GPT-Image 1.5 vs Z-Image Turbo
Business-appropriate professional portraits — see how these models compare with real AI-generated outputs.
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Choosing the right model for a LinkedIn Professional Photo is less about flashy effects and more about credibility: natural skin texture, clean lighting, business-appropriate styling, and a background that doesn’t distract. In Influencer Studio, both GPT-Image 1.5 and Z-Image Turbo can generate professional portraits from text prompts, but they optimize for different priorities.
GPT-Image 1.5 focuses on high-fidelity output and strong prompt adherence—useful when you need precise wardrobe, lighting, and a polished, realistic headshot look. Z-Image Turbo emphasizes speed and cost predictability, with added flexibility via image-to-image and LoRA support for repeatable styles across teams or campaigns.
LinkedIn Professional Photo — Side-by-Side Results
Prompt
"A candid phone-camera selfie of a 28–35-year-old professional with neat shoulder-length hair, light natural makeup, and a relaxed blazer over a plain crew-neck top, holding their laptop sleeve and coffee while looking just off-camera with an approachable smile. Shot in a real coworking café near a window (soft natural daylight), slightly imperfect framing like an Instagram story, background lightly blurred with people and plants visible. Clean, LinkedIn-appropriate vibe: well-groomed, confident but casual, no editorial styling or dramatic lighting."
Feature Comparison
| Feature | GPT-Image 1.5 | Z-Image Turbo |
|---|---|---|
| Provider | OpenAI | Tongyi Lab (Alibaba) |
| 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 | 1:1, 16:9, 9:16, 3:4, 4:3 |
| Starting Price | 8 credits | 8 credits |
GPT-Image 1.5 Strengths
- High-fidelity portrait detail (skin texture, hair, fabric) suited to premium LinkedIn headshots
- Strong prompt adherence for specific business looks (e.g., navy blazer, neutral backdrop, soft key light)
- Handles nuanced lighting setups well (studio-style, window light, subtle rim light) for a credible professional finish
- Better suited for “final” outputs where realism and polish matter more than iteration speed
- Flexible quality tiers (8/16/32 credits) to balance draft vs hero-image needs
Z-Image Turbo Strengths
- Ultra-fast generation for rapid iteration on pose, crop, wardrobe, and background options
- Cost-effective and predictable pricing (8 credits per image) for producing many LinkedIn variations
- Image-to-image support helps keep a consistent identity or refine an existing headshot concept
- LoRA support enables consistent brand styling (e.g., company-wide portrait aesthetic) across multiple people
- Great for bulk production workflows (multiple candidates, teams, or campaign refreshes)
Verdict
If you want the most LinkedIn-ready realism—clean facial detail, believable lighting, and strong control over professional styling—GPT-Image 1.5 is typically the better pick, especially when you’re generating a final portrait that needs to look polished and credible at profile-photo size.
If your priority is speed, volume, and consistency tooling (image-to-image + LoRA) for multiple variations or team-wide portrait generation, Z-Image Turbo is a strong option. Many workflows use Z-Image Turbo to iterate quickly, then switch to GPT-Image 1.5 for the final, highest-fidelity selection.
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