Flux Ultra 1.1 vs Seedream 4.5
Urban candid and city life documentation — see how these models compare with real AI-generated outputs.
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Street photography lives or dies on believable moments: candid gestures, imperfect framing, mixed lighting, and the textured chaos of city life. In Influencer Studio, Flux Ultra 1.1 and Seedream 4.5 both aim for high-quality, photoreal street scenes—but they get there in different ways.
Flux Ultra 1.1 focuses on premium, ultra-detailed image generation, making it a strong choice when you want crisp realism and rich urban textures straight from a text prompt. Seedream 4.5 pairs high-quality generation with image-to-image editing, which can be especially useful for refining composition, adjusting subjects, or maintaining a consistent documentary series across multiple shots.
Street Photography — Side-by-Side Results
Prompt
"A 20s woman with shoulder-length wavy dark hair in a thrifted oversized denim jacket, black tank top, and loose cargo pants holds her phone at arm’s length for a casual selfie video, glancing near the camera mid-sentence with a half-smile. She’s on a gritty city sidewalk outside a corner café with peeling posters, bike racks, and wet pavement reflections after rain, pedestrians blurred behind her, shot like 35mm film street photography with grain and imperfect framing. Natural overcast daylight, ambient street tones, documentary feel—authentic Instagram story vibe, not polished."
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 photoreal detail for urban textures (asphalt, brick, signage, fabric, reflections)
- Strong single-shot impact: sharp subjects and convincing city atmosphere from text-to-image
- Handles complex lighting scenarios well (night streets, neon spill, mixed indoor/outdoor light)
- Premium-quality output suited for close crops and editorial-style street portraits
Seedream 4.5 Strengths
- Image-to-image editing for iterative street sets (refine framing, adjust mood, keep a consistent look)
- Versatile style control: from gritty documentary to cleaner editorial street aesthetics
- High-resolution output that works well for series building and content repurposing
- Practical for “fixing” near-misses (reduce distractions, tweak background elements, adjust subject emphasis)
Verdict
If your priority is maximum photoreal punch and micro-detail in a single generation—like a hero shot of a passerby in dramatic city light—Flux Ultra 1.1 is the stronger pick for street photography output straight from text-to-image.
If you’re building a cohesive urban candid series and expect to iterate—matching color, preserving a recurring location vibe, or revising a generated frame—Seedream 4.5’s editing workflow can be the better day-to-day choice. Both cost 16 credits per image, so the decision mostly comes down to whether you value top-end generation detail (Flux Ultra 1.1) or flexible refinement and continuity (Seedream 4.5).
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