Gemini app: Free · API: from $0.045 per 0.5K image

Google’s Nano Banana image generation and editing family, represented by the current Nano Banana 2 (Gemini 3.1 Flash Image) for fast 4K-capable visual creation.
Gemini app: Free · API: from $0.045 per 0.5K image
0.5K / 1K / 2K / 4K · 4K dimensions vary by aspect ratio (e.g. 4096×4096 at 1:1; 5504×3072 at 16:9)
Conversational editing · local edits · multi-turn refinement
Google Nano Banana 2 is Gemini 3.1 Flash Image, Google’s current general-purpose image generation and editing model. It combines conversational editing, strong text rendering, Google Search grounding, multiple reference images and outputs from 0.5K to 4K.
| Starting Price | Gemini app: Free · API: from $0.045 per 0.5K image |
| Free Plan | Gemini app: Available without Google AI plan · API: no free tier for Nano Banana 2 |
| Usage Limits / Credits | Gemini app: plan/capacity-based limits · API Standard: $0.045 (0.5K), $0.067 (1K), $0.101 (2K), $0.151 (4K) per image |
| Primary Use Case | Image Generation & Conversational Editing |
| Best For | Creators / Marketing / Design / High-volume visual workflows |
| Platforms | Gemini app · Google AI Studio · Gemini API · Vertex AI / Google Cloud |
| Text-to-Image | Native text-to-image with Gemini 3.1 Flash reasoning and world knowledge |
| Image-to-Image | Conversational image-to-image editing with multi-reference support |
| Maximum Resolution | 0.5K / 1K / 2K / 4K · 4K dimensions vary by aspect ratio (e.g. 4096×4096 at 1:1; 5504×3072 at 16:9) |
| Aspect Ratios | 1:1 · 1:4 · 1:8 · 2:3 · 3:2 · 3:4 · 4:1 · 4:3 · 4:5 · 5:4 · 8:1 · 9:16 · 16:9 · 21:9 |
| Batch Generation | Batch API available · image output pricing is 50% lower than Standard API |
Creators / Marketing / Design / High-volume visual workflows
| Prompt Enhancement | Gemini reasoning + enhanced instruction following |
| Image Editing | Conversational editing · local edits · multi-turn refinement |
| Inpainting | Local / targeted edits to selected image content |
| Outpainting | Prompt-driven scene extension and recomposition |
| Object Removal | Prompt-based local object removal and replacement |
| Background Removal | Prompt-based background editing/removal |
| Background Replacement | Conversational background replacement |
| Generative Fill | Local generative edits and content replacement |
| Upscaling | Native output sizes: 0.5K / 1K / 2K / 4K · no separate upscaler documented |
| Reference Images | Up to 14 references: up to 10 object images + up to 4 character images |
| Style Control | Natural-language style and visual-direction control |
| Character Consistency | Up to 4 character reference images for maintaining character consistency |
| Style Reference | Multi-image references can guide visual style and composition |
| Pose / Composition Control | Prompt + reference-image composition control |
| Seed Control | No public seed parameter documented for Gemini image generation |
| Photorealism | Excellent · improved lighting, detail and visual fidelity |
| Text Rendering | Excellent · multilingual text rendering and localization |
| Typography / Logo Generation | Strong text/typography rendering for marketing assets, diagrams and infographics |
| Vector Generation | Raster image output · no native SVG/vector output documented |
| Transparent Background | Not documented as a dedicated output mode |
| Available Models | Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) · Nano Banana 2 (Gemini 3.1 Flash Image) · Nano Banana Pro (Gemini 3 Pro Image) · legacy Nano Banana (Gemini 2.5 Flash Image) |
| Model Selection | Nano Banana 2 recommended as the general-purpose model · model selectable in Gemini API / AI Studio |
| Custom Models | No user-trained custom base image models documented |
| Model Training | No end-user image model training · reference-driven consistency instead |
| API Access | Gemini API · model ID: gemini-3.1-flash-image |
| Integrations | Gemini app · Google AI Studio · Gemini API · Vertex AI |
| Automation Support | Gemini API · Batch API |
| Commercial Use | Available for production via paid Gemini API; use subject to Google terms and policies |
| Team Plan | Google Workspace / Gemini business access varies by Workspace plan |
| Enterprise Plan | Google Cloud / Vertex AI enterprise deployment available for Gemini models |
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