Flux Ultra 1.1 vs GPT-Image 1.5
Polished ad creative for social platforms — see how these models compare with real AI-generated outputs.
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Flux Ultra 1.1 and GPT-Image 1.5 are both strong choices for creating polished social media ads in Influencer Studio—think scroll-stopping product hero shots, lifestyle scenes, and campaign-ready creatives for feeds and stories. The key differences show up in how each model balances photorealistic finish, control from your prompt, and cost predictability per output.
Below is a practical comparison focused on ad production needs: crisp detail, brand-safe composition, reliable prompt adherence, and efficient iteration when you’re testing multiple hooks, angles, and layouts for paid social.
Social Media Ad — Side-by-Side Results
Prompt
"A mid-20s woman with shoulder-length wavy brown hair in a cozy oversized cream sweater and light-wash jeans sits by a sunny café window, holding an iced latte in one hand and a sleek collagen drink bottle in the other, glancing toward the phone camera with a casual half-smile like a TikTok “morning routine” clip. Candid, slightly messy table with a laptop and sunglasses, bright clean natural window light, handheld phone-camera look with mild background blur and realistic skin texture. Product label clearly visible, lifestyle-ad vibe that feels like a real Instagram story ad."
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
- Premium, photorealistic look that elevates product hero images and lifestyle ad scenes
- Exceptional micro-detail and texture rendering (materials, skin, fabric, packaging) for high-end creatives
- Strong “finished” aesthetic that often needs fewer post-edits for feed-ready polish
- Predictable pricing per image (16 credits) that’s easy to budget for consistent output quality
GPT-Image 1.5 Strengths
- Strong prompt adherence for tighter control over ad concepts, props, composition, and scene requirements
- Versatile quality tiers (8/16/32 credits) for rapid iteration, then upscale to higher fidelity for finals
- Reliable handling of detailed scenes when you need multiple elements to match a specific ad brief
- Good fit for A/B testing variations (backgrounds, angles, lighting, seasonal themes) without always paying premium credits
Verdict
If your priority is premium, photorealistic ad creative that looks high-end out of the gate—especially for product-focused campaigns—Flux Ultra 1.1 is the straightforward pick with consistent 16-credits-per-image pricing.
If your workflow depends on precise prompt control and fast creative iteration (draft low, refine, then export high), GPT-Image 1.5 is often the more flexible option thanks to its strong prompt adherence and tiered pricing that supports efficient testing for paid social.
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