Flux Ultra 1.1 vs GPT-Image 1.5
Runway, editorial, and outfit-of-the-day content — see how these models compare with real AI-generated outputs.
Full comparisonCompare Models (select 4)
Fashion photography lives or dies on fabric realism, flattering lighting, and styling accuracy. In Influencer Studio, Flux Ultra 1.1 and GPT-Image 1.5 both target high-quality text-to-image results, but they differ in how they prioritize photoreal detail vs. prompt precision—especially for runway looks, editorial storytelling, and outfit-of-the-day (OOTD) posts.
Below is a practical comparison focused on the needs of creators and brands: skin and fabric texture, accessory fidelity, pose and composition control, and the cost of generating consistent sets for campaigns.
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 fashion photography, 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. |
| Fashion Photography specifically | Flux Ultra 1.1 | Flux Ultra 1.1 scores higher on final polish, which matters most for fashion photography. |
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
Fashion Photography
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.
Fashion Photography — Side-by-Side Results
Prompt
"A 22–28-year-old woman with shoulder-length wavy brown hair in a casual oversized gray hoodie and bike shorts holds her phone slightly above eye level for a front-camera selfie, glancing near the lens mid-sentence like a TikTok story. She’s in a bright kitchen by a window with messy countertops and a coffee mug, lit by soft natural morning light with slight motion blur like a real UGC clip thumbnail. The vibe is candid and approachable—no heavy makeup, minimal styling, just an everyday “getting ready” moment."
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 photorealism for runway-style closeups (skin texture, hair detail, and realistic lighting falloff)
- Strong fabric rendering for premium materials (leather, denim grain, knits, sequins) that reads “high-end” in editorial frames
- Ultra-high detail helps accessories and finishing touches pop (stitching, jewelry reflections, handbag hardware)
- Great for hero images where a single standout shot matters more than rapid iteration
GPT-Image 1.5 Strengths
- Strong prompt adherence for styling specifics (silhouette, colorway, garment list, setting, and shot type)
- Versatile output for OOTD content (clean, social-ready compositions and repeatable framing concepts)
- Handles detailed scenes well for editorial narratives (location cues, props, and multi-element compositions)
- Flexible pricing tiers let you match spend to deliverable needs (8/16/32 credits depending on quality level)
Verdict
If your priority is a premium, photoreal “hero shot” for runway or high-gloss editorial—where micro-texture and realism sell the garment—Flux Ultra 1.1 is a strong fit at 16 credits per image.
If you need tighter control over exact outfit requirements, consistent creative direction across a set, or you want to scale OOTD iterations with a lower-cost option, GPT-Image 1.5 is often the more flexible choice thanks to its prompt adherence and tiered pricing (8/16/32 credits).
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