Nano Banana 2
Nano Banana 2 is Google's new state-of-the-art fast image generation and editing model
By Google
Pricing: $0.08 per image
Overview
Nano Banana 2 by Google, fast image generation across 4 resolution tiers (0.5K–4K). Optional web search and thinking modes. SynthID watermarking on every output.
Key capabilities
- **4 resolution tiers in one model**, From 0.5K (fastest, cheapest) to 4K, choose the right resolution per request without switching models.
- **14 aspect ratios including extremes**, Native support for 14 ratios from 21:9 to 1:8, including panoramic (8:1) and ultra-tall (1:8) formats with no letterboxing.
- **Character consistency up to 5 people**, Maintain consistent character appearance across up to 5 people in a single generation, ideal for storytelling, campaigns, and multi-character scenes.
- **SynthID watermarking**, Every output carries Google's SynthID digital watermark, invisibly embedded and robust to common edits, enabling attribution and provenance tracking.
- **Web search + thinking modes**, Optional web search grounds generation in current events. Thinking mode adds reasoning for complex prompts, both priced as add-ons.
Nano Banana model family by Google
| Model | Details |
|---|---|
| **Nano Banana 2** (this model) | Standard, fast generation from 0.5K to 4K resolution |
| **Nano Banana Pro** | Premium, higher quality, web search enabled, up to 4K |
Technical specifications
| Spec | Details |
|---|---|
| Architecture | Gemini 3.1 Flash Image |
| Resolutions | 0.5K · 1K · 2K · 4K |
| Aspect Ratios | 14 ratios including extreme (8:1, 1:8, 4:1, 1:4) |
| Add-ons | Web search · Model thinking |
| Watermarking | SynthID digital watermark |
| Output Formats | JPEG · PNG · WebP |
| License | Commercial |
Examples
- A bioluminescent treehouse hotel suspended between ancient redwood trees at twilight. Three geodesic glass pods connected by vine-wrapped rope bridges, each pod glowing turquoise from within. Orchids and phosphorescent mushrooms grow on the bark. A narrow wooden staircase spirals up the trunk. Mist drifts through the canopy.
Frequently asked questions
- What is Nano Banana 2?
- Nano Banana 2 is Google's fast image generation model with resolution tiers from 0.5K to 4K. It supports optional web search for real-time grounded generation and a thinking mode for complex prompts, making it a flexible choice for high-throughput production workflows.
- How much does Nano Banana 2 cost on Runflow?
- Nano Banana 2 starts at $0.06/image at 0.5K and $0.08/image at the standard 1K resolution. 2K is $0.12/image and 4K is $0.16/image. Optional add-ons: web search (+$0.015/image), high thinking (+$0.002/image).
- What does the web search feature do?
- When enable_web_search is true, Nano Banana 2 queries the web before generating, grounding the output in current information. Useful for generating images of recent events, news, or time-sensitive topics. Costs an additional $0.015 per image.
- What is thinking_level?
- The thinking_level parameter enables model reasoning before generation. 'minimal' uses light reasoning. 'high' uses deeper reasoning for complex prompts at +$0.002/image. Omit the parameter entirely to disable thinking.
- What aspect ratios does Nano Banana 2 support?
- Nano Banana 2 supports any aspect ratio via the aspect_ratio parameter, including extreme panoramic and vertical ratios up to 8:1 and 1:8. Set to 'auto' to let the model pick the best ratio for your prompt.
- How does Nano Banana 2 compare to Nano Banana Pro?
- Nano Banana Pro starts at $0.15/image at 1K and offers higher quality outputs, it's the premium tier. Nano Banana 2 is the faster, more cost-effective option at $0.08/image starting price. Both are on the same Runflow API.
- Can I use Nano Banana 2 commercially?
- Yes. Nano Banana 2 is available under a commercial license. You can use it in production applications, SaaS products, and client deliverables.
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- Product Isolation — Isolate the main product from a busy scene onto a clean background, using an optional text prompt to disambiguate the subject. Built for studio-grade product photography at scale.