Flux Ultra 1.1 vs Seedream 4.5
Top-down arranged compositions and aesthetic product flat lays — see how these models compare with real AI-generated outputs.
Full comparisonCompare Models (select 4)
Flat lay images live or die by the details: believable top-down perspective, clean object separation, natural shadows, and styling that feels intentionally arranged rather than randomly scattered. On Influencer Studio, both Flux Ultra 1.1 and Seedream 4.5 can produce high-quality flat lays, but they shine in different parts of the workflow.
Flux Ultra 1.1 focuses on premium, photorealistic generation with ultra-high detail—ideal when you want a “finished” top-down product scene in one prompt. Seedream 4.5 pairs strong generation with image-to-image editing, which is especially useful for iterating on composition, swapping items, or refining layout without restarting from scratch.
Which Model Should You Choose?
Short answer: Flux Ultra 1.1 is better for premium photoreal detail, while Seedream 4.5 is better for versatile editing. If you are creating flat lay, start with Seedream 4.5 because it costs fewer credits per output and lets you test more directions, then switch to Flux Ultra 1.1 for polished, higher-resolution final assets.
| If you need… | Choose | Why |
|---|---|---|
| Lower-cost exploration and more variants per credit | Seedream 4.5 | Seedream 4.5 costs 16 credits to start, so you can test more directions for less. |
| Polished, ready-to-ship final assets | Flux Ultra 1.1 | Flux Ultra 1.1 produces stronger final-asset polish for campaign-ready output. |
| Readable text in designs, overlays, and packaging | Seedream 4.5 | Seedream 4.5 renders labels and typography more cleanly. |
| Editing and reference-driven iteration | Seedream 4.5 | Seedream 4.5 is more flexible for editing from references or existing outputs. |
| Consistent characters and repeated campaign visuals | Either model | Either model holds character and style consistency better across outputs. |
| Flat Lay specifically | Flux Ultra 1.1 | Flux Ultra 1.1 scores higher on final polish, which matters most for flat lay. |
How They Compare, Criterion by Criterion
| Criteria | Flux Ultra 1.1 | Seedream 4.5 | Winner |
|---|---|---|---|
| Realism | ●●●●● | ●●●●○ | Flux Ultra 1.1 |
| Text accuracy | ●●○○○ | ●●●○○ | Seedream 4.5 |
| Editing flexibility | ●●○○○ | ●●●●○ | Seedream 4.5 |
| Cost efficiency | ●●●○○ | ●●●●○ | Seedream 4.5 |
| Final polish | ●●●●● | ●●●●○ | Flux Ultra 1.1 |
| Consistency | ●●●●○ | ●●●●○ | Tie |
| Best first test | ●●●○○ | ●●●●○ | Seedream 4.5 |
How We Compare These Models
Models compared
Flux Ultra 1.1 vs Seedream 4.5
Use case
Flat Lay
Flux Ultra 1.1 — best for
premium photoreal detail
Seedream 4.5 — best for
versatile editing
Flux Ultra 1.1 — avoid if
You need editing, text accuracy, or low-cost iteration
Seedream 4.5 — avoid if
You need premium hero-level polish or perfect text
Credits per image (Flux Ultra 1.1)
16 credits
Credits per image (Seedream 4.5)
16 credits
Last updated
June 8, 2026
What the Examples Show
Realism
Flux Ultra 1.1 tends to produce more natural skin texture, lighting, and detail in these outputs.
Text accuracy
Seedream 4.5 renders any labels, overlays, or typography more cleanly.
Commercial usability
Flux Ultra 1.1 is closer to a ready-to-use image asset; Seedream 4.5 is better for concepting.
Recommended next step
Use Seedream 4.5 for first-pass variants, then Flux Ultra 1.1 for final polish.
Flat Lay — Side-by-Side Results
Prompt
"Top-down flat lay overhead shot on a light wood kitchen table: a 20s woman with shoulder-length wavy brown hair and a cozy oversized grey sweatshirt leans into the frame from the edge, looking up toward the phone camera with a relaxed, just-woke-up expression while her hand reaches for a ceramic mug. A casually styled breakfast scene is neatly arranged—oat milk carton, matcha whisk, small bowl of berries, open journal with messy handwritten to-do list, gold hoops, lip balm, and phone with Instagram Story draft visible—balanced composition on a clean surface. Soft natural window light, slightly imperfect candid vibe like a real UGC morning routine post."
Feature Comparison
| Feature | Flux Ultra 1.1 | Seedream 4.5 |
|---|---|---|
| Provider | Black Forest Labs | ByteDance |
| Subcategories | text-to-image | text-to-image, image-to-image |
| 1080p / 2k Mode | Yes | Yes |
| 4k Mode | No | No |
| NSFW Rating | Strict | Low |
| Aspect Ratio | 1:1, 16:9, 9:16, 3:4, 4:3, 21:9 | 1:1, 16:9, 9:16, 3:4, 4:3 |
| Starting Price | 16 credits | 16 credits |
Flux Ultra 1.1 Strengths
- Exceptional micro-detail for flat lays (textures, fabric weave, label edges, subtle surface grain)
- Photorealistic lighting and shadow behavior that helps top-down scenes feel grounded and premium
- Strong material realism (glass, metal, paper, ceramics) for product-centric flat lay compositions
- Crisp, high-end look that works well for ecommerce-style overhead shots and hero images
Seedream 4.5 Strengths
- Image-to-image editing for flat lay iteration (rearrange items, adjust styling, refine spacing) without losing the overall scene
- Versatile style range (clean studio flat lay, lifestyle tabletop, editorial mood boards) from the same base concept
- High-resolution output that holds up for social crops (1:1, 4:5, 9:16) and detail punch-ins
- Practical for “client feedback” workflows—make targeted changes instead of regenerating entirely
Verdict
If your priority is a premium, photoreal flat lay that looks production-ready with minimal iteration, Flux Ultra 1.1 is the stronger pick—especially for product texture fidelity and convincing top-down lighting.
If you expect to iterate on layout (move objects, refine negative space, test alternate props) or you already have a reference flat lay to improve, Seedream 4.5 is often the more efficient choice thanks to its editing workflow. Pricing is identical at 16 credits per image, so the decision typically comes down to “best first-shot realism” (Flux Ultra 1.1) versus “best iteration and control” (Seedream 4.5).
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