Flux Ultra 1.1 vs GPT-Image 1.5
3D renders, CGI scenes, and digital art — see how these models compare with real AI-generated outputs.
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Flux Ultra 1.1 and GPT-Image 1.5 are two strong options in Influencer Studio for creating 3D graphics—from polished product CGI and cinematic environments to stylized digital art that still reads as “3D.” Both support text-to-image workflows, but they differ in how they balance realism, scene control, and cost per render.
This comparison focuses on what matters most for 3D renders and CGI scenes: surface detail, material realism, lighting coherence, camera consistency, and how reliably each model follows complex prompts (objects, composition, style, and scene constraints).
Which Model Should You Choose?
Short answer: Flux Ultra 1.1 is better for premium photoreal detail, while GPT-Image 1.5 is better for accurate prompt adherence. If you are creating 3d graphics, start with GPT-Image 1.5 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 | GPT-Image 1.5 | GPT-Image 1.5 costs 8 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 | GPT-Image 1.5 | GPT-Image 1.5 renders labels and typography more cleanly. |
| Editing and reference-driven iteration | GPT-Image 1.5 | GPT-Image 1.5 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. |
| 3D Graphics specifically | Flux Ultra 1.1 | Flux Ultra 1.1 scores higher on realism, which matters most for 3d graphics. |
How They Compare, Criterion by Criterion
| Criteria | Flux Ultra 1.1 | GPT-Image 1.5 | Winner |
|---|---|---|---|
| Realism | ●●●●● | ●●●●○ | Flux Ultra 1.1 |
| Text accuracy | ●●○○○ | ●●●●○ | GPT-Image 1.5 |
| Editing flexibility | ●●○○○ | ●●●○○ | GPT-Image 1.5 |
| Cost efficiency | ●●●○○ | ●●●○○ | Tie |
| Final polish | ●●●●● | ●●●●○ | Flux Ultra 1.1 |
| Consistency | ●●●●○ | ●●●●○ | Tie |
| Best first test | ●●●○○ | ●●●○○ | GPT-Image 1.5 |
How We Compare These Models
Models compared
Flux Ultra 1.1 vs GPT-Image 1.5
Use case
3D Graphics
Flux Ultra 1.1 — best for
premium photoreal detail
GPT-Image 1.5 — best for
accurate prompt adherence
Flux Ultra 1.1 — avoid if
You need editing, text accuracy, or low-cost iteration
GPT-Image 1.5 — avoid if
You need the lowest cost or advanced editing flexibility
Credits per image (Flux Ultra 1.1)
16 credits
Credits per image (GPT-Image 1.5)
8 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
GPT-Image 1.5 renders any labels, overlays, or typography more cleanly.
Commercial usability
Flux Ultra 1.1 is closer to a ready-to-use image asset; GPT-Image 1.5 is better for concepting.
Recommended next step
Use GPT-Image 1.5 for first-pass variants, then Flux Ultra 1.1 for final polish.
3D Graphics — Side-by-Side Results
Prompt
"Photorealistic 3D render (Blender/Unreal Engine look) of a mid-20s woman with shoulder-length wavy dark brown hair in a beige hoodie and black leggings, holding her phone at arm’s length for a casual selfie while glancing near the camera with a slightly messy “just got here” expression. She’s in a small sunny neighborhood café by a window, one hand on an iced latte and a tote bag on the chair, background showing pastry case and a couple blurred customers; natural morning light with soft volumetric rays, subsurface scattering on skin, and physically-based fabrics and glass reflections. Candid Instagram-story vibe, imperfect framing with a bit of motion blur and realistic phone-camera perspective."
Feature Comparison
| Feature | Flux Ultra 1.1 | GPT-Image 1.5 |
|---|---|---|
| Provider | Black Forest Labs | OpenAI |
| Subcategories | text-to-image | text-to-image |
| 1080p / 2k Mode | Yes | Yes |
| 4k Mode | No | No |
| NSFW Rating | Strict | Strict |
| 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 | 8 credits |
Flux Ultra 1.1 Strengths
- Exceptional micro-detail for 3D-style surfaces (materials, pores, brushed metal, fabric weave) that helps renders feel premium
- Strong photorealistic lighting and reflections for product CGI, studio setups, and “rendered-but-real” hero shots
- Consistently high-end output at a predictable cost (16 credits per image), useful for premium deliverables
- Great for close-ups where geometry, texture fidelity, and sharpness sell the 3D illusion
GPT-Image 1.5 Strengths
- Strong prompt adherence for complex 3D scenes (multiple objects, specific composition, camera notes, and art direction)
- Versatile look control—works well for both realistic CGI and stylized 3D digital art depending on the prompt
- Tiered pricing (8/16/32 credits) lets you choose faster drafts vs higher-fidelity finals for 3D concepting
- Reliable for scene readability (clear object relationships, layout, and requested elements) in detailed environments
Verdict
If your priority is premium, photoreal 3D-style renders with standout texture and lighting—especially for product CGI, close-ups, and portfolio-grade hero images—Flux Ultra 1.1 is the stronger default at 16 credits per image.
If you need tight art direction and dependable prompt-following for complex CGI scenes (and want the flexibility to iterate cheaply before committing to a high-quality final), GPT-Image 1.5 is often the better workflow fit thanks to its controllability and quality tiers.
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