GPT Image 2.5 Sunburst vs 
Luma Photon Flash
GPT Image 2.5 Sunburst is the newer model, released after Luma Photon Flash.
Hyperrealistic Portrait
One prompt, one photorealistic portrait. Skin, eyes, light.
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Which answer wins?
Price and specs
Not enough votes to call it. On the specs, GPT Image 2.5 Sunburst has the edge: newer, major provider backing.
| Spec | GPT Image 2.5 Sunburst | Luma Photon Flash |
|---|---|---|
| Input price | $5/M tokens | — |
| Output price | $30/M tokens | — |
| Weights | Closed | — |
| Free API (OpenRouter) | No | — |
| Released | Sep 2026 | Mar 2025 |
| 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
Luma Photon Flash
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 12 Oct 2026.
Common questions
What is the difference between GPT Image 2.5 Sunburst and Luma Photon Flash?
GPT Image 2.5 Sunburst is developed by OpenAI 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, GPT Image 2.5 Sunburst or Luma Photon Flash?
It depends on your use case. GPT Image 2.5 Sunburst 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 GPT Image 2.5 Sunburst and Luma Photon Flash on Rival?
This page shows a side-by-side comparison of GPT Image 2.5 Sunburst 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
- GPT Image 2.5 Sunburst vs Hy Image 3.5 PreviewLanded Oct 2026
- Luma Photon Flash vs FLUX.3 ImageLanded Oct 2026
- GPT Image 2.5 Sunburst vs Nano Banana 2.1Landed Oct 2026
- Luma Photon Flash vs Recraft V4.1 FlashLanded Sep 2026
- GPT Image 2.5 Sunburst vs GPT Image 2.5 FlareLanded Sep 2026
- Luma Photon Flash vs Nano Banana 2 LiteLanded Jun 2026
- GPT Image 2.5 Sunburst vs Riverflow V2.5 FastLanded Jun 2026
- Luma Photon Flash vs Riverflow V2.5 ProLanded Jun 2026
Same lab, same size, long tail
- GPT Image 2.5 Sunburst vs GPT Image 2Same lab
- GPT Image 2.5 Sunburst vs GPT Image 1.5Same lab
- Luma Photon Flash vs Luma PhotonSame lab
- Luma Photon Flash vs Hy Image 3.5 PreviewSame size
- GPT Image 2.5 Sunburst vs FLUX Kontext ProSame size
- GPT Image 2.5 Sunburst vs FLUX ProSame size
- GPT Image 2.5 Sunburst vs FLUX SchnellSame size
- GPT Image 2.5 Sunburst vs Gemini 2.5 Flash ImageSame size
