GPT Image 2.5 Sunburst vs 
Hy Image 3.5 Preview
Hy Image 3.5 Preview is the newer model, released after GPT Image 2.5 Sunburst.
Hyperrealistic Portrait
One prompt, one photorealistic portrait. Skin, eyes, light.
Loading the build
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Which answer wins?
Price and specs
| Spec | GPT Image 2.5 Sunburst | Hy Image 3.5 Preview |
|---|---|---|
| Input price | $5/M tokens | — |
| Output price | $30/M tokens | — |
| Weights | Closed | — |
| Free API (OpenRouter) | No | No |
| Released | Sep 2026 | Oct 2026 |
| At 10M a month | $50.00 | not listed |
Input tokens at list price. No caching, no batch discount.
Where to run it
GPT Image 2.5 Sunburst1 host
Hy Image 3.5 Preview1 host
Per million tokens. Prices and uptime via OpenRouter, checked 10 Oct 2026.
Common questions
What is the difference between GPT Image 2.5 Sunburst and Hy Image 3.5 Preview?
GPT Image 2.5 Sunburst is developed by OpenAI while Hy Image 3.5 Preview is developed by Tencent. You can compare their actual outputs across 19 challenges on Rival to see how they differ in practice.
Which is better, GPT Image 2.5 Sunburst or Hy Image 3.5 Preview?
It depends on your use case. GPT Image 2.5 Sunburst and Hy Image 3.5 Preview each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 19 challenges so you can judge which fits your needs best.
How can I compare GPT Image 2.5 Sunburst and Hy Image 3.5 Preview on Rival?
This page shows a side-by-side comparison of GPT Image 2.5 Sunburst and Hy Image 3.5 Preview 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 2.5 Sunburst vs FLUX.3 ImageLanded Oct 2026
- Hy Image 3.5 Preview vs Nano Banana 2.1Landed Oct 2026
- GPT Image 2.5 Sunburst vs Recraft V4.1 FlashLanded Sep 2026
- Hy Image 3.5 Preview vs GPT Image 2.5 FlareLanded Sep 2026
- GPT Image 2.5 Sunburst vs Nano Banana 2 LiteLanded Jun 2026
- Hy Image 3.5 Preview vs Riverflow V2.5 FastLanded Jun 2026
- GPT Image 2.5 Sunburst vs Riverflow V2.5 ProLanded Jun 2026
- Hy Image 3.5 Preview vs Recraft V4.1Landed May 2026
Same lab, same size, long tail
- GPT Image 2.5 Sunburst vs GPT Image 2.5 FlareSame lab
- GPT Image 2.5 Sunburst vs GPT Image 2Same lab
- Hy Image 3.5 Preview vs Hunyuan Image 3Same lab
- Hy Image 3.5 Preview vs FLUX.3 ImageSame size
- Hy Image 3.5 Preview vs FLUX 2 FlexSame size
- Hy Image 3.5 Preview vs FLUX 2 MaxSame size
- Hy Image 3.5 Preview vs FLUX 2 ProSame size
- Hy Image 3.5 Preview vs FLUX Kontext MaxSame size