Flux Ultra 1.1 vs GPT-Image 1.5
Interior design, staging, and property listings — see how these models compare with real AI-generated outputs.
Full comparisonCompare Models (select 4)
For real estate & interiors, image generation quality isn’t just about “looking good”—it’s about selling space. You need accurate room proportions, believable lighting, clean lines, and materials that read as premium in listing galleries, brochures, and social ads.
Flux Ultra 1.1 and GPT-Image 1.5 both create high-quality interior visuals from text prompts, but they differ in how they prioritize photorealism, detail, and control. Below is a practical comparison focused on interior design concepts, virtual staging, and property listing imagery—plus how their credit costs map to common real estate workflows.
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 real estate & interiors, 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. |
| Real Estate & Interiors specifically | Flux Ultra 1.1 | Flux Ultra 1.1 scores higher on realism, which matters most for real estate & interiors. |
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
Real Estate & Interiors
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.
Real Estate & Interiors — Side-by-Side Results
Prompt
"Wide-angle phone photo like an Instagram story in a beautifully staged modern living room (Zillow/Airbnb hero vibe): bright natural window light, clean neutral sofa, textured rug, indoor plants, minimalist art, tidy coffee table. A woman in her mid-20s with shoulder-length wavy brown hair, wearing a casual oversized beige sweater and leggings, stands near the edge of the frame holding her phone at chest height, looking just past the camera with a relaxed “showing you my new place” expression, mid-step like she’s about to sit down. Natural daylight only, slightly imperfect candid framing, realistic interior real-estate look (not cinematic, not editorial)."
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 listing-style interior shots (natural light, realistic shadows, crisp surfaces)
- Ultra-high detail rendering that helps materials feel tangible (wood grain, stone veining, fabric texture)
- Premium “hero image” output suited for cover photos, brochures, and high-end property marketing
- Strong performance on wide interior compositions where clarity across the whole room matters
- Consistent upscale look that elevates luxury condos, new builds, and designer staging concepts
GPT-Image 1.5 Strengths
- Strong prompt adherence for staging direction (specific furniture styles, color palettes, layout constraints)
- Versatile fidelity settings (low/medium/high) to match draft-to-final workflows and budgets
- Detailed multi-object scenes that follow instructions well (decor sets, art placement, accessory lists)
- Good for iterating multiple design options quickly (e.g., “Scandi vs. Modern Farmhouse vs. Japandi”)
- Flexible output for different listing needs—concept mockups, social variations, and A/B creative testing
Verdict
If your priority is premium, photorealistic “this could be a real listing photo” output—especially for luxury interiors or hero shots—Flux Ultra 1.1 is the stronger fit at a straightforward 16 credits per image.
If you need tighter control over instructions (specific staging rules, styles, and object lists) and want the option to scale cost by quality, GPT-Image 1.5 is often the more flexible choice with 8/16/32 credit tiers for draft, standard, and high-fidelity renders.
Frequently Asked Questions
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