Flux Ultra 1.1 vs Seedream 4.5
Anime-style characters, manga aesthetic, and cel-shading — see how these models compare with real AI-generated outputs.
Full comparisonCompare Models (select 4)
Looking to generate polished anime-style characters, crisp manga linework, or clean cel-shaded scenes in Influencer Studio? Flux Ultra 1.1 and Seedream 4.5 both deliver high-quality results at the same price point, but they excel in different parts of an anime workflow.
Flux Ultra 1.1 leans into ultra-fine detail and premium rendering, which can translate into richly textured anime illustrations (and anime-adjacent “semi-real” looks). Seedream 4.5 stands out for versatility—especially when you want to iterate, refine, or transform an existing image while keeping an anime aesthetic consistent.
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 anime, 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. |
| Anime specifically | Either model | Both are well-suited to anime; pick by budget vs polish. |
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
Anime
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.
Anime — Side-by-Side Results
Prompt
"Anime-style cel-shaded illustration of a 20s woman with shoulder-length teal hair and soft bangs, big expressive eyes, wearing an oversized beige hoodie and black biker shorts, holding her phone up for a mirror selfie while glancing slightly toward the camera with a relaxed half-smile. She’s in a small apartment bedroom doing a casual “outfit check,” messy bed and laundry basket in the background, warm morning window light and subtle phone flash reflection for a real Instagram Story vibe. Natural, imperfect framing with a little motion blur in her hand like a candid TikTok 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
- Excellent micro-detail for hair strands, fabric patterns, accessories, and ornate character designs
- Strong lighting and depth that can enhance “cinematic anime” or semi-real anime renders
- Premium-quality outputs that hold up well for posters, key art, and high-resolution crops
- Good at complex compositions (multiple characters, dynamic poses) when prompts are specific
Seedream 4.5 Strengths
- Image-to-image editing for refining faces, outfits, poses, and backgrounds without restarting from scratch
- Versatile style handling—solid for classic cel-shading, modern anime, and manga-inspired looks
- Efficient iteration for consistent character variations (expressions, outfits, colorways)
- High-resolution output suitable for thumbnails, banners, and social-first anime content
Verdict
Choose Flux Ultra 1.1 when your goal is premium, ultra-detailed anime key art—especially “high polish” renders with dramatic lighting, intricate costumes, and sharp finish. It’s a strong pick for hero images where the final frame matters more than rapid iteration.
Choose Seedream 4.5 when you want an anime model that supports an editing-driven workflow—iterating on an existing image, keeping character identity stable across variations, and dialing in cel-shading or manga aesthetics through controlled revisions. With both priced at 16 credits per image, the best value depends on whether you prioritize maximum detail (Flux Ultra 1.1) or flexible refinement (Seedream 4.5).
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