Imagen 4 Ultra vs Imagen 4 Fast
Google's premium Imagen 4 vs the budget variant. Ultra delivers richer detail at 8 credits vs Fast's 5 credits.
Imagen 4 Ultra and Imagen 4 Fast are both made by Google, but they serve different purposes. Google's highest quality image model with enhanced detail, richer lighting, and fewer artifacts. Meanwhile, google's fast image model with high-quality generation at ultra-low cost. Choosing between them comes down to what you prioritize: Hero images, or Fast iteration.
At 5 credits, Imagen 4 Fast costs 3 credits less than Imagen 4 Ultra (8 credits). The question is whether the extra cost of Imagen 4 Ultra translates into meaningfully better results for your use case. For fast iteration, budget-friendly generation, quick high-quality drafts, Imagen 4 Fast is hard to beat at its price point. But if you need hero images, production-quality output, high-fidelity generation, Imagen 4 Ultra may justify the premium.
Updated May 2026
Imagen 4 Fast (5 credits) offers better value for everyday use, especially for fast iteration. Imagen 4 Ultra (8 credits) is worth the premium when you need hero images. Both are available on Melies — try each with a test prompt to see which fits your style.
Imagen 4 Ultra vs Imagen 4 Fast: How They Compare
 Imagen 4 Ultra | Imagen 4 Fast | |
|---|---|---|
| Provider | ||
| Released | Mar 2026 | Mar 2026 |
| Cost | 8 | 5 |
| Speed | Medium | Fastest |
| Reference images | ||
| Editing |
Imagen 4 Ultra vs Imagen 4 Fast: Cost Comparison
Imagen 4 Fast is 38% cheaper than Imagen 4 Ultra. Here's how credits add up at scale.
| Volume | Imagen 4 Ultra | Imagen 4 Fast |
|---|---|---|
| 10 images | 80 | 50 |
| 50 images | 400 | 250 |
| 100 images | 800 | 500 |
Strengths & Weaknesses
Imagen 4 Ultra
- + Hero images
- + Highest quality in the Imagen 4 family
- + Enhanced detail and richer lighting
- + 9 aspect ratios including ultra-wide
- + Production-quality output for hero images
- - More expensive (8 vs 5 credits)
Imagen 4 Fast
- + More affordable (5 vs 8 credits)
- + Faster generation speed
- + Fast iteration
- + Ultra-low cost (5 credits)
- + Sub-second generation speed
- - Higher price point relative to speed tier
Imagen 4 Ultra vs Imagen 4 Fast: Which to Pick?
On a tight budget
At 5 credits per image, Imagen 4 Fast gives you more generations for your plan. Good enough quality for most everyday use.
Maximum quality matters
Imagen 4 Ultra is worth the extra credits when the output needs to be perfect — portfolio pieces, client work, or final deliverables.
Rapid iteration and testing
Imagen 4 Fast's fastest generation means you can test more prompts in less time. Great for exploration.
Imagen 4 Ultra vs Imagen 4 Fast: FAQ
Try Imagen 4 Ultra & Imagen 4 Fast
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