Hy Image 3.5 Preview vs 
Stable Diffusion 3.5 Medium
Hy Image 3.5 Preview is the newer model, released after Stable Diffusion 3.5 Medium.
Hyperrealistic Portrait
One prompt, one photorealistic portrait. Skin, eyes, light.
Loading the build
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Which answer wins?
Price and specs
| Spec | Hy Image 3.5 Preview | Stable Diffusion 3.5 Medium |
|---|---|---|
| Weights | — | Open |
| Free API (OpenRouter) | No | — |
| Released | Oct 2026 | Oct 2024 |
Where to run it
Hy Image 3.5 Preview1 host
Stable Diffusion 3.5 Medium
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 10 Oct 2026.
Common questions
What is the difference between Hy Image 3.5 Preview and Stable Diffusion 3.5 Medium?
Hy Image 3.5 Preview is developed by Tencent while Stable Diffusion 3.5 Medium is developed by Stability AI. You can compare their actual outputs across 17 challenges on Rival to see how they differ in practice.
Which is better, Hy Image 3.5 Preview or Stable Diffusion 3.5 Medium?
It depends on your use case. Hy Image 3.5 Preview and Stable Diffusion 3.5 Medium 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 Hy Image 3.5 Preview and Stable Diffusion 3.5 Medium on Rival?
This page shows a side-by-side comparison of Hy Image 3.5 Preview and Stable Diffusion 3.5 Medium 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
- Hy Image 3.5 Preview vs FLUX.3 ImageLanded Oct 2026
- Stable Diffusion 3.5 Medium vs Nano Banana 2.1Landed Oct 2026
- Hy Image 3.5 Preview vs Recraft V4.1 FlashLanded Sep 2026
- Stable Diffusion 3.5 Medium vs GPT Image 2.5 SunburstLanded Sep 2026
- Hy Image 3.5 Preview vs GPT Image 2.5 FlareLanded Sep 2026
- Stable Diffusion 3.5 Medium vs Nano Banana 2 LiteLanded Jun 2026
- Hy Image 3.5 Preview vs Riverflow V2.5 FastLanded Jun 2026
- Stable Diffusion 3.5 Medium vs Riverflow V2.5 ProLanded Jun 2026
Same lab, same size, long tail
- Hy Image 3.5 Preview vs Hunyuan Image 3Same lab
- Hy Image 3.5 Preview vs Nano Banana 2.1Same size
- Stable Diffusion 3.5 Medium vs FLUX.3 ImageSame size
- Stable Diffusion 3.5 Medium vs Recraft V4.1 FlashSame size
- Hy Image 3.5 Preview vs Z Image TurboSame size
- Hy Image 3.5 Preview vs DALL-E 3Same size
- Hy Image 3.5 Preview vs FiboSame size
- Hy Image 3.5 Preview vs FLUX 2 DevSame size
