Nano Banana Pro vs GPT Image 1.5

Nano Banana Pro is powered by Gemini Pro Image — Google's most capable image model. It generates up to 4K resolution output, accepts up to 8 reference images that are blended into a single coherent result, and operates with a 64K input context window. Multi-turn dialogue editing lets you refine outputs without full regeneration, and search-grounded generation draws on Google's knowledge base for accurate diagrams, infographics, and scientific visuals.

4K High-Fidelity Output

Generate at 1K, 2K, or 4K resolution — ideal for print, product photography, and high-fidelity brand assets.

8-Image Composition

Blend up to 8 reference images into one coherent output — consistent lighting, perspective, and style across all inputs.

64K Context Window

64K input context enables complex multi-image instructions, long creative briefs, and intricate multi-step editing sequences.

Multi-Turn Editing

Refine your image through dialogue — ask for adjustments, tweak specific elements, and iterate without restarting from scratch.

GPT Image 1.5 is OpenAI's image generation model — the same model powering image creation in ChatGPT-4o. It excels at accurate text rendering inside images, image editing with mask-based inpainting, and complex multi-object scenes (10–20 distinct objects). Three quality levels (low/medium/high) let you balance speed and detail. Outputs in PNG, JPEG, or WebP with optional background transparency.

Accurate Text Rendering

Renders legible, correctly spelled text inside images — signs, labels, posters, UI mockups, and book covers without the glitchy text issue.

Image Editing & Inpainting

Edit existing images using mask-based inpainting — replace specific areas, change backgrounds, or add/remove objects while preserving the rest.

Multi-Object Scenes

Generates scenes with 10–20 distinct objects with consistent spatial relationships, accurate details, and world-knowledge integration.