Flux Ultra 1.1 vs Seedream 4.5
Business-appropriate professional portraits — see how these models compare with real AI-generated outputs.
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Choosing the right model for a LinkedIn Professional Photo is about more than sharpness—it’s about credibility. You want business-appropriate lighting, natural skin texture, realistic wardrobe, and a clean background that reads as “corporate” without looking over-processed or synthetic.
Below is a practical comparison of Flux Ultra 1.1 and Seedream 4.5 for generating LinkedIn-ready headshots and professional portraits inside Influencer Studio. Both cost 16 credits per image, but they differ in how they handle realism, control, and iterative refinement.
LinkedIn Professional Photo — Side-by-Side Results
Prompt
"A candid phone-camera selfie of a 30–38-year-old professional with shoulder-length dark hair in a neat side part, wearing a navy blazer over a simple white tee, minimal jewelry, and natural makeup, looking slightly past the camera with an approachable confident smile. Shot in a real co-working space lobby near a window (soft natural daylight), one hand holding a coffee cup and the other holding the phone, subtle background blur with neutral walls and a plant—authentic LinkedIn-friendly influencer vibe, not editorial. Keep it clean and professional, realistic skin texture, everyday moment like an Instagram story thumbnail."
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 photorealism for headshots, with strong micro-detail (skin texture, hair strands, fabric weave) that helps portraits feel camera-captured
- Consistently crisp facial features and edge definition, useful for clean, high-trust LinkedIn framing (head-and-shoulders or tight portrait crops)
- Strong lighting realism (softbox-style key light, natural falloff) that supports corporate studio aesthetics
- Premium-looking output quality that often needs less post-processing to appear “finished”
Seedream 4.5 Strengths
- Built-in image-to-image editing makes it easier to iterate toward a LinkedIn-safe look (adjust background, outfit vibe, framing, or expression) without starting over
- Versatile handling of styles while still maintaining professional realism—helpful when matching different industries (tech, finance, healthcare, real estate)
- High-resolution output suitable for profile and banner use, with good overall clarity for web display
- Practical for refining an existing portrait into a more corporate version (cleaner background, more neutral grading, more formal styling)
Verdict
If your priority is a premium, photorealistic LinkedIn headshot from text prompts—with studio-grade detail and minimal extra work—Flux Ultra 1.1 is typically the stronger choice for first-pass “wow” realism.
If you expect to iterate and edit (for example, keep the same face while changing background tone, wardrobe formality, or cropping), Seedream 4.5 is often the more efficient workflow thanks to its image-to-image capabilities. With both priced at 16 credits/image, the best value depends on whether you need top-tier one-shot generation (Flux Ultra 1.1) or flexible refinement (Seedream 4.5).
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