ImageSame size
- Luma Photon Flash vs Luma PhotonSame lab
- Luma Photon Flash vs Hy Image 3.5 PreviewSame size
- Imagen 4 Fast vs Recraft V4.1 FlashSame size
- Imagen 4 Fast vs Recraft V4.1 ProSame size
- Imagen 4 Fast vs Riverflow V2.5 FastSame size
- Imagen 4 Fast vs Riverflow V2.5 ProSame size