GPT Image 1.5 (High) vs 
Imagen 3
GPT Image 1.5 (High) is the newer model, released after Imagen 3.
Hyperrealistic Portrait
One prompt, one photorealistic portrait. Skin, eyes, light.
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Which answer wins?
Price and specs
| Spec | GPT Image 1.5 (High) | Imagen 3 |
|---|---|---|
| Parameters | Not disclosed | Not disclosed |
| Released | Dec 2025 | Feb 2025 |
Common questions
What is the difference between GPT Image 1.5 (High) and Imagen 3?
GPT Image 1.5 (High) is developed by OpenAI while Imagen 3 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, GPT Image 1.5 (High) or Imagen 3?
It depends on your use case. GPT Image 1.5 (High) and Imagen 3 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 GPT Image 1.5 (High) and Imagen 3 on Rival?
This page shows a side-by-side comparison of GPT Image 1.5 (High) and Imagen 3 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
- GPT Image 1.5 (High) vs Nano Banana 2.1Landed Oct 2026
- Imagen 3 vs Recraft V4.1 FlashLanded Sep 2026
- GPT Image 1.5 (High) vs GPT Image 2.5 SunburstLanded Sep 2026
- Imagen 3 vs GPT Image 2.5 FlareLanded Sep 2026
- GPT Image 1.5 (High) vs Nano Banana 2 LiteLanded Jun 2026
- Imagen 3 vs Riverflow V2.5 FastLanded Jun 2026
- GPT Image 1.5 (High) vs Riverflow V2.5 ProLanded Jun 2026
- Imagen 3 vs Recraft V4.1Landed May 2026
Same lab, same size, long tail
- GPT Image 1.5 (High) vs GPT Image 2.5 FlareSame lab
- GPT Image 1.5 (High) vs GPT Image 2Same lab
- Imagen 3 vs Nano Banana 2.1Same lab
- Imagen 3 vs Nano Banana 2 LiteSame lab
- GPT Image 1.5 (High) vs Grok Imagine ImageSame size
- GPT Image 1.5 (High) vs Hunyuan Image 3Same size
- GPT Image 1.5 (High) vs Ideogram v3 BalancedSame size
- GPT Image 1.5 (High) vs Ideogram v3 QualitySame size
