GPT Image 1.5
OpenAI's image generation model with strong prompt adherence, accurate text rendering, and three quality tiers. Available on Renas AI in the AI Image tool with built-in editing and storage.
Model Specs
- Released
- Oct 2025
- Aspect ratios
- 3 options
- Output formats
- PNG, JPEG, WEBP
- Pricing varies by
- quality
- Modalities
- textvision
Image generation capabilities
Aspect ratios, output formats, and style options supported by this model.
About this model
GPT Image 1.5 is OpenAI's image generation model — the successor to the original GPT Image 1, designed for higher fidelity and better prompt adherence at a cost-efficient price point. It produces images at three resolutions (1024×1024, 1024×1536, 1536×1024) and three quality tiers (low, medium, high), letting you trade compute cost against output detail. The model is particularly strong at rendering legible text inside images — a common weakness of earlier diffusion-based generators — and at following structured prompts with multiple specified elements.
On Renas AI, GPT Image 1.5 is available in the AI Image tool. You don't manage API keys or credit accounts at OpenAI directly — you spend Renas credits per image, and generated images are stored in your asset library with full commercial usage rights. The Renas image editor lets you do quick post-edits (background removal, upscaling, retouch) without leaving the platform, so the typical "generate → refine → publish" loop happens in one place.
Pick GPT Image 1.5 when you want OpenAI's prompt understanding and text rendering. Pick Nano Banana Pro for higher max resolution; pick Flux 2 Pro for photorealistic portraits; pick Recraft when you specifically need style consistency across a brand catalog. For everyday marketing creative, product mockups, and content visuals, GPT Image 1.5 is a strong default.
Key Strengths
Strong prompt adherence
GPT Image 1.5 follows complex prompts with multiple specified elements more reliably than earlier diffusion models — useful when you need a specific scene composition, object placement, or color scheme.
Accurate text rendering inside images
Earlier image models often produced garbled text. GPT Image 1.5 renders legible captions, signs, and labels inside generated images — important for marketing creative, infographics, and mockups.
Three quality tiers — low, medium, high
Pay only for the detail you need. Low ($0.009/image at OpenAI API rate) for thumbnails and rapid iteration; high ($0.13-$0.20/image) for hero visuals and print-ready output.
Three resolution options
Square 1024×1024 for social and product shots, vertical 1024×1536 for stories and posters, horizontal 1536×1024 for hero banners and presentations. No upscaling needed — generate at target size.
Multimodal input ready
GPT Image 1.5 accepts text and image references as input, enabling style transfer, image-to-image variation, and prompt + reference workflows.
Commercial usage included
All images generated on Renas AI are yours to use commercially — marketing campaigns, product listings, client deliverables, printed materials. No per-image licensing fees.
How it compares
GPT Image 1.5 sits among the leading image generation models alongside Nano Banana Pro, Flux 2 Pro, and Recraft. Each has a distinct strength.
| vs. Model | Verdict | Outcome |
|---|
Pros
- Strong prompt adherence — follows specific compositional instructions reliably
- Accurate text rendering inside images (rare in image generation models)
- Three quality tiers let you trade cost for detail per task
- Three resolutions cover square, vertical, and horizontal use cases
- Multimodal input (text + reference images) for style transfer workflows
- Commercial usage included with Renas AI plan
Things to consider
- Output capped at 1536×1024 / 1024×1536 — for 4K hero visuals, Nano Banana Pro is the better choice
- Single output format (PNG only) — for WebP or JPEG, post-convert in Renas image tools
- Photorealistic portraits often outperformed by Flux 2 Pro
- High quality tier ($0.13-$0.20/image at OpenAI rate) is more expensive than budget alternatives like Flux Schnell
Best use cases
Marketing and ad creative
Hero banners, social media visuals, ad campaign assets. Strong text rendering means you can generate headlines and CTAs directly inside the image without post-editing.
Product mockups and listings
Quickly visualize product concepts, generate lifestyle scenes for ecommerce listings, or produce variations across colors and angles. Combine with Renas Background Generator for marketplace-ready white-bg output.
Blog hero images and editorial visuals
1536×1024 horizontal hero images sized for blogs, articles, and content pages. Pair with the Blog Wizard to generate article + matching hero in one workflow.
Social media content
1024×1024 for Instagram, 1024×1536 for stories and reels, 1536×1024 for YouTube thumbnails and Twitter/X cards. All from a single model with consistent style across platforms.
Concept art and brainstorming
Rapid visual ideation — generate dozens of low-quality drafts, pick the strongest, then re-generate at high quality. The 3-tier pricing makes iteration affordable.
Infographic and diagram visuals
Strong text rendering makes GPT Image 1.5 well-suited for explanatory visuals — process diagrams, comparison charts, illustrated concepts where labels matter.
How to use it on Renas AI
- 1
Step 1
Open the AI Image tool
Navigate to AI Image in the Renas dashboard. Pick GPT Image 1.5 from the model selector. The tool shows the live credit cost based on your selected resolution and quality tier.
- 2
Step 2
Pick resolution and quality
Choose 1024×1024 for square output, 1024×1536 for vertical, 1536×1024 for horizontal. Pick low quality for rapid iteration, medium for normal use, high for final hero visuals or print.
- 3
Step 3
Write a clear, specific prompt
GPT Image 1.5 follows specific prompts well. Describe the subject, scene, lighting, mood, style, and any text that should appear inside the image. The more specific the prompt, the more predictable the result.
- 4
Step 4
Generate, review, refine
Generate the image, review the result, regenerate with prompt tweaks if needed. Use Renas image tools (background removal, photo retouch, upscaling) for post-edits without leaving the platform.
Pricing
Pricing on Renas AI
Pay-as-you-go credits, no API keys, no rate limits.
Frequently asked questions
Other OpenAI models
Generate professional images in seconds
Use GPT Image 1.5 with your Renas AI subscription credits — no API key, no setup, no per-seat fees.
Try GPT Image 1.5