GPT Image 2.5 Sunburst vs Luma Uni-1 Max
Two premium stills models at similar prices. Sunburst at 20 credits with 16 edit references versus Luma Uni-1 Max at 21 credits with nine.
GPT Image 2.5 Sunburst from OpenAI and Luma Uni-1 Max from Luma AI represent two different approaches to AI image generation. GPT Image 2.5 generation and editing with explicit sizes or automatic source sizing. On the other side, luma's highest-fidelity Uni-1 tier for detailed hero images, strong prompt adherence, and reference-guided editing.
At 20 credits, GPT Image 2.5 Sunburst costs 1 credits less than Luma Uni-1 Max (21 credits). The question is whether the extra cost of Luma Uni-1 Max translates into meaningfully better results for your use case. For hero stills, precision editing, photorealism, and production text rendering, GPT Image 2.5 Sunburst is hard to beat at its price point. But if you need hero stills, detailed concept art, character references, and precise multi-image edits, Luma Uni-1 Max may justify the premium.
Updated October 2026
GPT Image 2.5 Sunburst (20 credits) offers better value for everyday use, especially for hero stills. Luma Uni-1 Max (21 credits) is worth the premium when you need hero stills. Both are available on Melies — try each with a test prompt to see which fits your style.
GPT Image 2.5 Sunburst vs Luma Uni-1 Max: How They Compare
 GPT Image 2.5 Sunburst |  Luma Uni-1 Max | |
|---|---|---|
| Provider | OpenAI | Luma AI |
| Released | Sep 2026 | Jun 2026 |
| Cost | 201K/302K | 21 |
| Speed | Medium | Medium |
| Reference images | Up to 16 | Up to 9 |
| Editing | ||
| WebP output |
GPT Image 2.5 Sunburst vs Luma Uni-1 Max: Cost Comparison
GPT Image 2.5 Sunburst is 5% cheaper than Luma Uni-1 Max. Here's how credits add up at scale.
| Volume | GPT Image 2.5 Sunburst | Luma Uni-1 Max |
|---|---|---|
| 10 images | 200 | 210 |
| 50 images | 1,000 | 1,050 |
| 100 images | 2,000 | 2,100 |
Strengths & Weaknesses
GPT Image 2.5 Sunburst
- + More affordable (20 vs 21 credits)
- + Hero stills
- + Supports 16 reference images
- + WebP output for smaller file sizes
- + More resolution options
- - Higher price point relative to speed tier
Luma Uni-1 Max
- + Hero stills
- + Highest-fidelity Uni-1 generation tier
- + One source image plus up to eight edit references
- + Nine aspect ratios from 3:1 to 1:3
- + PNG and JPEG output
- - More expensive (21 vs 20 credits)
- - No WebP output
GPT Image 2.5 Sunburst vs Luma Uni-1 Max: Which to Pick?
On a tight budget
At 20 credits per image, GPT Image 2.5 Sunburst gives you more generations for your plan. Good enough quality for most everyday use.
Maximum quality matters
Luma Uni-1 Max is worth the extra credits when the output needs to be perfect — portfolio pieces, client work, or final deliverables.
Character or style consistency
GPT Image 2.5 Sunburst supports 16 reference images to keep subjects, styles, and characters consistent across generations.
GPT Image 2.5 Sunburst vs Luma Uni-1 Max: FAQ
Practical answers before you start creating.
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