GPT Image 1.5 vs Nano Banana Pro

1. State-of-the-Art Image Generation

• Produces high-quality, detailed images optimized for realism, style control and prompt fidelity.
• Designed to handle complex visual scenes, compositions and lighting conditions.

2. Natively Multimodal Architecture

• Understands and reasons over both text and images as inputs.
• Ideal for workflows like editing based on reference images, expanding sketches or mockups and visual concept development.

3. Flexible Output Resolutions & Quality Levels

• Supports multiple resolutions including 1024x1024, 1024x1536 and 1536x1024.
• Offers three quality tiers (Low, Medium, High) to balance cost, speed and maximum detail.

4. Multiple Pricing Models

• Pay-per-token for multimodal input: text tokens and image tokens.
• Pay-per-image generation for final output: low, medium and high quality tiers.
• Enables businesses to balance cost and output needs.

5. Broad Use Cases

• Product photography and marketing assets.
• Illustration, concept art and creative ideation.
• UX/UI mockups.
• Style-guided image creation.
• Generating reference images for design or storytelling.

6. Supported Across Major API Endpoints

• Available via Chat Completions, Responses, Realtime, Assistants and Images (generations/edits) endpoints.
• Allows tight integration into automated creative pipelines or user-facing apps.

7. Simplified Model Behavior for Stability

• No streaming, function calling, structured outputs or fine-tuning; focused solely on high-quality image generation.

8. Consistent Results via Snapshots

• Supports snapshots for version locking to ensure long-term reproducibility.

9. Ideal For

• Designers, marketers and creatives.
• Product teams needing image assets.
• App builders integrating image generation workflows.
• Agencies producing visual content at scale.

1. Studio-quality image generation

• Built on Gemini 3 Pro for exceptionally high fidelity.
• Improved accuracy in composition, physics, lighting, and artistic style.

2. Precise creative controls

• Fine-tune lighting, camera, color grading, focus, and physical realism.
• Ideal for professional production workflows requiring creative direction.

3. Advanced text rendering & localization

• Produces crisp, accurate text inside images (signs, menus, labels, UI elements).
• Can localize text across different languages while preserving layout and style.

4. Multi-input creative workflows

• Supports up to 14 reference images for composite ads or mockups.
• Generates consistent resemblance for up to 5 individuals.
• Works with 2K and 4K resolution outputs.

5. Strong world knowledge

• Understands and reasons about real-world concepts.
• Generates factual assets like diagrams, maps, and educational content.

6. Google Search grounding (when enabled)

• Retrieves real-time web data to improve factual accuracy.
• Useful for data-driven graphics, infographics, and historically accurate visuals.

7. Enhanced editing capabilities

• Handles local edits, transformations, pose changes, and reference-based modifications.
• Maintains stylistic consistency during image-to-image operations.

8. Developer-friendly ecosystem

• Fully integrated into Google AI Studio, Vertex AI, and Antigravity platform.
• Supported in Adobe, Figma, and agentic development workflows.

9. SynthID provenance watermark

• Every generated or edited image includes an invisible SynthID watermark.
• Ensures content authenticity and responsible AI usage.