Flux Ultra 1.1 vs Seedream 4.5
Hyperrealistic renders indistinguishable from photographs — see how these models compare with real AI-generated outputs.
Full comparisonCompare Models (select 4)
For truly photorealistic generation—images that read like real camera captures—small differences in skin texture, lens behavior, lighting roll-off, and material response matter. Flux Ultra 1.1 and Seedream 4.5 are both positioned for high-quality output on Influencer Studio, but they approach “realism” from slightly different strengths.
This comparison focuses exclusively on hyperrealistic results: how convincingly each model handles faces, hands, fabrics, reflections, depth of field, and the subtle imperfections that make an image feel photographed rather than rendered.
Photorealistic — Side-by-Side Results
Prompt
"Hyperrealistic DSLR-quality photo of a 22–28-year-old woman with shoulder-length wavy dark brown hair in a cozy hoodie and black leggings, holding her phone slightly above eye level for a casual front-camera selfie while glancing near the lens mid-sentence. She’s standing in a small kitchen with a cluttered counter (coffee mug, toast, skincare bottles), morning window light spilling in naturally with soft shadows and realistic skin texture/imperfections. Authentic TikTok “day in my life” vibe, candid expression, slightly messy hair, no editorial posing."
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 skin, hair, fabric weave, and fine textures that sell a “shot on camera” look
- Strong photorealistic lighting and material rendering (metal, glass, skin sheen) with crisp, premium clarity
- Great for hero images where realism at close inspection is the priority (portraits, product close-ups, editorial-style shots)
- Consistently high-end output without needing heavy prompt engineering to reach a realistic baseline
Seedream 4.5 Strengths
- Image-to-image editing makes it easier to refine a near-photoreal result without restarting from scratch
- Versatile realism across scenarios (portraits, interiors, lifestyle) while maintaining high resolution and clean output
- Practical for iterative workflows: adjust composition, wardrobe, background, or lighting direction through edits
- Good balance of realism and controllability when you need multiple variations that stay on-brief
Verdict
If your priority is maximum photoreal “premium finish” detail—especially for close-up portraits or product-style hero frames—Flux Ultra 1.1 is typically the stronger pick. It leans into ultra-high detail and a polished, camera-like look that holds up under scrutiny.
If your workflow depends on revising and perfecting realism through targeted changes, Seedream 4.5 stands out thanks to image-to-image editing and flexible iteration. Since both cost 16 credits per image, the better value depends on whether you optimize for peak single-shot realism (Flux Ultra 1.1) or realistic iteration and refinement (Seedream 4.5).
Frequently Asked Questions
More Comparisons by Category
Try Both Models Free
Sign up and get credits to test Flux Ultra 1.1, Seedream 4.5, and all our other AI models for photorealistic.
Join Influencer Studio Today
Start creating amazing AI-generated content for your brand